166 EMIL BRENDKL, M. D. 



Pronotutn and anterior part of the head conspicuously punctate. 



thoracicuin. 

 Head as wide as the prothorax. 



Prothorax wider than long, shoulder width rather narrower than the pro- 

 notnm, sides of the elytra very divergent. Length 0.85 mm. 



laticolle n. sp. 

 Prothorax as wide as long, seemingly longer. 



Pronotum punctate, head impunctate piincticolle. 



Pronotum impunctate. 



Head conspicuously punctate <lubiuin. 



Head impunctate. 

 Occiput not impressed, convex with a short sulcus (or carina?), pro- 

 notum with the sulcus nearly straight or at least not angulate, 

 no lateral fovese, first dorsal longer than the succeeding seg- 

 ment coiivexiiluni. 



Occiput convex not perceptibly sulcate. 



Pronotal sulcus deep, angulate. Length 0.9 mm discolor. 



Pronotal sulcus faint, straight. Length 0.5 mm .simplex. 



Occiput deeply impres.sed, vertex sulcate in the middle. 



Elytral discal impression short. Length 0.9 mm parvilluill. 



Elytral discal impression one-half the length of the elytron. 

 Length 1.1 mm iliajtis n. sp. 



T. (liirtiin n. sp. — Dark chocolate-brown throughout (making the impression 

 of hardness and solidity), convex, polished, impunctate, pubescence sparse, 

 short. Length 1.2 mm. 



Head narrower than the prothorax, frontal ridge slightly elevated, the sulcus 

 here interrupted; the fovese. sharply impressed, in a line through the middle 

 between the frontal ridge and the base; occiput slightly sulcate. Antennae 

 longer than the head. Prothorax with the transverse sulcus nearlt straight, the 

 fovesE small. Elytra very convex, the sides arcuate from the shoulders to the 

 tip, the di.sc widest nearer the middle than usual, discal lines one-half the length 

 of the elytron, shoulders prominent. First dorsal without caringe, thighs in- 

 flated %. Palpus: third joint globular, half as thick as fourth, which is little 

 longer than wide. 



Cedar Rapids, la., May, 1891. 



T. COStale n. sp. — Of a warm chestnut-brown color, impunctate, pubescence 

 on the elytra more visible, legs and antenuse paler. Length 1.2 mm. 



Head narrower than the prothorax, antennse longer than the head, frontal 

 ridge straight, sulcus broadly parabolic, connecting the fovese, which are far 

 apart and situated unusually far behind and almost on the declive side of the 

 head, occiput impressed, but not sulcate. Prothorax as long as wide, if not wider, 

 basal sulcus deeply angulate in the middle, lateral fovese larger and seen from 

 above. Elytra not as convex as in T. durum, shoulder width as wide as the pro- 

 thorax, sides very arcuate, discal line one-half the length of the elytron or lon- 

 ger. Abdomen not very convex, with two long carinse on the base, which are 

 divergent and two-thirds of the length of the segment ; first visible dorsal longer 

 and the second (or first visible) ventral nearly twice as long as the succeeding 



