the Trondhjem Fiord. 491 



1878. Podoceropsis intermedia, Stebbing, Ann. & Mag. Nat. Hist. ser. 5, 

 vol. ii. p. 3G7, pi. XV. figs. 3 a-f. 



Trondhjem, 5 fathoms. 



I have specimens of this species from Shetland (the type, a 

 full-grown male) ; off Cumbrae, 20-25 fathoms, taken in 

 company with Mr. D. Robertson, who has recorded this 

 species under two of the foregoing names ; and from Lofoten 

 Islands [O. 0. Bars). 



164. Podoceropsis 8ophim^ Boeck. 

 =Ncenia tuberculosa, Bate. 

 Trondhjem, 20-40 fathoms. 



165. Amphithoe ruhricata, Mont. 

 =Amphithoe littorina, Bute, = A. poduceroides, Rathke. 

 Tide-marks to 10 fathoms. 



166. Ischyrocerus anguipes^ Kroyer. 



Specimens of this species occurred, including adult males, 

 with the characteristic arched elongated hand of the second 

 gnathopods. 



167. Ischyrocerus minutus (Lilljeborg). 

 = Podocerus isopus. Walker. 



This so-called species was more abundant than the last ; 

 but I am not satisfied of its distinctness. I. anguipes attains 

 a much greater size in Spitsbergen than it does in Norway. 

 In rock-pools and shallow water in Norway, I, like Sars, have 

 found /. minutus to be abundant, and, though small, the 

 individuals are sexually mature ; but that is no proof that 

 they have attained their full growth. In the British Isles, 

 whence I have it from Shetland, Oban, Aberdeen coast, 

 and Cullercoats, Northumberland, in which places I have 

 myself found it, and also from Colwyn Bay, North Wales, 

 received as Podocerus isopus from Mr. A. O. Walker, the 

 examples are still smaller. The form of the second gnathopod 

 of the fully mature male is not materially different in the 

 two so-called species, the arched form being peculiar to that 

 age, and the number of teeth- processes on the upperside of 

 the last uropods I find in different specimens to range from 

 two to five ; and all the characteristics of the larger form 

 appear to me to be reconcilable with considerations of growth 

 and size. I should, be satisfied of their distinctness had I 

 been able to find the arched gnathopod of male in very young 



34* 



