324 ME. C. J. WITH ON SOUTH-AMEEICAN CHELIFBRIN^ 



Bemarks. — This species, of which the small specimens (var. m^■?^or Balz.) examined 

 were exactly like one determined by Mr. Ellingsen, is easily distinguished from all 

 other South-American species by the shape of the palps. 



51. Chelifbk elongatus Ell. (Plate XXXI. figs. 37 a-g; text-fig. 84.) 

 1903. Ellingsen, (15) pp. 149-151. 



Fe^nale. 



Cephalothorax. — Ocular spots indistinct. The cephalothorax, which is distinctly 

 longer than wide, has no transverse grooves, is smooth and provided with fairly long 

 hairs. 



Abdomen. — The fairly long slender abdomen has all the tergites, with the exception 

 of the first and eleventh, more or less distinctly divided longitudinally. The tergites 

 have the sclerites smooth, and possess along their hindmost margin about ten 

 moderately long hairs in additition to four (six "?) in front of the row ; tip of the 

 abdomen with tactile hairs. 



Antennce. — The galea, which extends very much beyond the terminal hair, is fairly 

 long and slender and is provided with about six short branches in the distal third. 

 The flagellum consists of four hairs, of which the anterior has about ten longer and 

 shorter teeth along the front margin. 



Palps (PL XXXI. figs. 37 a-/).— The maxillce are smooth and so are the palps, with 

 the exception of the posterior surface of the trochanter and the anterior of the three 

 following joints, which are more or less distinctly granular. The fairly long and long hairs 

 are stiff and not completely simple ; long, slender, and completely simple hairs are placed 

 posteriorly in the middle and at the tip of the femur, posteriorly at the base of the 

 tibia, one above and one below the basal elevation, and posteriorly at the base of the 

 hand at least a single one ; the hand has ventrally between the base and the insertion 

 of the finger a single hair (fig. 37 d). The trochanter, which is 1"5 as long as wide, is 

 anteriorly slightly convex, almost straight, and posteriorly is produced into a rounded, 

 fairly long tubercle ; dorsally it is prolonged into a somewhat conical and fairly deep 

 protuberance ; the trochanter is somewhat deeper than wide, but not as deep as the 

 femur is. The femur has a short, well-defined stalk, beyond which it is slightly 

 attenuated towards the end. It is 2'2 as long as deep ; the anterior outline is slightly 

 convex and then concave, while the posterior is rather abruptly convex and then almost 

 straight ; dorsally the outline is first abruptly convex and then completely straight ; 

 the femur is about as deep as wide. The tibia, which has a long, slender, fairly well- 

 defined stalk, is longer and wider than the femur, and is twice as long as broad ; 

 anteriorly it is very strongly convex, almost semicircular, and then terminally almost 

 straight, while posteriorly, beyond the prominent condylus and well-marked basal 

 elevation, it is slightly concave and then strongly convex ; the dorsal outline is strongly 



