10 PROCEEDINGS OF THE NATIONAL MUSEUM vol.75 



chulsky, and equal in width throughout, except at the upper border 

 where they are subacute and sHghtly arcuate anteriorly; lower border 

 truncated by the prominent lateral edge of the genae, separated on the 

 vertex by a distance less than twice their own width. Labrum well 

 developed. 



Antennae not stout, funicle rather slender, joints three to seven; 

 equal in width, eighth widest and truncated at apex as seen from 

 below; terminated by a well formed, short oval and somewhat 

 compressed 3-jointed club; eleventh joint much smaller than the tenth 

 and rounded at apex. Mandibles not deepely emarginate at tip, 

 lobes short, subobtuse and subequal. Tempora rather long, straight, 

 parallel, very feebly convergent posteriorly, less prominent than the 



Figure 2.— Usechimorpha barberi. a, head fully extended as seen 

 FROM beneath; 6. antenna, basal joint nearly concealed by thb 



GENIAL plate 



lateral border of the genae, the latter slightly wider than long and 

 visible from above. The head widest between the anterolateral 

 angles of the genae. Antennal fossae rather large, open, dorsal and 

 marginal, wholly visible from above. 



Anterior coxal cavities widely open posteriorly, prosternal process 

 broad. Scutellum very small, elongate and entering for a short dis- 

 tance between the elytra at base. Intercoxal process of the first 

 abdominal segment broad, truncate between the coxae. Tibial spurs 

 small, slender, and distinct. 



In Usechimorpha there is in the median line of the submentum, near 

 to base of the mentum, a moderately coarse spiculiferous puncture; 



