MARINE BIOLOGICAL STATION AT PORT ERIN. 35 



Dexamijie thea, Boeck, from Port Erin harbour (common), 

 Hoplonyx similis, Sars (new to Britain), Megamphopus 

 cormctus, Norman, and a new species of Podocerus, from 

 Laxey Bay, for which the following name and diagnosis 

 are proposed by Mr. Walker : — 

 " Podocerus herdmani, n. sp. 



''Allied to P. falcat us Ssiid P. miniUus, G. 0. Sars, 

 but differing in the 'hand' of the second gnathopod 

 of the male, as shown in annexed figures 12 and 13. 



Fig. 12. Podocerus minutus Fig. 13. 



(after G. 0. Sars.) Podocerus herdmani, u. sp. 



The large tooth which in these species springs from 



the base of the hind margin, in this species is much 



shorter and rises from nearly the centre. There is 



also a prominent tooth near the centre of the hind 



margin of the 'finger' which is very characteristic. 



The female resembles P. minutus. Length 3 mm." 



In regard to Megamphopus cornutus, Mr. Walker 



reports to me " Canon A. M. Norman, in lit. Dec. 6/92 



gives Protomedeia longi7iiana, Boeck 1870, and Podoceropsis 



intermedia, Stebbing 1878, as synonyms of Megamphopus 



cornutus, Norman, 1868. At the same time he sent me 



his type specimen, also one from Farland Point, Cumbrae, 



and one from G. 0. Sars labelled Protomedeia longimaria, 



from the Lofoten Islands. Of these the last has the 



' horn ' on the 1st epimere by far the longest as it reaches 



to the end of the 3rd (apparent 1st) joint of the lower 



