14 



BULLETIN OF THE 



It has also been taken, and in great abundance, by the U. S. Fish Commis- 

 sion, oflf Martha's Vineyard and off the Capes of the Delaware, in 65 to 365 

 fathoms, and is the species which I have referred to, in Proc. National Mus., 

 Washington, III. p. 428, 1881, as " Euvagurus, sp." 



CATAPAGURUS A. M.-Edwards. 



Catapagurus A. M. -Edwards, Bull. Mus. Comp. Zocil., VIII. p. 46, 1880 (Dec. 29). 

 Hemipagurus Smith, Ann. Mag. Nat. Hist., 5th ser., VII. p. 143, Feb. 1881 ; Proc. 

 National Mus., Washington, III. p. 422, 1881. 



I have no doubt that my genus is synonymous with that of Milne-Edwards 

 as indicated above, but I am quite t;nable to tell from the description alone 

 whether one of my species is synonymous vdi\i the single species, C. Sharreri, 

 described by Milne-Edwards. C. Sharreri agrees more nearly in size with 

 H. socialis than H. gracilis, but will very likely prove to be distinct from 

 either, and until this can be determined satisfactorily, it seems best to refer 

 both my species to Catapagurus. 



The genus differs from Spiropagurus Stimpson in the form and position of 

 the sexual appendage (formed by the permanent extrusion of a portion of the 



