22 J. L. LECONTE, M. D. 



SILIfS Charp. 



S. ntra. — Entirely black, prothorax lobed at base and deeply foveate, ante- 

 basal excavation deep, hind angles prolonged and earinate, appendage straight, 

 front angle of excavation rectangular. Antennae as long as the body, third joint 

 as long as the fourth. Length ^ mm. 



One male, Washington Territory. Resembles S. cava, but differs by 

 the longer hind angles of prothorax and by the uniform black color. 



MAL,THODES Kies. 

 M. toicolor. — Black, head and prothorax red ; the former wider than pro- 

 thorax, eyes very convex and prominent. Prothorax wider than long, narrowly 

 margined. Elytra with punctures arranged nearly in rows, two-thirds as long as 

 the elytra. Length ;') mm. 



One female, Arizona ; the 2d and 3d joints of the antenna? are equal, 

 each a little shorter than the 4th. The head and prothorax are not 

 punctured, the former opaque, the latter shining, not channeled. By the 

 form and sculpture of the prothorax this species seems intermediate be- 

 tween Malthinus and Malthodes. 



HYI>NO€RR.4. Newm. 



H. longa. — Greenish black, pubescence long, erect, gray ; moutii, antenn», 

 front legs, middle tibiae and tarsi, and hind tarsi testaceous. Elytra dark blue, 

 strongly punctured, becoming granulate near the tips, which are separately i-ounded 

 and distinctly serrate. Prothorax longer than wide, anterior constriction well 

 defined, sides broadly and obtusely dilated. Length C-V mm. 



Arizona, several specimens were collected by Mr. Morrison. 



THECA Muls. 

 T. striatopiinctata.— Oval, convex, dull black, pubescent with erect gray 

 hairs. Prothorax obliquely narrowed from the base, punctures of the disc with 

 sparse shallow punctures becoming weaker at the sides. Elytra with strongly punc- 

 tured strife. Antenna? ferruginous. Length 2 mm. 



California, one specimen. Of the same size and form as T. profunda, 

 but differs by the strongly punctured elytral stri;ie and less pujictured 

 prothorax. 



PHYl»IATOI>ES Muls. 



P. ater.— Black, very sparsely and finely pubescent. Head punctured; pro- 

 thorax one-half wider than long, strongly punctured, much rounded on the sides. 

 Elytra strongly and equably punctured. Antennfe and legs tinged with piceous. 

 Length 6.5 mm. 



One female collected at Buffalo, N. Y., and kindly given to me by 

 Mr. F. Zesch. The antennae are slender and about two-thirds as long as 

 the body. 



C'RIOPRO^iOPlJS Serv. 



C lateralis.— Black, clothed above and beneath with fine, erect, ashy pu- 

 bescence. Beneath finely, above deeply and coarsely punctured. Prothorax 



