GAM MAUI D-K. 1 O.'J 



expaiiilocl. rieopoda biramous ; external rami of the last two 

 paii-s shortt-r than the inner ones. Telson lameUiform, subqua- 

 (hati>. Colour very variable, {generally dark reddish or brown, 

 variep;ated and mottled with white. Some specimens were of a 

 uniform deep purjilo, others pure white. Eyes yellowish or ver- 

 milion-coloured, "with a black dot in the middle. 

 " Length ^ an inch. 



" This is one of the most curious and by far the finest species taken. 

 It occurred only once, but then in considerable numbers, in ten 

 fatlioms. on a sandy bottom, inside of Duck Island Ledge. 



'* In its very hard pereion * and large strong coxae, it possesses great 

 security ; and, when disturbed, it rolls itself up and remains quiescent, 

 ;i.s if feigning death : most other Amphipods will, on the contrary, 

 endeavour to escape when molested. When in motion, this animal 

 ])reseiTes an erect posture, like the Isopods, with the pleon bent 

 luiderneath. It seldom swims, but makes powerful leaps by means 

 of its well-developed pleopoda.'' — Stimpson. 



This species differs from A. Edwardsli in ha\ing the telson 

 resembling Acunihosoma ; but this is a character that Costa has not 

 given ; and as I have not seen the t}'pe of the genus, I cannot take 

 upon myself the responsibility of expeUing Stimpson's species, 

 though A. caiaphractas can scarcely belong to the same genus lis 

 A. Edwardsii. 



4. AmpMthonotus acanthophthalinus. 



Aniphithonotus acanthnphtlmlmus, A. Costa, Cat. dei Crost. Ital. per 

 Fr. Guyl. Hope, p. 45, 1851. 



" lleserables Dexamlne sphiosaf, from which it differs principally 

 in hanng a short- spine situated on each side of the eephalon ante- 

 riorly to the eyes. Basos of the posterior pair of pereiopoda not verj' 

 broad. 



" Length 4| lines. 



•* Hab. Neapolitan Sea, during the month of February. In Costa's 

 private collection." — Costa. 



44. EPIMERIA. 



Epimeiia, A. Costa, Cat. dei Crost. Ital. per Fr. Gtujl. ILtpe, p. 46. 



"This genus is closely allied to Amphithoe and Amphithonotux. 

 Coxae of the first and second pairs of pereiojjoda longj, the rest 

 considerably broadci-§, forming together a shield, often inferiorly 

 emarginate. Back as in ylnqiliit/ionottis.'" — Costa. 



Amph'dho(:\ix\B well-marked characters that \videly separate it from 

 either of the animals that Costa intended to embrace within his 

 genus Aniphit/ionotiis, and no less so from llu' present descriplion of 



"i-araj)ax." — Aurf. fat. t •■ Amjifi. Marion i.-i," Aut-l. text. 



§ " inajoribus." — Attct. text. 



