322 



ME. C. J. A^ITH ON SOUTH-AMEEICAN CHELIFEEIN^ 



white spots; in front of the row a single hair is observed laterally, but none in the 

 middle. The last two tergites each bear two pairs of very long and slender " tactile " 

 hairs and so do the corresponding sternites. The genital area is very inconspicuous. 



Antennm. — The galea, which extends a little beyond the terminal hairs, is short and 

 slender, with a few terminal teeth. The flagellum consists of four hairs, of which the 

 longer anterior one is serrated, but with smaller teeth than in Balzan's figure 5 h (lo). 



Palps (PI. XXXI. figs. 36 a-b). — The maxilke are smooth and so are the palps, 

 except part of the anterior surface, especially of the femur and tibia. The hairs are 

 long and fairly long, stiff, and not completely slender ; the following very long and 

 slender completely simple hairs were observed, viz., three on the femur (two somewhat 

 behind the tip, the one above the other, and the third posterior and terminal), two on 

 the tibia above and below the basal elevation, and three at the base of the hand in a 

 transverse row (one more dorsally placed and two more ventral). The trochanter, which 

 is 1*5 as long as wide, is anteriorly slightly convex, and posteriorly produced into a 

 rounded, not very pronounced tubeixle ; dorsally it is prolonged into a low, rounded, 

 and slightly conical protuberance. Hha femur has a very short, well-defined stalk, 

 beyond which it is suddenly enlarged and then distinctly attenuated towards the end. 

 It is twice as long as broad ; the anterior outline beyond the stalk is rather suddenly 

 convex and then slightly concave, while the posterior, beyond the stalk, is very abruptly 

 convex and then slightly so ; dorsally the outline is first abruptly convex and then 

 almost straight. The tibia, which has a very short and well-defined stalk, is longer 

 and wider than the femur and is 1'9 as long as broad; anteriorly it is very strongly 

 convex in the middle and a trifle concave terminally, while posteriorly, beyond the not 

 very large condylus and insignificant basal elevation, it is for a short distance almost 

 straight and then distinctly convex ; the dorsal and ventral 

 outlines are moderately convex. The chela, which is 2'7 as long 

 as wide, is almost l"o broader than the trochanter is long ; the 

 hand, which is somewhat longer than, but 1-3 as wide as, the 

 tibia, is IG as long as wide, about I'l wider than deep, and 1"4 

 as long as the fingers, which are I'l as long as the hand is wide 

 and do not gape when closed ; the lateral outlines are slightly 

 convex, while the dorsal and ventral ones are almost straight. 

 No accessory teeth are observed ; anteriorly four " spots " are 

 observed between the three proximal " tactile " hairs {cf. fig. 36 a) 

 in the immovable finger, but none in the movable finger ; 

 posteriorly a similar number is observed in the immovable as 

 well as in the movable finger (cf. fig. 36 b). 



Coxos (text-fig. 83). — The second and the third pair are somewhat enlarged towards 

 the end ; the fourth pair are trapezoidal, scarcely widened out, and with the inner 

 margin somewhat longer than the concave hinder one. 



Text-fi 



Ch. nidificator Balz., 

 (5 . Coxse. X 44. 



