Species of Amphipodous Crustaceans. 367 



I supposed to be the tirst gnatliopod, I now, from examination 

 of the new specimens of Ampliilochus concinna^ cannot doubt 

 to be the palp of the maxilliped. Under this new light the 

 other differences between CalUmerus and Amphilochus seem 

 to lose their value, and the genus and species must be can- 

 celled. It is true that the supposed CalUmerus acucligitata 

 has the finger of the second gnathopod remarkably produced, 

 and in that respect resembles Amphilochus odontonyx of A. 

 Boeck, though it is without the spined upper antenna? of that 

 species ; but the prolonged finger may easily be a casual varia- 

 tion in an organ which undoubtedly varies in relative length 

 according to the size and age of the individual owning it. 

 The raaxilliped-]>alp of Amphilochus concinna has the last 

 articulation unguiform. In the specimen examined this arti- 

 culation was, perhaps by accident, more stumpy in one palp 

 than in the other, its companion. The three preceding articu- 

 lations are uimsually stout, those which were mistaken in the 

 supposed CalUmerus for hand and wrist being about equal in 

 length, the preceding one having a greater length, though 

 about the same thickness. 



One other remark may be added. Wlien the first gnatho- 

 pod of Amphilochus concinna is turned through a certain angle, 

 it wears almost exactly the appearance of the corresponding 

 limb figured by Messrs. Bate and Westwood for Amphilochus 

 manudens. Now Axel Boeck, in his ' Amphipoda Borealia et 

 Arctica ' (Prodromus), assigns hands identical in shape, though 

 differing in size, to both gnathopods of this species. But there 

 he differs from the founder of the species ; and as the type is 

 no longer to be found, it would be interesting to know what 

 ought in justice, or in scientific etiquette, to be done in regard 

 to the names. If we may assume, as Boeck appears to have 

 done, that tiie first gnathopod of A. manudens was seen from 

 a point of view which led to an inaccurate description of it, 

 then my species A. concinna may be pretty certainly regarded 

 as only a synonym. To Boeck's description of the nail of 

 each gnathopod as smooth and destitute of teeth and spines 

 must be added the note that this applies to the female only, 

 and not to the male. 



Podoceropsis intermedia^ n. sp. 



The first joint of the upper antennae is thick, much shorter 

 than the head ; the second joint is a good deal longer than the 

 first, but not half its thickness ; it has five long cilia on the 

 lower margin. The third joint is about the length of the 

 first. There are ten articulations to the flagellum ; the secon- 

 dary flageilum in the specimen described was but a single 



