CRUSTACEA NORTH PACITIC EXPLORING EXPEDITIOX 20/ 



described by Dana, from the eastern seas. From both these it may 

 be distinguished by its equal hands and broad, flat sternum. 

 It was found at Loo Choo. 



Genus AXICL'LL'S Dana 



Front acute at the middle. Ophthalmic ring barely exposed, 

 but protected by a bracteolc. Antennae slender; aciculum short, 

 robust ; flagellum naked. Chelipcds very short, equal ; commissure 

 of the hand vertical, but with the hinges marginal ; fingers moving 

 in a vertical plane, with excavated corneous tips. 



This genus is found onl}- in the Pacific and neighljoring seas, and 

 is restricted to the torrid and warm-temperate zones. The species 

 are A. typiciis Dana (Pagiints aiiiciilits Fabr.), A. ursns (Pagiinis 

 ursKS Oliv. ), and A. clcgaiis Stm. 



322. ANICULUS TYPICUS = Dana. 



Pagurus aniculus Fabricius, Suppl,, 411. Milne Ed\v.\rds, Hist. Nat. des 



Crust., II, 230. De H.\.\n, Fauna Jap., Cr., 209. 

 Aniculus tyl^icus Dax.\, U. S. Expl. E.xpcd.. Crust., i, 461, pi. xxi.x, fig. I. 



In our specimen the rostrum is much less acute than in those de- 

 scribed by Dana. It was taken at Simoda. Japan. 



Genus CA IX I XL'S Dana 



Front acute at the middle. ( )p]u]ialmic ring concealed. .Vcicu- 

 lum of the antenn?e short; flagellum nakeil. Chelipeds unequal, the 

 left larger; commissure of the hand vertical. l)ut with its hinges 

 almost marginal ; fingers moving in a vertical plane, and with ex- 

 cavated calcareous apices. Daclyli nf the second and iliird ])airs of 

 feet short. 



Its geographical range is in the ii-opical parts of both oceans. 

 The following is a list of the species : 



Calciiuts tihiccn Hlcrbst) Dana. Cahiniis guiiitardii CM. Edw.) Dana. 

 citilcusis (M. Edw.). clcgaiis (M. Edw.) Dana. 



obsciints Stm. /(//r»ij ( Randall) Dana. 



Hvidus (M. Edw.). iristiiiuiiius ( M. Edw.). 



sulcalns (M. Edw.). 



' .litiiulus aiiictilus ( I-"al)ricius ). 



