AMERICAN COLEOPTERA. 341 



Blight elevation, sides slightly convergent behind, surface punctured with elon- 

 gate shallow fovese, at the sides rounder. Terminal spiracle feebly prominent. 

 Pygidium sparsely foveate and subcarinate at middle. Body beneath more 

 shining, sparsely foveato-punctate; sides of prothorax with distant strigse 

 Legs slender, anterior tibice slightly arcuate, teeth obtuse nearly obsolete. 

 Length .GO inch; 17 mm. 



Two specimens taken by Mr. GaLb, in California, probably in tlir> 

 southern end of Tulare Valley. " 



Closely allied to phmatus, which has the hind angles of the thorax 

 prominent and smooth, and the teeth of the tibiae acute. The fourth 

 anterior tarsal joint is suddenly broader than the preceding and equals 

 twice its breadth. The anterior edge of the mentum plate is thicker 

 and in the concavity more coarsely punctured. 



C. pilosicollis, n. sp. — Black, opaque. Head convex, coarsely punctured and 

 clothed with long black erect hairs. Thorax moderately convex, densely and 

 coarsely punctured and clothed with long black erect hairs; anterior margin 

 truncate at middle, rather suddenly sinuate within the anterior angles which 

 are moderately prominent; sides rounded and slightly sinuate near the hind 

 angles which are moderately prominent, acute and limited within by a faint 

 groove. Elytra slightly convex, parallel, surface with coarse deeply impressed 

 punctures, and sparsely pilose. Last spiracle moderately prominent. Pygi- 

 dium convex with coarse foveae and long hairs. Body beneath coarsely punc- 

 tured and sparsely hairy. Mentum with an obtuse point behind. Length .44 

 inch ; 11 mm. 



This species greatly resembles angularis. but is more convex and 

 clothed with much longer hairs. The main difference between the 

 two species is in the form of the tarsi and tibia3 uf which mention ha.** 

 already been made. 



One specimen from northwestern California, collected by Mr. Gabb. 



C. angularis, ItQc-^armatits, Walker, Nat. in Vancouver II, 320, 

 I have specimens of the latter species taken in an adjacent region. 

 It is greatly to be regretted that the above paper by Mr. Walker, was 

 ever allowed to be placed in print, for besides the absolutely valueless 

 descriptions, scarcely one species in ten (if as many) is really new, the 

 large number being well known common species, some having been 

 described by Eschschultz and Manncrheim more than twenty-five years 

 ag». 



XYLOBIUS, Lntr. 

 X. cylindriformis, n. sp. — Cyliinlrical, slightly nairowed posteriorly, shining. 

 Head convex, coarsely punctured, black; clypeus and anterior margin of front 

 rufous. Antennre entirely rufous. Thorax slightly broader than long, some- 

 what narrower in front, very convex, coarsely punctured, at base a slight im- 

 pression on each siile of scutellum; color black, apex and base margined with 

 rufous, also the sides but very narrowly ; hind angles acute not divergent, em- 



TRANS. AMKR. EST. SOC. (44) DKCKMDKR, 1871. 



