152 CASEY 



CcbIus Esch. 

 In this genus the body is oval to oblong-oval and always 

 strongly convex in form, with a dense fringe of erect fulvous 

 setse along the sides and with bristling hairs of the same nature 

 on the legs, along the anterior margin of the pronotum and on 

 the head behind the suture, but otherwise subglabrous. The 

 head is sinuate anteriorly, with a deep transverse suture delimit- 

 ing the epistoma, and the sides project laterally far beyond the 

 eyes, which are basal and more or less concealed by the pro- 

 thorax, the latter transverse, narrowed at the apex, which is deeply 

 sinuate, the base truncate and having a tine coriaceous margin 

 and the hind angles not at all produced posteriorly. The scu- 

 tellum is minute and triangular, being occasionally obsolete 

 and the elytra are rounded, feebly embracing the sides of the 

 body beneath, with the epipleura^ narrow, gradually wider and 

 more or less concave basally. The legs are short and stout, 

 all the tibiae subequally dilated externally at tip, the terminal 

 spurs long and hollowed or flattened on their under surface, the 

 tarsi very slender, moderately long, with the joints swollen dis- 

 tally and bearing each a terminal corona of stiff fulvous setse, 

 the hind coxae narrowly separated as in Coniontis. The species 

 are rather numerous, and, so far as known, may be defined as 

 follows : — 



Elytral punctures strongly muricate ; species inhabiting the mainland 

 of central and southern California exclusively. [Coelus insp.]...2 



Elytral punctures simple, not muricate, the lateral fimbriae less devel- 

 oped; species confined to the islands off the coast of southern 

 California. [Pseudoccelus n. subgen.] 12 



2 — Epistoma very deeply sinuate 3 



Epistoma more broadly and less deeply, though conspicuously, sinuate, 



the sinus trapezoidal in form, the bottom narrowly transverse ; 



species more northern in habitat 5 



Epistoma broadly and very feebly sinuate, the sinus generally subevenly 

 rounded 7 



3 — Pronotum subevenly punctured throughout. Body broadly oblong- 



oval, black to piceous in color, polished, moderately small in size ; 

 head strongly and densely punctate, with a median impunctate area 

 at base as usual; antennae rufous, having a compact fusiform club 

 of about three joints ; prothorax two and three-fourths times as 

 wide as its median length, the sides rather strongly converging 

 from base to apex and broadly rounded, more strongly so basally, 



