240 ME. C. J. WITH ON SOITTH-AMERICAN CHELIFERIN^ 



outlines are slightly convex, with the greatest curvature towards the middle. The 

 immovable finger has a single *' spot " anteriorly just beneath the median tactile 

 hair, while posteriorly it has five spots arranged as shown in fig. 6 c ; the movable 

 finger has three spots only, arranged somewhat behind and a little in front of the 

 median tactile hair. 



Coxce. — The coxae resemble in structure those of Ch. rufus Balz., but the second 

 pair have the interior margin much shorter and consequently appear more triangular, 

 while the third pair are scarcely different, the interior margin being a mere point; 

 the fourth pair have a more triangular appearance than in Ch. nifiis Balz., as the 

 inner margin is very short and the hinder almost straight. 



Legs. — Proximal joints are very indistinctly granular. The rather short hairs are 

 dorsally slightly clavate or obtuse, except on the tarsus terminally; ventrally they 

 are obtuse or pointed, simple or almost simple ; the trochanter and trochantin 

 possess one long slender hair on the ventral surface ; the tarsal " tactile " hair is 

 two-thirds removed from the base and much longer than this distance to the end. 

 For the structure of the femur of the first pair of legs I refer to Ch. rufus Balz. ; 

 the tibia is 1'2 as long as the tarsus, which is 4'9 as long as deep. The femur of 

 the fourth pair of legs is 2*6 as long as deep, almost 1'2 shorter than tibia and 

 1"6 lower than the tarsus is long. 



Colour. — The colour is very characteristic. The palps are yellowish brown 

 with dark brown chela; the cephalothorax is dark brown, sometimes almost blackish, 

 with a white spot, which almost covers the median portion of the second tergite. 

 The lateral parts as well as the tip of the abdomen are greenish brown, while the 

 middle is adorned with a white band in continuation of the thoracic one, almost 

 completely covering the first abdominal tergite and decreasing in width towards 

 the end. 



Measurements. — Cephalothorax 0-828 (0*598) ; abdomen 1*051 (0-736) mm. 



Palps: trochanter 0-437 (^0-195); femur 1-081 (0-175); tibia 1-081 (0-169); 

 hand 0-713 (0-253), depth 0-230 ; finger 0-483 mm. 



Leg I.: femur 0-456 (0-152), trochantin 0-099 (0-160); tibia 0-342 (0-099); 

 tarsus 0-281 (0-053) mm. 



Leg IV. : femur 0-562 (0-220) ; tibia 0-471 (0-110) ; tarsus 0-357 (0-065) mm. 



Female. 



Abdomen. — The granulation is more uniformly distributed all over, as the white 

 longitudinal band is less developed. 



Antennce. — The galea is very nearly the same as in the male, but extends distinctly 

 beyond the terminal hair. 



Palps (PI. XXIX. fig. 6 d). — Not only trochanter, but also interior surfaces of 

 the tibia and femur fairly distinctly granular. The trochanter, which is 1-9 as long as 



