236 Natural History Bulletin. 



perceptible, frontal fovea rounded, occipital foveas in depres- 

 sions which are not open towards the eyes and which leave 

 between them a narrow ridge connecting the occiput (which 

 is not elevated) with the anterior part of the vertex. Pal^i 

 W'ith the second joint pedunculate, somewhat triangular at the 

 thick end, the last two transversely ovate, the appendages 

 three times as long and hooked at the free end. Antenn<^ of 

 the male three-fourths the length of the body, joints nearly 

 equal, cylindrical, twice as long as thick, scarcely larger 

 toW'ards the end, last joint as long as the three preceding, 

 flattened on the inside. Females with joints 7, 8, 9, and 10 

 transverse, short, last joint shorter, oblong oval. Prothorax 

 wider than long, and as wide as the head is long; the basal 

 median foveee reach the middle of the disk, the lateral ones 

 are smaller, lateral sulcus or depression fully separating the 

 margin which is strongly arcuate. Elytra more convex than 

 in 67. consohn'}ins, the discal and sutural lines though deep 

 nearest the base, leave the intervals not very convex. Abdo- 

 men convex, margin broad, the edges arcuate. Legs long. 



Habitat. Territory east of the Mississippi. Iowa. 



Ct. consobrixus, Lee. Usually uniformly dark piceous 

 or with paler elytra, legs, and antennae, pubescence very 

 dense giving a rather rough appearance. Length, 1.75 mm. 

 Plate VI., Fig. 17. 



Head with the frontal incision reaching the oblong fovea, 

 the occipital foveK are small, the depression continuous from 

 side to side and very shallow causing the occiput not to appear 

 elevated. Otherwise the same as in the preceding species. 

 Prothorax as long as wide, the basal median fovea shorter, 

 the lateral sulcus separating a narrow slightly arcuate margin. 

 Elytra more depressed, flat, the linear impressions deeper and 

 the shoulders more prominent than in Ct. fieens. 



Habitat. Same territory as the preceding. 



Ct. zimmermanni, Lee. Pale brown or testaceous, not 

 densely pubescent. Length, 1.65 mm. 



