TYCHINI 267 



tulate, with pubescence intermediate in length between that of pronotum and 

 elytra. 



Head transverse, with long rounded tempora twice as long as eyes; eyes 

 small (0.05 mm. long x 0.03 mm. wide from a dorsal view) , not prominent, com- 

 posed of about 28 small facets, reniform in lateral view^ the eye being .073 mm. 

 in the dorso-ventral diameter. Occiput and associated portion of vertex strongly, 

 medianly tuberculate ; this tubercular elevation is evenly convex and not longi- 

 tudinally carinate. Vertex tumid in posterior half to between the eyes, depressed 

 in anterior half, with a pair of vertexal foveae distantly placed, one behind each 

 antennal insertion on a line running through middle of eyes; vertexal foveae 

 small, nude, about the diameter of an ocular facet, and connected by a well- 

 formed circumambient sulcus. This sulcus apically reaching the arcuate, me- 

 dianly concave, but entirely elevated frontal margin between antennal bases. 

 No longitudinal median carina on vertex. Fronto-clypeal area short, simply 

 declivous. Labrum relatively large, with a biarcuate apical margin. Ventral 

 surface of head simple. 



Maxillary palpi similar to Buris, relatively long and slender, four-seg- 

 mented; first segment minute, subcylindrical ; second, arcuate, elongate, as wide 

 as first for basal half then gradually inflated to apex; third not quite half as 

 long as second, obconical from a lateral view and triangular from a ventral view, 

 slightly wider than second; fourth only slightly wider than third, but as long 

 as preceding three segments, obliquely truncate at base, gradually narrowed to 

 apex, apex narrowly truncate with a short, conical palpal cone occupying the 

 apical truncature. 



Antennae eleven-segmented, distant, simple; first segment dorso-ventrally 

 compressed and arcuate, longer than second and as wide as ninth ; II regularly 

 elongate-oval, longer than third; III obconical; IV and V slightly shorter than 

 third, elongate-oval; VI moniliform, shorter than fifth; V, VIII, and IX pro- 

 gressively wider and pyramidal, the ninth wider than long; X distinctly trans- 

 verse, trapezoidal; XI as long as preceding four united, regularly truncate at 

 base, sides subparallel and widest apart in basal two-fifths, narrowing to a 

 conical, obtuse apex for apical three-fifths. 



Pronotum with rounded apical comers; strongly evenly convex on disc; 

 straight, convergent sides ; a small lateral nude fovea each side near base con- 

 nected by a nude, biarcuate, medianly expanded subbasal sulcus. 



Elytra with evenly convex, nodular humeri; each elytron with an entire 

 sutural stria; no basal foveae; no subhumeral fovea; flank with an entire longi- 

 tudinal carina arising just ventrad of the nodular humerus and continuing to 

 apex as a fine, but distinct carina. 



Abdomen with five tergites with a length ratio of l/l/l/li^/li/^ ; first 

 tergite each side with a margin formed by a straight external carina half the 

 segmental length, and a strongly arcuate internal carina which reaches apical 

 three-fourths of segment; second and third tergites each with a very short, 

 straight carina each side near base ; last tergite broadly rounded-triangular in 

 outline. 



