286 CALIFORNIA ACADEMY OF SCIENCES, 



short, simply a little convex on each division separated 

 by the longitudinal deep line, with the carinate longitudi- 

 nal lines divaricating and subobsolete ; lateral margin dis- 

 tincth' constricted and a little sinuated behind the ante- 

 rior lobe, with the exterior margin carinated and the car- 

 ina extending along the outside of the humeral tubercle. 

 Scutellum tilled up in the middle, coarsely transversely 

 wrinkled, with the tip acutely protracted, long, and ru- 

 fous. Corium very minutely scabrous, with a short pale 

 streak on the middle of the posterior border; veins of the 

 membrane blackish on a pale brown surface. Feet and 

 tip of tibiae pale dull fulvous. Abdomen broadly border- 

 ed with red both above and below, incisures of the ter- 

 gum more or less red; the margin not covered by hemi- 

 elytra narrow. 



Length to tip of venter, 19-21 mm. Width of prono- 

 tum, 4—4/^ mm. 



A few specimens were collected at Cape St. Lucas by 

 Mr. John Xanthus. 



CONORHINUS MAXIMUS n. Sp. 



Coal black, shining, narrower than C . dimidiatus Lat. 

 Head much thicker than in any other species known to 

 me, rough and transversely wrinkled, somewhat pubes- 

 cent, the tip of tylus projecting over a notch, each side 

 of which the cheek projects in a produced point, base of 

 this cheek long triangular and scooped out; the buccular 

 tip knob-like and protracted anteriorl}'; rostrum barely 

 reaching upon the sternum; space behind the eye very 

 short, coarsely wrinkled; antennae mutilated. Pro- 

 notum moderately short, with a strongly constrict- 

 ed collum directly behind the head, the outer ends 

 of which ai^e drawn out and knob-like ; anterior lobe 

 very short and narrow, deeply sunken on the middle, with 

 the tumid elevations each side set with sinuous series of 



