BRACHYGLUTINI 161 



right, in an arc the length of the labrum removed from the head. Ventral surface 

 of the head flattened, subglabrous, flask-shaped in outline and strongly marked 

 by: (1) a high, thin, median, longitudinal carina; (2) a strong lateral carina, 

 each side, which is straight and internally directed from base of mandible to 

 base of maxilla, then arcuate externally to a point beneath occiput and finally 

 internally arcuate to base of head; (3) a posteriorly arcuate, ocular carina 

 from near the anterior margin of each eye to the median part of the lateral 

 carina (PI. VII, 10). 



Maxillary palpi relatively long and slender, four-segmented; first segment 

 minute; second strongly arcuate, basally slender, and apically inflated, slightly 

 compressed laterally ; third short, subtriangular, with the lateral face very con- 

 vex; fourth very long and slender, wider than third and longer than second, 

 obliquely truncate at base, narrowing gradually to acute apex, the apex bearing 

 a long, obtuse, obliquely placed palpal cone, and of especial note: this fourth 

 segment has an oblique, short, median scar or camiform line on the exteral face. 



Antennae eleven-segmented, widely separated at base by almost the width 

 of the head, not including eyes; segment I subquadrate, obonical, wider and 

 slightly shorter than second; II elongate-cylindrical; III narrower and as long 

 as second, obconical ; IV, VI and VIII shorter than V or VII but subequal in 

 width, obconical to conical; IX elongate-obconical, distinctly longer than wide, 

 and longer than either seventh or tenth; X cylindrical, distinctly shorter than 

 ninth; XI forming the club, relatively large (0.17 x 0.08 mm.) and as long as 

 eighth, ninth, and tenth united, subasperate. 



Pronotum simple, with neither lateral nor median foveae. 



Elytra with obtusely elevated humeri ; each elytron with four, very minute, 

 shallow points replacing the foveae, and an obliquely transverse basal carina 

 just anteriad of these discrete foveal points, a faint sutural stria but no dorsal 

 stria. Elytral flank simple. 



Abdomen with a distinct, but very narrow margin. Five visible tergites of 

 which the first is elongate (0.17 mm. long), as long as second and third united, 

 with two very small, inconspicuous, straight, parallel carinae at base which are 

 one-eighth as long as segment and separated by a little more than one-fourth 

 of the segmental width. Second tergite very slightly longer than third. Fourth 

 tergite about as long as third, vertical and not fully visible from above. Fifth 

 tergite obliquely ventral, wholly invisible from above, distinctly longer than 

 fourth, but not quite twice as long as fourth tergite, apical margin slightly 

 sinuate laterally and subtruncate at median fifth of width. 



Five sternites visible medianly and six sternites visible laterally, the first 

 of these being invisible beneath the metasternum medianly between the distant 

 posterior coxae, but visible laterally near each elytron, as an elongate-acute 

 triangle. Second sternite very long laterally, becoming shorter medianly and 

 concave where it is as long as the third and fourth united, and bearing each side 

 at lateral third a longitudinally arcuate carina which arises on the basal half 

 of the first sternite and extends through apical half of second. Third sternite 

 medianly tumid, a little longer than fourth. Fourth sternite flattened and sub- 



