108 Journal New York Entomological Society. [Vol. viii. 



Elongate-oval, convex, finely and sparsely pubescent, shining, piceous with a red- 

 dish tinge ; legs and. hase of the antenna; yellowish -brown ; head more finely 

 punctured ; prothorax and elytra equally punctured, the former transverse, 

 narrower in front, rounded at the sides which are narrowly margined, the base 

 margined like the sides and with a large puncture half way between the middle 

 and the basal angle, the latter obtuse and rounded. Length 4.0 mm. Colorado 

 (Veta Pass) concolor Lee. 



The latter of these species I have not seen, but, from the originally 

 published characters reproduced above, it would seem to be provision- 

 ally attachable to the true Tetratoma; the principal differences appear 

 to reside in the pubescence and in the rounded basal angles of the 

 prothorax. 



Abstrulia, gen. nov. 



The species of this genus differ greatly from tnincorum in general 

 habitus and in the structure of the sides and base of the prothorax. 

 The irregularly crenulate sides of the latter are prominent just before 

 the middle and at basal third or fourth, and the disk is concave along 

 the basal margin, with the foveas larger, deep and more impressed or 

 less punctiform, the scutellum smaller and more nearly subquadrate, 

 and the elytra are dark in color with a complex maculation of pale 

 spots, the punctures coarse, impressed and sparse. The surface is 

 sparsely but distinctly pubescent, and the basal joint of the hind tarsi 

 is, as a rule, obviously shorter than the last. The species are mutu- 

 ally closely allied, and the three before me may be thus defined from 

 the male : — 



Basal joint of the hind tarsi very much shorter than the last 2 



Bdsal joint scarcely visibly shorter than the last 3 



2 — ( >blong-oval, convex, polished, pale piceous-brown in color, the legs and antennre 

 concolorous, the elytra blackish with pale flavous and sharply defined intricate 

 markings, the pale areas together somewhat exceeding the dark, and having as 

 a prominent feature a subsutural obverted C-shaped mark on each extending 

 near the suture to apical two-fifths ; antennre scarcely as long as the head and 

 prothorax, the club distinctly shorter than the stem, cylindric, rather compact, 

 the joints wider than long, the last a little longer than wide and conically 

 pointed, the seventh joint transverse and forming a gradual passage to the club, 

 third as long as the next two combined ; prothorax short, nearly twice as wide as 

 long, the base and apex equal in width, the latter transverse, narrowly and 

 feebly sinuate at each side, the middle broadly arcuate and as advanced as the 

 very broadly rounded angles, the base broadly, feebly lobed at the middle, the 

 angles very obtuse but not rounded ; punctures coarse and rather sparse, but 

 not as coarse or sparse as those of the. elytra, the pubescence distinct ; elytra three 

 and a half times as long as the prothorax and equal in width, two-thirds longer 

 than wide, parabolic behind, parallel at the sides ; basal angles obtuse, the cal- 



