Coleopterological Notices^ VI. 525 



are moderate in length and abiindauce. Head four-fifths 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, 

 tnrncate and somewhat pale; lalnum rather large and broadly rounded; eyes 

 large and unusually prominent; antenn;i.' 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 l>ut broadly arcuate toward base, gTadually 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 finely and sparselj' punctate, coarsely 

 reto-rugose near the sides, EJijira 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. Ahdomtn rather finely and 

 sparsely clothed with iilumbeo-cinereous pubescence. Length 2.7-3.0 mm.; 

 Avidth 1.05-1.2 mm. 



California (Sonoma 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 differs in having the 

 head and prothorax slightly smaller when compared with the 

 elytra, althougii 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 emargination rectilinearl}^ 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 tibije is strongly dilated. 



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

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

 rather short and fine, cinereous and sparse, interspersed ^\\i\\ sparse black setie 

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

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

 ished, only slightly rugulose toward the sides of the front, finely and s^wrsely 

 punctate, the frontal impressions large and rather feeble; epistoma well devel- 

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

 eyes large, only moderately convex: antennse slightly longer than the pro- 



