204 SMITHSONIAN MISCELLANEOUS COLLECTIONS 



Genus PAGURUS Fabricius 



To this genus we assign the following characters : Front without 

 any tooth or point at the middle. Ophthalmic ring exposed be- 

 tween the bases of the eyes, and bearing a bracteole. Eyes more or 

 less thick ; ophthalmic scales with broad apices. Aciculum of the 

 antennse short and stout ; flagellum long, naked. Chelipeds unequal, 

 the left largest ; hinges of the hand marginal ; fingers moving in a 

 vertical plane, and with corneous, somewhat excavated apices. 



This genus belongs to the tropical and subtropical seas of both 

 oceans. The following is a list of the species already known : 



Pagnrus pitnctulatits Oliv. Pagurus pedunculatus Yievhst. 



spinimanus M. Edw. carinatus Randall. 



aMnis M. Edw. asper De Haan 



guttatus Oliv. cavipes White. 



setifer M. Edw. venosus M. Edw. 



euopsis Dana. siuistripes Stm. 



fahimanus Dana. callidus Roux. 



scabrimanus Dana. sfriatus Latr. 



diiformis M. Edw. imbricatus M. Edw. 



asperus Berthold. strigimanus White. 



gemmatiis M. Edw. ornatus Roux. 



impressus De Haan. scufellatus M. Edw. 



316. PAGURUS ASPER' De Haan 



Pagurus asper De Haan (non Milne Edwards), Fauna Jap., Crust., 208, 

 pi. XLix, fig. 4 (1850). Dana, U. S. Expl. Exped., Crust., i, 450. 



This species, when alive, was of a slag-red or light brick-red color ; 

 eye-peduncles with a white ring around the base of the cornea, 

 which shows a reflected blue crescent at the summit in some lights. 



De Haan's P. asper was published about two years after that of 

 Milne Edwards, but we forbear to change the name, as the latter is 

 a Clibanarius. 



Our specimens were found on stony ground just above low-water 

 mark, at the island of Ousima. 



317. PAGURUS DIFFORMIS^ Milne Edwards 



Pagurus deformis Milne Edwards, An. Sci. Nat. 2d Ser., vi, 272, pi. xiii, 



fig. 4; Hist. Nat. des Crust, 11, 222. 

 Pagurus difforniis Dana, loc. cit., i, 449. 



Found at Ousima. 



^ Dardanus Iiaanii Rathbun. 



' Dardanus pcdu)iculafus (Herbst). 



