420 On Crustacea from, the Dogger Bank. 



than in the female ; tlie telson is in the form of an elon;^ate 

 narrow triangular plate with an acute apex ; a minute hair 

 springs from a small marginal notch on each side of the 

 apex. This is also one of the more common species of 

 Amphipods in the Firth of Forth. 



Megaluropus agilisy Norman. 



Megahiropus agilis, Norman, Ann. & Mag'. Nat. Iliet. ser. 6, vol. iii. 

 p. 446, pi. xviii. fijrs. 1-10 (1889) ; id. ibid. ser. 6, vol. iv. p. 123, 

 pi. X. figs. 15-17 (1889). 



Several specimens of this Amphipod were obtained in the 

 material from the Dogger Bank ; it appears to be generally 

 distributed round the British coasts. 



Dulichia^ sp. 



An imperfect specimen of DuUchia was obtained in the 

 Dogger-Bank material ; some of the more important append- 

 ages were absent, rendering specific identification doubtful. 



Caprella, sp. 



A few specimens of a Caprella were also obtained, but 

 they were too imperfect for the species to be satisfactorily 

 made out. 



Suborder CoPErODA. 



This suborder was represented in the Dogger-Bank 

 gathering by five species, all of which, with one exception, 

 are more or less common in the British seas. The species are 

 as follows : — Calanus finmarchicus (Gunner), one of the most 

 abundant species in the gathering ; Pseudocalanus elomjatus, 

 Bocck, frequent; Teniora longicornis (O. F. Miiller), abun- 

 dant ; jMitriJia arniaia, Boeck, rare ; and Centropages 

 humatus (Lilljeborg), frequent. 



There was another and a smaller gathering, collected on 

 the same date and near the same locality as the one now 

 described ; but the species were much fewer, and those that 

 were represented in the material did not difl^'er from those 

 already referred to. In both gatherings Sagittal were more 

 or less common, and many of them were of large size. 



