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 6.5 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 3 (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 first-men- 
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,' 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 d, 24 2 (2 ovig.). 
Makemo, Paumotus; reef; Oct. 21, 1899; 16 ¢, 15 9° (4 ovig.). 
Xanthias canaliculatus Rathbun. 
Xanthias canaliculatus Rathbun, Bull. U.S. Fish Comm, for 1903 (1906) part 3, 856, 
text fig. 17, pl. 9, fig. 12. 
Makemo, Paumotus; reef; Oct. 21, 1899; 12,12. 
1 Bull U. S. Fish Comm. for 1903 (1906), part 3, 855, text fig. 15, pl. 9, fig. 11. 
