CALAPPIDAE. 67 
Front inclined at an angle of about 45°; edge quinquedentate; either 
side of the blunt median tooth, there is a small tooth, and behind it a broad 
shallow tooth. Constriction behind the orbits not sufficient, I think, to 
place the species in the subgenus Rhinolambrus. 
Hepatic region well marked. 
Antero-lateral margin of branchial region armed with six tubercles, this 
line being partially extended backward and upward on the postero-lateral 
margin by three tubercles, the last of which is the largest tubercle of the 
carapace. Posterior margin with two lines of tubercles, the terminal 
tubercle of the submarginal row being the largest. 
Chelipeds about 23 times as long as the carapace. Arm and hand mar- 
gined with irregular teeth and tubercles which are granulated or berried. 
Upper surface of arm with a row of tubercles; upper and inner surfaces of 
hand almost smooth. Outer surface of arm, wrist, and hand and inner sur- 
face of arm tuberculous. 
The slender ambulatory legs have the dactyli longer than the propodi. 
Dimensions : — Length of 9 20 mm., width 21.3 mm. 
Type locality : — Mela, Carolines; shore, seine; Feb. 16, 1900; 1 ? (Cat. 
No. 32,857, U. S. N. M.). 
This species is very near P. iippa (Lanchester)* from the Malay Penin- 
sula, but differs in the shorter propodal joints of the ambulatory legs, the 
shorter front, the small size of the postero-lateral protuberance, the presence 
of an oblique line of branchial tubercles. 
CALAPPIDAE. 
Calappa hepatica (Linnaeus), 
Calappa hepatica Alcock, 1896, 65, 142. 
Borabora, Society Islands; shore and fringing reef; Nov. 17, 1899; 1 4, 
2. 
Lifu; shore; Dec. 13, 1899; 3 ¢. 
Tari-Tari Island; shore; Jan. 6, 1900; 1 ¢. 
1 Proc. Zool. Soc. London, 1901, part 2, 537, Pl. 33, fig. 1. 
