84 ANNALS OF SCOTTISH NATURAL HISTORY 



not hitherto reported from the locality. Most of the species 

 represented are common, and generally, or at any rate, widely 

 distributed in Britain, and the examples in the collection 

 present no peculiarities, so far as I can see. Perhaps the 

 most noteworthy species in the list is Ixodes borealis, Kram. 

 and Neum., a tick, parasitic on sea-birds, which, so far 

 as I know, has not before been recorded from Scotland, and 

 only once from England. 



OLIGOCH/ETA. 



Liimbricus rubellus, Hoffm. An earthworm in the collection is 

 referred by Mr. Beddard to this common and widely distributed 

 species. 



CRUSTACEA. 



Three terrestrial Isopods, all common British species, are repre- 

 sented, namely : 



Trichoniscus pusilluS) Brandt. One specimen. 



Philoscia muscorum (Scop.). Several. 



PorceHio scaber, Latr. Several. 



There are also examples of two Amphipods obtained, Mr. 

 Waterston tells me, in the " Glen " burn some distance above its 

 junction with the sea, namely : 



Gammarus duebeni, Lillj. Three. 



Orchestia littorea (Mont.) Two of each sex. The former is a 

 brackish-water form recorded from both sides of Scotland, and 

 perhaps takes the place of G. pulex in St. Kilda. The Orchestia is 

 a common " hopper " on our shores at about high-water mark. 



ARACHNIDA. 

 Order ACARIDEA. 



The Mites represented are : 



Trombidiittn holosericeurn (Herm.) Two specimens. 



Rhyncolopkus regalis, Berl. One. Agrees well with specimens 

 from sand-hills, Fife, named for me last summer by Dr. Michael. 

 I have also found it at a considerable elevation on the Perthshire 

 hills near Killin. 



Ca'yptostoma hardii, Cambr. I was delighted to find a specimen 

 of this curious mite in the collection. Originally recorded from the 

 Cheviot Hills, it has since been found by me high up on Am 

 Binnein, West Perthshire (cf. "Annals," 1904, p. 249). 



Hcsmogamasiis hirsutiis, Berl. ? Three Gamasids from the Field- 

 mouse of St. Kilda are so very like H. hirsutus of moles' nests that 

 they must be either the same species or a very closely allied one. 



