186 



nre more or less indistinclly, seldom completely divided by a longiUidinal line. 

 The marginal row of the hairs, which are found on the sclerites, consists of 10 or 

 12; in addition to these hairs at least a single lateral one is found on each side 

 in front of the row, but none in the middle, as usual, have been discovered. The 

 two last tergites as well as sternites bear "tactile" hairs. 



Antennae (PI. IV, figs. 7 a-b). — The flagelliim consists of four hairs, of which 

 the anterior is serrated along the front margin (fig. 7 a); the lamina interior pos- 

 sesses three dentated lobes and a long terminal spine with four teeth; the basal 

 tooth of the serrula exterior has a terminal and anterior triangular Hap. The galea 

 is distinctly longer than the terminal hair and is provided with about six rather 

 long teeth (fig. 7 b). 



Palps (figs. 18 — 20, p. 186). — The completely smooth palps are shorter than 

 the body; they are provided with a number of rather long hairs, which are 



mounted with a few teeth, in addition to long, 

 slender and completely simple ones as shown in 

 figure 18; the fingers bear tactile hairs, the number 

 and arrangement of which do not seem quite like 

 to those of Ch. Birmanicns Thor., for the movable 

 finger has five(?) tactile hairs posteriorly and ventrally, 

 and the immovable finger four (fig. 19). The tro- 

 chanter, which has a short and distinct stalk, is lö 

 longer than broad and narrower than the femur; 

 its anterior margin is beyond the stalk evenly and 

 distinctly convex , while 

 the posterior is abruptly 

 convex and is produced 

 into a not very prominent 

 tubercle; no dorsal tu- 

 bercle is found, and the upper surface is scarcely pro- 

 duced, but, when observed from in front, obtuse-angled 

 and blunt (fig. 20). The femur, which has a short and 

 distinct stalk, is 22 longer than broad, and a little shorter, 

 but distinctly narrower than the tibia; the anterior margin 

 is beyond the stalk moderately convex and then concave; 

 the posterior, but especially the dorsal siuface is beyond 

 the stalk first abruptly convex and then moderately so. 

 The tibia, which is 37 longer than the well defined, but Kig. 19. 



rather short and thick stalk, is twice as long as broad; Fig. m. Ch. plcbejus i\. sp. {same 

 the anterior margin is beyond the deep notch of the specimen a.s fig. 1 8); right tiliin 

 stalk evenly, but very distinctly convex wilh a slightly '""' '''"''''' ' "" 



, ,.,.,,,. . , , Fig. 20. Same specimen a.slig. 19; 



marked concavity d.stally; Ihe posterior margin is beyond „.„ei.anier an.l femn.- of rigiit 

 the fairly well marked condylus first moderalely and palp: x 22. 



Fig. 18. Ch. plebejiis n. sp. 



(Simon's specimen from Kelantan); 



9; left palp; x 22. 



