320 Trans. Acad. Set. of St. Louis. 



median line, the punctures rather strong and well separated; abdomen 

 snbequal in width to the elytra, parallel, finely, not densely punctate, 

 the three basal impressions decreasing slightly in depth, more sparsely 

 and not at all more coarsely punctured than the remainder of the sur- 

 face. Length 2.7 mm.; width 0.9 mm. South Africa (.Cape Town). 



bisolata n. sp. 



Allied to nitida and verna, having the same structure of the 

 Sntermesocoxal parts, but differing from the former in its less 

 transverse prothorax and elytra, and, from verna, in its more 

 :8lender and parallel form ; from both it differs in having the 

 •sides of the prothorax much less converging from base to 

 apex. 



Mtrmedoniini. 



Tinotns Shp. 



Tinotus is the Myrmedoniid representative of Baryodma 

 ^nd is so similar in facies as to be readily confounded with 

 that genus at first sight. The intermesocoxal parts are 

 broad, the mesosternal process slightly overlapping the me- 

 tasternum and carinate along the middle as in Baryodma ; 

 'these parts seem to be normally constituted in the following 

 species, which is remarkable in not having a medial excava- 

 tion on the head or pronotum and in the singular basal im- 

 pressions of the latter : — 



J'orm moderately stout, convex and shining; antennae toward base and 

 legs more or less pale piceo-rufous; Integuments feebly micro-reticu- 

 late, minutely, not densely punctate, rather more distinctly and asper- 

 ately on the elytra, each of the very minute abdominal punctures at 

 the anterior convergence of two long fine straight lines; pubescence 

 sparse and short but extremely coarse, suberect and setiform, pale In 

 color; head unimpressed, as long as wide, the eyes moderate; antennae 

 short, barely as long as the head and prothorax, gradually and rather 

 fltrongly incrassate distally, the subapical joints distinctly transverse, 

 the second and third subequal; prothorax transverse, three-fourths 

 wider than long, not quite twice as wide as the head, the sides 

 .parallel and rounded, becoming strongly convergent at apex, the base 

 broadly arcuate, the surface wholly unimpressed except at the basal 

 margin, where there are two short straight oblique impressions almost 

 equally trisecting the basal margin and diverging anteriorly; elytra 

 equal In width to the prothorax and but little longer; abdomen at base 

 nearly as wide as the elytra, gradually and moderately tapering thence 

 to the tip, with the sides feebly arcuate, the side margins rather thick. 



