260 THE SCOTTISH NATURALIST 



The Vertebrates, however, are not the subject of the 

 present paper, the object of which is to give a list of 

 the Terrestrial Invertebrates I have met with on the 

 Bass, or have had sent to me therefrom. My visits 

 only occasional and of short duration at the best have 

 necessarily ceased since the outbreak of war in 19 14, 

 otherwise a longer list would probably have been available. 

 For examples of Moths and other insects captured at the 

 lighthouse lantern during the period 1907 to 1914, I was 

 indebted to the late J. M. Campbell, and I have now to thank 

 his successor in charge of the lighthouse, Mr John Muir, 

 for a number of flies, beetles, etc., kindly collected for me 

 on the Rock* this year. Apart from the interest attaching 

 to the locality, the records as a whole have no special 

 significance. For the most part the species are such as 

 occur commonly on the adjacent mainland, the nearest 

 point of which is only a mile and a quarter distant. Winged 

 insect visitors can thus be counted on greatly to swell the 

 list if only there were someone to watch for and collect 

 them. The thorough examination of a number of Gannets' 

 nests would no doubt add considerably to the list of 

 beetles, and yield also some mites, etc. ; but it requires 

 no little courage to tackle such foul material, and I have 

 only once attempted it. The parasites of the birds fre- 

 quenting the Rock scarcely come within the scope of this 

 paper. 1 



Among the present records attention may be drawn to 

 the occurrence of the ant Tetrdmorium ccespitum, and of the 

 moth Calamia lutosa, both apparently very rare in Scotland. 

 The occurrence of the fine bee Bombus lapponicus, and of 

 the moths Dasypolia templi, Lita obsoletella, .and Coleophora 

 solitariclla are also worthy of notice. The last two were 

 certainly at home, but the number of Lepidoptera and 

 other insects permanently inhabiting the island is probably 

 small. To Mr P. H. Grimshaw I am indebted for assistance 

 in the determination of the Diptera. 



1 In June 1900, as recorded in my paper on "Forth" Mallophaga, 

 1912, I got specimens of Lipenrus {Pectinopygus) hassance, Denny, on 

 a Gannet from the Bass. 



