64 MR. C. J. WITH ON SOME NEW SPECIES OF 



deep, somewhat conical and rounded tubercle, so that the posterior surface 

 becomes fairly distinctly bigibbose ; the trochanter is somewhat deeper than 

 wide, but not so deep as the femur. The fetnur, which has a short, fairly 

 well-defined stalk (beyond which it is distinctly attenuated), is 2'2 as long as 

 wide ; the interior outline is slightly convex and then concave, while the 

 posterior is abruptly convex and then straight. The tibia, which has a 

 moderately long and well-marked stalk, is somewhat longer but distinctly 

 wider than the femur and is scarcely twice as long as broad ; anteriorly it i s 

 distinctly convex and posteriorly beyond well-marked basal elevation is first a 

 trifle concave and then distinctly convex. The chela, which is almost 2*8 as 

 long as wide, is about 1"1 as broad as the trochanter is long ; the liand, which 

 is somewhat longer and 1*2 as wide as the tibia, is 1'7 as long as wide, 1*5 as 

 long as deep, almost I'l deeper than wide, and about 1'5 as long as the finger, 

 which is about as long as hand is deep ; the outlines of the hand are straight 

 or slightly convex. Anteriorly the immovable finger has eight "spots,^' 

 arranged as shown in fig. 19 ; posteriorly both fingers seem to bear a few 

 spots. 



Co.av. — The fourth pair, which have the inner margin much longer than 

 the hinder, appear triangular, as the angle between the two margins is very 

 obtuse. 



Legs. — Rather short and stiff, with pointed and almost simple hairs ; femur 

 has dorsally a terminal slender, completely simple hair on the fourth pair ; the 

 dorsal " tactile " hair is about as long as the tarsus and basal. The legs are 

 rather short and clumsy ; the trochantin of the first pair has a very wide 

 articular cavity. The tibia of the first pair is 1'3 as long as the tai'sus, which 

 is almost 4 as long as deep ; the femur of the fourth pair of legs is 2'3 as long 

 as deep, 1"2 as long as the tibia, and 1"3 lower than tarsus is long. 



Colour. — Palps dark reddish brown, while the cephalothorax and tergal 

 sclerites are pale brown. 



Measurements. — Cephalothorax 0*759 (0*647); abdomen 3*11 (1*27) mm. 



Palps : trochanter 0*355 (0*230) ; femur 0*621 (0*280) ; tibia 0*647 (0*335) ; 

 hand 0*713 (0-414), depth 0*450) ; finger 0*460 mm. 



Leg I. : femur 0*433 (0*155), trochantin 0*083 (0*175) ; tibia 0*357i(0*106) ; 

 tarsus 0*274 (0*071) mm. 



Leg IV. : femur 0*608 (0*270) ; tibia 0*509 (0*154) ; tarsus 0*342 (0*095) 

 mm. 



Material. — A single female was examined from the north coast of Christmas 

 Island. 



Remarks. — Pocock has identified this species with Cli. javanus, Thorell, 

 but he was wrong, as the trochanter is distinctly bigibbose in Ch. Pococki, 

 sp. n., but scarcely so in the other species. This species is distinguished from 

 Ch. navigator. With, and Ch. indicus, With, to which it shows similarity by 

 the absence of grooves on the cephalothorax and by the hand, which is 1*5 as 



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