220 ANNALS OF SCOTTISH NATURAL HISTORY 



22. Scatophaga stercoraria, L. Twenty-six males and twenty-seven 



females. It would be difficult to say where this common 

 brightly-coloured " dung-fly " does not occur ! 



23. Scatophaga litorea, Fin. -- Twenty - five males and nineteen 



females. An abundant species round our coasts. 



24. Scatophaga squalida, Mg. A single male. This species is 



often found at the summits of high mountains. 



25. Cfflopa (? or Fucomyia) spp. Twelve males and six females 



belonging to this curious genus. As I do not yet properly 

 understand the species, I cannot here refer to the present 

 specimens with any degree of preciseness. 



26. Bkpharoptera modesta, Mg. Five specimens, identified by the 



use of Loew's Monograph, agree well with the description of 

 this species. I had not previously seen examples, and its 

 occurrence on the Flannan Islands is of much interest. 



27. Scatella sibilans, Hal. Five specimens. ) Both common 



28. Scatella stagnalis, Hal. Five specimens, j species. 



29. Drosophila graminum, Fin. -- Twenty - three specimens. A 



common and widely distributed species. 



30. Agromyza sp. A single specimen, which I am unable to 



determine. 



31. Ceratomyza denticornis, Panz. One specimen. 



32. Chromatomyia affinis, Mg. One specimen. 



33. Borborus geniculatus, Mcq. Two specimens of this easily 



recognised species. 



34. Limosina crassimana, Hal. A single male of this very distinct 



species. 



35. Ornithomyia avicularia, L. One specimen. 



ROYAL SCOTTISH MUSEUM, EDINBURGH. 



SPIDERS OF ST. KILDA. 

 By THE REV. O. PICKARD-CAMBRIDGE, M.A., F.R.S., etc. 



A SMALL collection of arachnids lately received through the 

 kindness of Mr. James Waterston of Edinburgh, by whom 

 they were collected in the island of St. Kilda early in the 

 present summer, is of some special interest, not altogether 

 from what it contains, but perhaps more from what it does 

 not contain. One would have thought that a spot so 



