224 MR. C. J. WITH ON SOUTH-AMEKICAN CHELIFEEIN^ 



Colour. — The palps are reddish brown ; the body is darker brown, with almost black 

 lateral keels. 



Measurements. — Cephalothorax 1 10 (0'920); abdomen 2'19 (1"38) mm. 



Palps: trochanter 0-736 (0-322); femur 2-162 (0-253); tibia 2-070(0-263); hand 

 1-541 (0-368), depth 0-370 ; finger 1-035 mm. 



Leg I.: femur 0-70 (0-190), trochantia 0-130 (0-213); tibia 0-486 (0-129); tarsus 

 0-38^ (0-099) mm. 



Leg IV.: femur 0-930 (0-334); tibia 0-699 (0-167); tarsus 0-471 (0-106) mm. 



Female. 



Cephalotliorax. — The transverse grooves, especially the posterior, are less distinctly 

 marked. 



Abdomen. — The abdomen is less depressed ; the second to the tenth tergites with 

 distinct longitudinal line and the first and last tergites with trace of one. Tergal longi- 

 tiidinal keels are wanting. Number of hairs is somewhat greater ; in the hindmost 

 marginal row, for instance, 14-16 are found. 



Antennce. — The terminal hair extends scarcely beyond the galea, which terminally 

 bear about four short teeth. 



Palps (PL XXIX. hgs. 1 g-h). — The maxillce are only distinctly granular laterally. 

 The trochanter, which has a rather short, but well-defined stalk, is only 1-7 as 

 long as wide, and 1-3 as long as chela is wide ; anterior outline is slightly convex, 

 while the posterior, beyond the stalk, is rather suddenly produced into a conical 

 tubercle somewhat dorsally placed. The femur is only 5-8 as long as wide and is less 

 widened out towards the extremity. The tibia is almost as in the male, but only 4-J5 

 as long as wide. The chela is 4-4 as long as wide ; the hand is only 2 6 as long as 

 wide, but 1-4 longer than the finger; the fingers (fig. 1 h) gape slightly when closed 

 and are provided with marginal teeth from base to tip. The number of " spots " is 

 almost the same as in the male, but they are somewhat smaller anteriorly ; the 

 immovable finger has posteriorly about five " spots," arranged between two basal and 

 the median tactile hairs, and the movable has about ten " spots " arranged in a longi- 

 tudinal area between and beneath the tactile hairs {cf. fig. 1 h). 



Coxce (PI. XXIX. fig. 1 i). — As regards the difference from the male, I refer to 

 fig. 1 i. 



Legs. — The claws of the first pair of legs possess large anterior teeth. The tibia of 

 the first pair of legs is only 1-2 as long as the tarsus, which gradually tapers towards 

 the end, where no dorsal conical process is found, and attains a length 4-5 times its 

 depth. The femur of the fourth pair is three times as long as deep and 1-6 lower than 

 tarsus is long. 



Colour. — The palps and, more markedly, the body somewhat lighter. 



