172 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY 



Ampelisca tennicomis, Lillje. 



The specimens taken at Valentia had the hind margin of 

 the first joint of the last peroeopods rounded and notched. 

 This may, however, be only a condition of immaturity, as 

 none were adult. 



Ampelisca spinipes, Boeck. 



The four specimens taken at St. 7 had the fourth joint of 

 the sixth peroeopods less spinous than in the typical form. 



Corophium bonellii, M. Edw. 



The male of this species is very rare, though females 

 are abundant. It was not known to Prof. G. 0. Sars 

 when he published his " Amphipoda of Norway." I have 

 taken one or two on the Welsh coast among a large 

 number of females. The most obvious differences between 

 it and C. crassicome $ are as follows : — 



G. crassicome. $ 



■1st joint with 5 or 6 

 spines on lower mar- 

 gin, the 2 proximal 

 reflex ed. 



-Last joint of peduncle 

 with a tooth on the 

 inner margin near 

 the proximal end. 



Upper antennae- 



Lower antennse- 



G. bonellii. $ 

 1st joint with 3 



spines on lower 



margin directed 



forward. 



Last joint of pe- 

 duncle without 

 a tooth on the 

 inner margin. 



