166 ENTOMOLOGICAL SOCIETY 



beak, scape not attaining the eyes, funicle six-jointed, first joint much 

 thicker than the following but not much longer than the second, joint 3 

 shorter than the second but longer than wide, joints 4 and 5 as long as 

 wide, joint 6 slightly transverse, club rather small, elongate-oval, pointed. 

 Head densely punctulate, flattened between the eyes, posteriorly slightly 

 convex and with finely elevated median carina, scales on upper side small 

 and glistening grey, those on the sides and under surface white. Thorax 

 at base much wider than long, sides rapidly widening from apex to very 

 near to the base, basal angles rectangular, base slightly sinuate each side, 

 apical constriction short but well marked, apical tubercles nearly obso 

 lete, posterior tubercles large and acute, disc densely and finely granu- 

 lato-punctate, covered with brownish scales, median line broadly im 

 pressed and covered with ochreous scales ; a vague transverse impression 

 each side in front of posterior tubercles ; scales on sides and under side 

 whitish or ochreous. Elytra transversely convex, at base much wider 

 than the thorax, shoulders well-marked but rounded, sides straight to 

 beyond the middle, then narrowing, posteriorly declivous and separately 

 rounded at apex ; surface striate, striae moderately broad and deep ; in 

 terstices slightly convex, the third a little more elevated, the fifth at 

 basal half much more prominent and subcarinate ; surface densely cov 

 ered with small greyish-black scales, which, when viewed from the side, 

 show a beautiful greyish- white, velvety lustre ; a 'large post-scutellar 

 patch of whitish or ochreous scales, scales along the middle of lateral 

 margin also whitish. Pygidium triangular, with a fine longitudinal 

 median carina. Under side covered with large, round, yellowish-white 

 scales ; legs less densely clothed with smaller and more hair-like scales ; 

 tarsi as long as the tibiae, without swimming hairs, third joint much 

 shorter and hardly wider than the second, claw-joint fully as long as the 

 rest of the tarsus. Length, 2.2 mm. 



Described from two specimens in Mr. Ulke's collection one 

 from Kansas, the other from Dakota. 



In the specimen from Kansas there are a few whitish scales 

 scattered among the dark scales of the elytral surface. The 

 species is evidently closely allied to the European Phytobius 

 (Lithodactylus) leucogaster but differs by its larger size, more 

 convex form, the third tarsal joint being narrower and the 

 elytral scales smaller and denser. 



The more obvious characters, aside of coloration, size and 

 form of body, distinguishing the two North American species, 

 . may be tabulated as follows : 



Thorax almost as wide as long, sides straight from base to beyond the 

 middle, posterior tubercles small aud rounded ; beak short and 



