466 PROCEEDINGS OF THE XATIOXAL MUSEUM. voi..xxni. 



The chelipeds are a little shorter than the ambulatory legs of their 

 respective sides. The carpus of the large cheliped is shaped like that 

 of P. hei'nhardus, but it is evenly set with short, sharp spines with 

 black, horny tips. The spines of the upper surface of the hand are 

 like those of the carpus, and are arranged in s(n'en more or less distinct 

 rows. The hand is more than twice as long as broad; the outer mar- 

 gin is arcuate; the inner margin is nearly straight. The prehensile 

 edges of the fingers are armed with large turbicles, and are horny near 

 the tips. 



The merus joints of both chelipeds are very smooth on their large 

 surfaces, but bordered with spines below. 



The left cheliped reaches to the base of the dactyl of the large hand. 

 It is similar in shape and armature, with the exception of the prehen- 

 sile edges of the fingers, which are much more horny. The carpus has 

 an evenly convex outer and upper surface armed with spines. 



The dactyls of the ambulatory legs are curved and bent, as in hern- 

 hardus: and allied species, but are not compressed. 



Length of the larger specimen 105 nun. ; length of right cheliped 

 68 mm. ; length of right ambulatory legs 85 mm. 



RECORD OF SPECIMENS EXAMINED. 



East coast of Patagonia, 43 fathoms, station 2768; U. S. Fish Commission steamer 

 Alhatrotis, 1888 (16772), two specimens. 



PAGURUS BARBIGER (A. Milne-Edwards). 



Bernliarduii harbiger A. Milne-Edwards, Crustacea, Mission Scientifiqiie du Cap 

 ■ Horn, Paris, 1891, p. F'28, pi. iii, fig. 1 a-e. 



The description of P. patag(mienf<i)< was published before the U. S. 

 National Museum received a copy of the above work, or a comparison 

 would have been made and the differences in part given. 



As the figures of P. harhiger were drawn ])y A. Milne-Edwards and 

 agree very well with his descriptions, they must, in the absence of the 

 type specimens, be assumed to be correct. 



The main points of difference are as follows: 



The front of P. harbiger is slightly three lobed, with the middle a 

 little in advance of the lateral lobes. The length of the eyestalk laid 

 ofl' on the front equals it in length. The carpus of the right hand is 

 nearly rectangular. The outline of the left hand is evenly arcuate 

 on both sides. The figure of the second foot shows a broad dactyle, a 

 very broad propodus arcuate beneath, the carpus is also broad, and 

 both it and the propodus are armed with teeth or spines markedly 

 different from those on the chelipeds. Notwithstanding these differ- 

 ences, it is not impossible that the species may prove to be identical, 

 as the type and only specimen of P. harhiger is very much smaller than 

 either specimen in this museum. The length of the right cheliped is 

 oiven as 23 nuu. 



