CRUSTACEA NORTH PACIFIC EXPLORING EXPEDITION 207 



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

 be distinguished by its equal hands and broad. Rat sternum. 

 It was found at Loo Choo. 



Genus AXICULUS Dana 



Front acute at the middle. Ophthalmic ring barely exposed, 

 but protected by a bracteole-. Antennae slender; aciculum short, 

 robust ; flagellum naked. Chelipeds 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 only in the Pacific and neighboring seas, and 

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

 are A. fypiciis Dana (Pagiinis aiiiciiliis Fabr.), A. itrsiis (Pagurns 

 ursus Oliv. ), and A. clcgaiis Stm. 



322. ANICULUS TYPICUS ' Dana. 



Pagunis aniciilits Fabricius, Suppl., 411. Milne Edwards, Hist. Nat. des 



Crust., II, 230. De Haan, Fauna Jap., Cr., 209. 

 Aniculus typicus Dana, U. S. Expl. Exped., Crust., i, 461, pi. xxix, 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 CALCINUS Dana 



Front acute at the middle. Ophthalmic ring concealed. Acicu- 

 lum of the antennas short ; flagellum naked. Chelipeds unequal, the 

 left larger; commissure of the hand vertical, but with its hinges 

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

 cavated calcareous apices. Dactyli of the second and third pairs of 

 feet short. 



Its geographical range is in the tropical parts of both oceans. 

 The following is a list of the species : 



■Calcinus tihiccn (Herbst) Dana. Calcinus gaimardii (M. Edw.) Dana. 

 chilensis (M. Edw.). elegans (M. Edw.) Dana. 



obscuriis Stm. latens (Randall) Dana. 



lividiis (M. Edw.). cristimanus (M. Edw.). 



stilcatus (M. Edw.). 



\-liiiciilus aniculus (Fabricius). 



