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



2-6 as long as wide ; the anterior outline, beyond the stalk, is moderately convex and 

 then terminally a trifle concave, while posteriorly beyond the condylus and insignificant 

 basal elevation it is completely straight and then distally slightly convex. The chela, 

 which is 3'3 as long as wide, is scarcely as broad as the trochanter is long; the hand, 

 which is about as long as, but 1"4 wider than the tibia, is almost twice as long as broad, 

 about I'l wider than deep, and I'd as long as the fingers, which are much longer than 

 the hand is v?ide, and gape a trifle when closed ; the lateral outlines are moderately 

 convex, the anterior and the dorsal most distinctly so, and in a less degree the 

 ventral. Both fingers bear anteriorly three accessory teeth, while posteriorly the 

 immovable finger has four teeth and the movable finger five. The iiumber of " spots" 

 is extremely small, as the movable finger does not seem to possess any, in contra- 

 distinction to the immovable finger, which anteriorly 



has two groups of three spots close together and Text-fig. 71. 



posteriorly only two close together (figs. 25 b-c). 



Coocce (text-fig. 71). — The second as well as the third 

 pair are distinctly widened out towards the extremity ; at 

 the base they become suddenly narrower, especially the 

 second pair. The fourth pair are quadrangular, scarcely 

 widened out towards the extremity, and have the ch. ellhigsenii,^^.^., 2. Fourth 

 hinder, slightly concave margin well separated from pair of coxfe. x 44. 



the inner and almost 1*5 longer. 



Legs (PL XXXI. figs. 2bd-e). — The proximal joints are only indistinctly granular. 

 The hairs of the dorsal side are rather short, or short and pointed, with a median and 

 a terminal tooth ; the hairs of the ventral side are longer and more or less completely 

 simple. The tarsal " tactile " hair was missing in the specimen described, but in another 

 a very long one placed somewhat behind the middle and as long as the distance to the 

 thigh was observed. The legs are extremely long and slender, and the trochantin of 

 the first pair is much deeper than the femur proper, while the tibia is about IT as 

 long as the tarsus, which is 5-8 as long as deep ; the femur of the fourth pair of legs 

 is 3-3 as long as deep, scarcely IT as long as the tibia, and at least twice lower than 

 the tarsus is long. 



Colour. — The palps are light or dark reddish brown, and the body is brown. 



Measurements. — Cephalothorax 1-035 (0-920); abdomen 2-415 (1-245) mm. 



Palps: trochanter 0-552(0-310); femur 1-012 (0-335) ; tibia 0-989(0-375); hand 

 0-989 (0-529), depth 0-483 ; finger 0-736 mm. 



Leg I.: femur 0-676 (0-175), trochantin 0-144 (0-190); tibia 0-532 (0-114); tarsus 

 0-486 (0-084) mm. 



Leg IV. : femur 0-950 (0-288); tibia 0-874 (0-167) ; tarsus 0-585 (0-114) mm. 

 Variation. — The four specimens examined (probably all females) were almost com- 

 pletely alike in all respects, the most important differences being that the colour of 



