Coleopferological N'oticeSj VI. 525 



are moderate in length and abundance. Head fonr-fiftLs as wide as the pro- 

 thorax, finely and sparsely punctate, feebly rugose, especially toward the 

 sides of the front, the impressions feeble ; epistoma moderate in length, smooth, 

 truncate and somewhat pale; labrum rather large and broadly rounded; eyes 

 large and unxisually prominent: antenna' long and not very stout, one-half 

 longer than the prothorax, the last three joints slightly larger, tenth almost as 

 long as wide, fifth distinctly dilated, oblique at apex. Prothorax one-half wider 

 than long, the sides strongly but broadly arcuate toward base, gradually con- 

 vergent and feebly arcuate toward apex, the latter truncate and subequal to 

 the base which is arcuate; basal angles very obtuse but not wholly obliterated, 

 the apical obtuse and blunt; disk rather finelj' and sj^arsely punctate, coarsely 

 reto-rugose near the sides. Elyira three-fifths longer than wide, only slightly 

 wider than the prothorax, parallel and straight at the sides, evenly and not 

 very obtusely rounded behind, the disk somewhat coarsely, strongly and 

 sparsely punctate, the punctures impressed. Alidomia rather finely and 

 sparsely clotheil with plumlieo-einereous i)ube.scence. Length 2.7-3.0 mm.; 

 width 1.0.5-1.2 mm. 



California (Sonomn Co.). 



This species is the most remarkable of the genus in the devel- 

 opment of the male sexual characters at the abdominal vertex. 

 The male is described above, and the female diflers in having the 

 head and prothorax slightly smaller when compared with the 

 elj'tra, although not differing much in their own individual size 

 or form ; the elytra however are distinctly broader and relatively 

 shorter. 



In the male the fifth ventral is deeply emarginate at the apex, 

 with the bottom of the eraargination rectilinear!}' transverse, but 

 the concave outline of the notch is continued on the disk past 

 this bottom truncature, forming a rounded depressed sinus with 

 the truncature as its anterior margin and its depressed floor hori- 

 zontal and flat ; the disk is broadly impressed, the impression 

 polished and impunctate toward the margins of the emargination 

 but elsewhere bristling with short erect black and spiculiform se- 

 tae. The inner spur of all the tibia? is strongly dilated. 



76. T. souoiliae n. sp. — Parallel, strongly convex, highly polished, black, 

 with a feeble greenish-metallic lustre; legs and antennae black; pubescence 

 rather short and fine, cinereous and sparse, interspersed Avith sparse black sette 

 which are shorter, more inclined and less conspicuous in the median parts of the 

 elytra. Head nearly three-fourths as Avide as the prothorax, smooth and pol- 

 ished, only slightly rugulose toward the sides of the front, finely and sparsely 

 punctate, the frontal imi)ressions large and rather feeble; epistoma well devel- 

 oped, smooth and impunctate; labrum transverse, large, broadly rounded; 

 eyes large, only moderately convex; antenuic slightly loiijicr than tlic pro- 



