PILUMNIDAE. 45 



base in larger chela, color almost black, with tips lighter, color prolonged 

 very little on the palm and terminating in an oblique line. Legs hairy ; 

 merus joints spinulous above. 



Dimensions: — <? type, length G.5 mm., width 9.7 mm., fronto-orbital 

 width 5.7 mm. 



Distribution: — Papeete, Tahiti ; shore; Nov. 9, 1899; 4 immature. 



Ponape, Carolines; reef; Feb. 11, 1900; 2 S (1 $ is type, Cat. No. 

 32,850, U. S. N. M.). 



The young specimens from Papeete show much rougher carapace and 

 chelipeds than the adult, the roughness diminishing regularly with age. 

 They measure respectively 6.4, 5.5, 5.2, and 5 mm. in width. The firstHnen- 

 tioned has the larger palm smooth outside, a little granulous above, smaller 

 cheliped missing ; No. 2 has the larger palm also smooth outside, but more 

 granulous above, the smaller palm distinctly granulous outside and above ; 

 No. 3 has the larger palm a little rough outside as well as above, the smaller 

 palm very granulous; in No. 4 both palms are very rough, the smaller the 

 rougher. One would not believe the smallest specimen to be the same 

 species as the type, were there not intermediate stages. 



This species is near X. flavescens Rathbun, 1 from the Hawaiian Ids., but 

 the latter is wider and more areolated, the dark color of the pollex runs far 

 back and up on the palm, and the legs are nearly naked. 



Xanthias notatus (Dana). 



Xanthodes notatus Alcock, 1898, 67, 158. 



Fakarava Id., Paumotus; outer reef; Oct. 12, 1899; 19 <?, 24 9 (2 ovig.). 

 Makemo, Paumotus; reef; Oct. 21, 1899; 1G S, 13 ? (4 ovig.). 



Xanthias canaliculars Eathbun. 



Xanthias canaliculus Eathbun, Bull. U. S. Fish Comm. for 1903 (1906) part 3, 850, 

 text fig. 17, pi. 9, fig. 12. 



Makemo, Paumotus; reef; Oct. 21, 1899; 1 6*, 1 <?. 



1 Bull U. S. Fish Comm. for 1903 (1906), part 3, 855, text fig. 15, pi. 9, fig. 11. 



