186 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Podocerus herdmani, A. 0. Walker, off Port Erin, 

 20 — 35 fathoms (washed out of Pecten maxwius and 

 P. opercularis), and Laxey Bay (for diagnosis and figure 

 see last Annual Eeport) . 



Podocerus isopus, A. 0. Walker, Khos Bay, low water, 

 abundant. 



ErictJionius difformis, M. Edw., Laxey Bay, 10 

 fathoms (colony of tubes attached to Zostera). 



Siphonoecetes colletti, Boeck, Port Erin Harbour, off 

 Garwick Head, and off Little Orme, 5 — 10 fathoms. 



Seven of these Amphipoda, iJar^wim cremdata, Amphi- 

 lochus melanops, Metopa hruzelii, Metopa pusilla, Param- 

 phithoe monocuspis, Podocerus herdmani, and Biplionoecetes 

 colletti, have not been previously recorded in British seas. 



In regard to the new species, Ampliilochus melanops, 

 Mr. Walker states : — 



" This species is interesting from being very closely 

 allied to A. marionis, Stebb., from Marion Island, from 

 which it differs chiefly in its larger eyes, and in having the 

 palm and hind margin of both gnathopods less convex. 

 From A. oculatus (Hansen), from the west coast of 

 Greenland, which it resembles in the eye, it differs in 

 having no spiniform process to the anterior margin of the 

 hand of the second gnathopod ; and from A . tenuivianus 

 (Boeck) it differs in the eye, which is described by Sars as 

 being small, imperfectly developed, and light red ; in the 

 telson, which is much shorter, and in the armature of the 

 outer plates of the maxillipedes, which are terminated by 

 a single spine, exactly as in A. marionis, instead of two 

 spines, as drawn by Sars. The mandibles have the molar 

 tubercle intermediate in character between Ampliilochus 

 and Gitanopsis, Sars, to whose Gitanopsis inermis this 

 species also has a great resemblance, but differs in the 

 above character and in the length of the telson, which 



