68 OTIOKIIYNCIIID^E. 



[Horn. 



discal spot of the elytra may become evanescent. The erect hairs are also 

 variable, and assume the color of the surface in which they are placed. 

 Collected at Crystal Springs, California, by Mr. G. R. Crotch. 



MYLACUS Sch. 



Mi/lacus Schon. Gen. Cure, viii, 1, p. 144. 



Rostrum as long as the head and slightly narrower to the tip which is 

 very feebly eraarginate and with smooth space, above broadly but feebly 

 channeled, a feeble transverse impression at base, alae feebly prominent. 

 Scrobes superior, very slightly convergent, deep in front, broadly open and 

 very shallow posteriorly, not attaining the eyes. Antennaj moderately 

 long, sub-apical, sparsely hairy ; scape gradually clavate, slightly arcuate, 

 attaining the anterior margin of thorax ; funicle 7-jointed, joints 1-2 longer, 

 3-7 sub-moniliform, club oval. Thorax cylindrical, short, transverse. 

 Scutellum wanting. Elytra globoso-oval. Metasternum very short, side 

 pieces entirely covered posteriorly by the elytra. Hind coxae open exteri- 

 orljr attaining the elytral margin. Intercoxal process of abdomen very 

 broad, truncate ; first segment deeply emarginate by the coxte and very 

 short behind them ; second abdominal segment very little longer than the 

 third separated from the first by an arcuate suture. Tibisie not mucronate. 

 Claws almost entirely connate. Body pubescent. 



M. sac3atus Lee. {PtocJius) Pacif. R. R. Rep. App. 1, p. 56. 



Form oval, color black, shining, surface sparsely clothed with short cine- 

 reous pubesence. Head and rostrum one and a-half times longer than the 

 thorax, moderately densely punctured, sparsely pubescent. Thorax trans- 

 verse, twice as broad as long, sides feebly arcuate, apex and base truncate, 

 disc convex, surface densely and at the sides confluently punctured, surface 

 sparsely pubescent. Elytra broadly oval (^ or globoso-oval 9 , with strioe 

 of coarse punctures rather closely placed. Body beneath black, shining, 

 metasternum densely punctured at the sides, abdomen smoother, more 

 shining, surface sparsely pubescent. Legs black, sparsely pubescent. 

 Length .12-16 inch ; 3-4 mm. 



The hind tibiae of the males have at the tip of the hind tibiie immedi- 

 ately in front of the tarsal articulation a very feeble emargination, the 

 female has two small fixed spurs. 



There can be little doubt that this species should be referred to Mylacus. 

 The characters given in the table supplemented by those above given will 

 serve to distinguish it from all others in our fauna. 



Occurs in California and Oregon. 



THRICOLEPIS n. g. 



Rostrum nearly as long as the head, slightly narrower towards the tip 

 which is feebly emarginate, alae not divergent. Scrobes superior, short, 

 terminal, cavernous, somewhat reniform in shape and convergent above. 

 Antennfe moderate, sub-terminal, scape feebly arcuate, attaining the mar- 

 gin of the thorax ; funicle 7-joiuted, longer than the scape, first two joints 



