A. E.  Stubbs, ?Advances in the understanding of the Platycheirus scutans (Meigen) complex in Britain, including the addition of Platycheirus aurolateralis sp. n. (Diptera: Syrphidae).?, Dipterists Dig. (2nd Ser.), vol. 9, pp. 75-80, 2002.

G. E.  Rotherhay, ?Platycheirus splendens sp.n. from Britain formerly confused with Platycheirus scutatus (Diptera: Syrphidae).?, Entomologist's Gazette, vol. 49, pp. 271-276, 1998.

P.  Goeldlin de Tiefenau, Maibach, A., and Speight, M. C. D., ?Sur quelques especes de Platycheirus  (Diptera,  Syrphidae)  nouvelles  ou  meconnues. ?, Dipterists Dig. (Ist Ser.), vol. 5, pp. 19-44, 1990.

M. C. D.  Speight and Goeldlin de Tiefenau, P., ?Keys to distinguish Platycheirus angustipes, P. europaeus, P. occultus and P. ramsarensis  (Dipt.,  Syrphidae) from other clypeatus group species known in Europe?, Dipterists Dig. (Ist Ser.), no. 5, pp. 5-18, 1990.

I.  MacGowan, Gilbert, F. S., and Rotherhay, G. E., ?The status of Melanostoma dubium (Diptera, Syrphidae).?, Dipterists Dig. (2nd Ser.), vol. 3, pp. 79-87, 1977.

E. G.  Hancock, Robinson, J., and Corbet, G. B., ?Additions to the list of Myriapoda from St Kilda?, Glasgow Naturalist, vol. 25, no. 1, pp. 92-93, 2008.

M.  Ida, ?Revision of the European species of the genus Hadrodactylus Förster (Hymenoptera: Ichneumonidae). Part 1 ?, Insect Systematics & Evolution, vol. 10, no. 4, pp. 303 ? 313, 1979.

A. R.  Waterston, ?Hymenoptera?, Proc. Roy. Phys. Soc. Edinb., vol. 22, pp. 283-284, 1936.

J.  Bowler, Sears, J., and Hunter, J., ?Recent research on the northern Colletes mining bee  Colletes floralis  Eversmann?, The  Glasgow  Naturalist  , vol. 25, pp. 43-49, 2009.

A.  Wright, ?British Sawflies (Hymenoptera: Symphyta) a key to the adults of the genera occurring in Britain?, Field Studies, vol. 7, no. 3, pp. 531-593, 1990.

E.  Hewett, ?Observations on the ova and larvae of Netelia vinulae (N. cephalotes Holmgren) (lchneumonidae: Tryphoninae), a gregarious ectoparasitoid of the Puss moth caterpillar, Cerura vinula ?, Bulletin of the Amateur Entomologists' Society., vol. 57, 1996.

K. P.  Bland, ?Some leaf-mining Diptera from North Uist, Outer Hebrides?, Glasgow Naturalist, vol. 22, no. 4, pp. 385-387, 1994.

N.  Redpath, Osgathorpe, L. M., Park, K., and Goulson, D., ?Crofting and bumblebee conservation: The impact of land management practices on bumblebee populations in northwest Scotland?, Biological Conservation , vol. 143, pp. 492-500, 2010.

S. M.  Smith, ?Mollusca of rocky shores: Lewis and Harris, Outer Hebrides?, Proc. R. Soc. Edinburgh. Sect. B. Biol. Sci., vol. 77, pp. 173?187, 1979.

C. F.  Summers and Harwood, J., ?The Grey seal ?problem? in the Outer Hebrides?, Proc. R. Soc. Edinburgh. Sect. B. Biol. Sci., vol. 77, pp. 495?503, 2011.

J. W.  Treasurer and Mills, D. H., ?An Annotated Bibliography of Research on Coarse and Salmonid Fish (Excluding Salmon and Trout) found in Fresh Water in Scotland?, Freshw. Forum. J. Freshw. Biol. Assoc., vol. 3, 1993.

H.  Warwick, Morris, P., and Walker, D., ?Survival and weight changes of hedgehogs (Erinaceus europaeus) translocated from the Hebrides to Mainland Scotland?, Lutra, vol. 49, pp. 89?102, 2006.

T.  Warwick, ?Field Mice (Apodemus) from the Outer Hebrides, Scotland?, J. Mammalology, vol. 21, pp. 347?351, 1940.

T.  Warwick, ?Notes on the mammals of Barra, Mingulay and Berneray, Outer Hebrides?, Scottish Nat., vol. (1938), pp. 57?59, 1938.

J.  Waters, Darvill, B., Lye, G. C., and Goulson, D., ?Niche differentiation of a cryptic bumblebee complex in the Western Isles of Scotland?, Insect Conserv. Divers., vol. 4, pp. 46?52, 2011.

A. R.  Waterston, ?Present knowledge of the non-marine invertebrate fauna of the Outer Hebrides?, Proc. R. Soc. Edinburgh, vol. 79B, pp. 215?321, 1981.

A. R.  Waterston, Holden, A. V., Campbell, R. N., and Maitland, P. S., ?The inland waters of the Outer Hebrides?, Proc. R. Soc. Edinburgh. Sect. B. Biol. Sci., vol. 77, pp. 329-351, 1979.

A. R.  Waterston and Lyster, I. H. J., ?The macrofauna of brackish and fresh waters of the Loch Druidibeg National Nature Reserve and its neighbourhood, South Uist?, Proc. R. Soc. Edinburgh. Sect. B. Biol. Sci., vol. 77, pp. 353?376, 2011.

R. C.  Welch, ?Survey of the invertebrate fauna of sand dune and machair sites in the Outer Hebrides during 1976?, Proc. R. Soc. Edinburgh. Sect. B. Biol. Sci., vol. 77, pp. 395?404, 2011.

A.  Wheeler, ?A list of the common and scientific names of fishes of the British Isles?, J. Fish Biol., vol. 41(suppl.A, pp. 1?37, 1991.

P. J. P.  Whitehead, ?FAO Species Catalogue. Vol. 7. Clupeoid fishes of the world (suborder Clupeioidei). An annotated and illustrated catalogue of the herrings, sardines, pilchards, sprats, shads, anchovies and wolf-herrings?, FAO Fish. Synop., vol. 125, pp. 1?303, 1985.

P. F.  Whitehead, ?The Coleoptera of the Scottish Outer Hebridean machair ? success , failure, life, death and evolution in an exposed terrestrial environment?, Entomol. Gazetta, vol. 65, pp. 37?61, 2014.

R.  Wright, ?Beginners Guide: Silphidae (Part 2)?, Beetle News, vol. 1:3, pp. 5?9, 2009.

D. B.  Jackson, Fuller, R. J., and Campbell, S. T., ?Long-term population changes among breeding shorebirds in the Outer Hebrides, Scotland, in relation to introduced hedgehogs (Erinaceus europaeus)?, Biol. Conserv., vol. 17, pp. 151?166, 2004.

D. B.  Jackson and Green, R. E., ?The importance of the introduced hedgehog (Erinaceus europaeus) as a predator of the eggs of waders (Charadrii) on machair in South Uist, Scotland?, Biol. Conserv., vol. 93, pp. 333-348, 2000.

H. D.  Jones, ?Identification British land flatworms?, Br. Wildl., no. February, pp. 189-194, 2005.

P.  Maitland, ?The fish fauna of the inland waters of the Outer Hebrides?, Hebrid. Nat., vol. 4, pp. 36?45, 1980.

A.  McCullough, Wakeham-Dawson, A., and Parker, M. J., ?A provisional checklist of the hoverflies (Diptera, Syrphidae) of the islands of North Uist, South Uist, Benbecula, Eriskay and Berneray in the Outer Hebrides?, Dipterists Dig. (2nd Ser.), vol. 9, pp. 95?102, 2002.

W.  Ritchie, ?Machair development and chronology in the Uists and adjacent islands?, Proc. R. Soc. Edinburgh. Sect. B. Biol. Sci., vol. 77, pp. 107?122, 2011.

S. S.  Roy, Chauvenet, A. L. M., and Robertson, P. A., ?Removal of American mink (Neovison vison) from the Uists, Outer Hebrides, Scotland?, Biol. Invasions, vol. 17, pp. 2811?2820, 2015.

L.  Davies, ?The Distribution in Scotland and Ireland of Calliphora uralensis and Its Occurrence with and Separation from C. vicina (Insecta: Diptera)?, Irish Nat. J., vol. 22, pp. 241?244, 1987.

C.  Elton, ?Metazoan Parasites from Mice in the Isle of Lewis, Outer Hebrides?, Parasitology, vol. 26, p. 107, 1934.

J. H.  Fraser, ?The Distribution of Medusae in the Scottish Area?, Proc. R. Soc. Edinburgh. Sect. B. Biol., vol. 74, pp. 1?25, 1974.

J. D.  George, ?The polychaetes of Lewis and Harris with notes on other marine invertebrates?, Proc. R. Soc. Edinburgh. Sect. B. Biol. Sci., vol. 77, pp. 189?216, 2011.

R.  Hewson, ?The mountain hare in the scottish islands?, Scottish Nat., vol. 67, pp. 53?54, 1955.

A. M.  Hora, ?Notes on Mites collected from the Isle of Lewis, Outer Hebrides?, Parasitology, vol. 26, p. 361, 1934.

D. B.  Jackson, ?The breeding biology of introduced hedgehogs (Erinaceus europaeus) on a Scottish Island: lessons for population control and bird conservation?, J. Zool., vol. 268, pp. 303?314, 2006.

S.  Angus, ?The macrofauna of intertidal sand in the Outer Hebrides?, Proc. R. Soc. Edinburgh. Sect. B. Biol. Sci., vol. 77, pp. 155?171, 1979.

S.  Angus and Hopkins, P., ?Rattus rattus confirmed in the Shiant Isles, Outer Hebrides?, Scottish Nat., vol. 109, pp. 33?38, 1997.

R. S.  Bailey, Hislop, J. R. G., and Mason, J., ?The fish and shellfish resources in seas adjacent to the Outer Hebrides?, Proc. R. Soc. Edinburgh. Sect. B. Biol. Sci., vol. 77, pp. 479?494, 1979.

R. J.  Berry, ?The Outer Hebrides: where genes and geography meet?, Proc. R. Soc. Edinburgh. Sect. B. Biol. Sci., vol. 77, pp. 21?43, 1977.

J. Morton Boyd, ?The natural environment of the Outer Hebrides?, Proc. R. Soc. Edinburgh. Sect. B. Biol. Sci., vol. 77, pp. 3?19, 1979.

J. H.  Bratton, ?Miscellaneous invertebrates recorded from the Outer Hebrides , 2010?, Glas. Nat., vol. 25, pp. 5?6, 2012.

R. N.  Campbell, ?Sticklebacks (Gasterosteus aculeatus L.) in the Outer Hebrides?, Hebrid. Nat., vol. 3, pp. 8?15, 1979.

R. N.  Campbell and Williamson, R. B., ?The fishes of inland waters in the Outer Hebrides?, Proc. R. Soc. Edinburgh. Sect. B. Biol. Sci., vol. 77, pp. 377?393, 2011.