284 ME. C. J. WITH ON SOUTH-AMEEICAN CHELIFEEIN^ 



but the second pair show traces of a basal narrowing, while the fourth pair are 

 trapezoidal and of almost equal width throughout, with the inner margin much 

 shorter and fairly well separated from the hinder one. 



Legs. — The proximal joints are almost smooth. Dorsally the fairly long hairs are 

 obtuse or dentated, ventrally pointed, and almost or completely simple. The tarsus 

 of the fourth pair of legs possesses a " tactile " hair two-thirds removed from the base, 

 and behind that, and removed one-third from the base, another large articular 

 cavity ; in the specimen examined no terminal " tactile " hair was observed at the 

 tip of the femur and tibia as in Ch. celerrimus, sp. n. [cf. figs. 23 d-e). The legs are 

 long and slender, and the trochantin of the first pair is much deeper than the femur 

 proper, while its tarsus, which is 4'6 as long as deep, is I'l longer than the tibia; 

 thefemiir of the fourth pair of legs is 2*8 as long as deep, 1*2 as long as tibia, and 

 2 lower than tarsus is long. 



Colour. — The palps and the cephalothorax yellowish brown, the latter the lighter, 

 with the chela more reddish brown. The abdomen is very pale, almost white. 



Measiiremenfs. — Cephalothorax 0'759 (0-690) ; abdomen 1-610 (0-897) mm. 



Palps : trochanter 0-345 (0-230) ; femur 0-647 (0-265) ; tibia 0-667 (0-299) ; hand 

 0-667 (0-414). depth 0-391 ; finger 0-575 mm. 



Leg I. : femur 0-418 (0-129), trochantin 0-091 (0-144) ; tibia 0-312 (0-091) ; 

 tarsus 0-342 (0-073) mm. 



Leg IV.: femur 0-570 (0-205); tibia 0-464 (0-125) ; tarsus 0-410 (0-088) mm. 



Material &c. — Of this species I have examined a single male from Rio Janeiro, 

 collected by the Danish ' Galathea ' Expedition ; it has previously been recorded 

 from Tierra del Fuego and Patagonia. 



Memarks. — The specimen examined differs from Ellingsen's description (Simon's 

 descri]Dtion of the typical specimens was not at my disposal) in mere trivialities, viz., 

 ocular spots fairly distinct instead of wanting, second transverse groove convex instead 

 of straight, better-marked granulations, and comparatively longer femur, and con- 

 sequently it is most naturally referred to the same species. This species bears in the 

 structure of the legs, &c., great similarity to Ch. celerrimus, sp. n., but is easily 

 distinguished by the femur, which is scarcely attenuated. 



32. Chblifer bkevifemoratus Balz. 



1890. Balzan, (lo) pp. 420-121, tav. xiv. figs. 7-7 c. 



1891. Balzan, (ii) p. 548. 



1902. EUingsen, (15) pp. 156-158. 

 1905. EUingsen, (19) p. 324. 



This species is very nearly related to the following, to which I refer, as I have there 

 enumerated the differences. It has been recorded from Paraguay and Ecuador. 



