304 ME. 0. J. "WITH ON SOUTH-AMEEICAN CHELIFEEIN^ 



very broad anterior one is mucli the more prominent. Abdomen has along the hind- 

 most margin of each tergite about twelve hairs in addition to a single lateral and a 

 median one in front of the row ; the " tactile " hairs are arranged as in Gh. similis 

 Balz. 



Antennce. — The very slender gcdea, which extends distinctly beyond the terminal 

 hair, being almost twice as long as the latter, has about five teeth decreasing in length 

 from the base to the tip. 



Palps (PI. XXXI. figs. 29 a-h). — The palps are smooth and polished, with very slender 

 hairs. The troclianter, which is 1'5 as long as wide, is slightly convex anteriorly and 

 posteriorly slightly produced ; dorsally it is prolonged into a low rounded protuberance. 

 The femur has a short, well-defined stalk, beyond which it is scarcely attenuated 

 towards the end. It is 2"4: as long as wide ; the anterior outline is very slightly 

 convex and then concave, while the posterior, beyond the stalk, is not very 

 abruptly convex, and then almost straight ; the dorsal line, beyond the stalk, is 

 moderately convex and then very slightly so. The tiMa,, which is as long as and a little 

 wider than the femur, has a short, not very well-defined stalk and is 2'2 as long as 

 wide ; anteriorly it is moderately convex and then a trifle concave, while posteriorly, 

 beyond the not very prominent condylus and almost obsolete basal elevation, it is 

 almost straight and then slightly convex ; the dorsal as well as the ventral outlines are 

 slightly convex. The chela, which is 3"3 as long as wide, is about 1"1 broader than 

 the trochanter is long; the /icmt?, which is a little longer and 1*4 wider than the 

 tibia, is VI as long as wide, scarcely 1"1 as wide as deep, and 1"2 as long as the fingers, 

 which are 1"5 longer than the hand is wide and do not gape when closed; the anterior 

 outline is moderately convex, the posterior as well as the dorsal and ventral areas are 

 only slightly so. Anteriorly the immovable finger has two accessory teeth, while the 

 movable has a single one only ; the former of the fingers has anteriorly about eleven 

 " spots" arranged as shown in figure [cf. above). 



Coxce &G. — The fourth pair are almost trapezoidal, with the inner margin about 1-5 

 as long as the hinder, and with the obtuse angle between them not well defined. The 

 legs appear to be long and slender, but could not be thoroughly investigated in the 

 single specimen which was at my disposal. 



Colour. — Palps light reddish brown. 



Measurements. — Cephalothorax 0"736 (0'621); abdomen 2*30 (1"38) mm. 



Palps : trochanter 0-345 (0-230) ; femur 0-647 (0-265) ; tibia 0-647 (0-285) ; hand 

 0-713 (0-400), depth 0-368 ; finger 0-598 mm. 



Material. — By the kindness of Mr. Eliingsen I have been able to examine one of his 

 original specimens ( $ ) ; the species has only been collected in Ecuador. 



Remarks. — For several details I refer to Mr. EUingsen's description. This species 

 is well defined from the other species of this group by its very minute size, and slender 

 palps with fingers only a little shorter than the hand. 



