220 ANNALS OF SCOTTISH NATURAL HISTORY 



being similar in this respect to L. nasicoides, Lillj., a species, how- 

 ever, which is not only considerably smaller than L. nasicus, but has 

 the rostral projection almost truncate, instead of being decidedly 

 oblique. 



Gen. EUDORELLA, Spence Bate, 1867. 



(14) EUDORELLA EMARGINATA (Kr<Z>yer). This is the largest 

 of the two species of Eitdorella noticed here, adult female speci- 

 mens measuring nearly half an inch in length. The late Dr. 

 Robertson records it from Rothesay Bay, Bute, where it was dredged 

 in 12 fathoms, and it has been obtained on several occasions in 

 tow-net gatherings collected by the s.s. "Garland" in the deep water 

 between Arran and the coast of Ayrshire, as well as in other parts 

 of the Clyde district. This species has also been obtained in 

 gatherings of Crustacea from the Firth of Forth. 



(15) EUDORELLA TRUNCATULA, Spence Bate. I have obtained 

 this species in the Firth of Forth, in the Moray Firth, and in the 

 estuary of the Clyde ; but it appears to be less frequent than 

 Eudorella emarginata. It is also scarcely half the size of that 

 species. 



Gen. EUDORELLOPSIS, G. O. Sars, 1882. 



(16) EUDORELLOPSIS DEFORMIS (Krq>yer). This curious little 

 Cumacean was first observed in the Firth of Forth, during 1889-90, 

 and is recorded in the " Eighth Annual Report of the Fishery Board 

 for Scotland," part iii. p. 329 (1890). Since that time the species 

 has been obtained in gatherings collected off Aberdeen, in the 

 Moray Firth, and in the Firth of Clyde. Though apparently 

 extensively distributed, it seems to be a rare species, as seldom more 

 than one or two specimens are obtained in any single gathering. 



Fam. VI. DIASTYLID.*;. 



Gen. DIASTYLIS, Say., 1818. 



(17) DIASTYLIS RATHKEI (Krq>yer). This appears to be the 

 largest of the British species of Diastylis, some of the specimens in 

 my collection measuring about 15 millimetres in length. It has 

 been obtained in the Firth of Forth, in the Moray Firth, and at 

 Tarbert, Loch Fyne. 



(18) DIASTYLIS RUGOSA, G. O. Sars. This seems to be more 

 widely distributed than the last. I obtained it in East Loch 

 Tarbert in 1886. The late Dr. Robertson records it from Loch 

 Ranza and Blackwaterfoot, Arran, and it has been captured in 

 Loch Etive, the Firth of Forth, and one or two other places, but 

 nowhere very plentifully. 



