238 CALIFORNIA ACADEMY OF SCIENCES. 



ASEMOBIUS n. g. 



Form elongate, much depressed, surface moderately 

 shining. Head moderate in size, scarcely longer than 

 wide, slightly prolonged behind the eyes, very abruptly 

 constricted, the occiput not elevated transversely at the 

 constriction. Mandibles moderately prominent, acute at 

 tip, toothed at middle. Labrum transverse, truncate. 

 Maxillar}' palpi long and slender, the last joint a little 

 longer than the third. Antenna slender, first joint cylin- 

 drical, stout, second shorter and more slender, third very 

 slender and nearly as long as the first two, joints four to 

 seven equal in length, slender, slightly thickened at their 

 distal end, joints one to seven glabrous with few hairs, 

 joints eight to ten quadrate, broader, eleventh more elon- 

 gate, joints eight to eleven densely punctulate and pubes- 

 cent. Prothorax with sides explanate and serrate. Ely- 

 tra quadrate, emarginate at base, apex truncate, acutely 

 notched each side, disc costate. Abdomen depressed, 

 gradually narrowed to apex, sides widely margined. Mid- 

 dle cox£e separated. Legs slender, tibise not spinulose. 

 Tarsi slender, joints one to four nearly equal, fifth as 

 long as the three preceding united. 



AsEMOBIUS CtELATUS n. sp. 



Pale castaneous, moderately shining. Head slightly 

 concave each side, surface coarsely reticulate. Thorax 

 broader than long, the disc convex along the middle, sides 

 laminate lateral margin broadly arcuate, subangulate and 

 obliquely narrowed behind the middle, edge coarsely ser- 

 rulate, disc with two feeble cost^ near the middle which 

 are bifurcate posteriorly, surface with very coarse rather 

 closely placed umbihcate punctures. Elytra conjointly a 

 little wider than long, side margin acute and crenulate, 

 disc with stride of coarse punctures wider than the inter- 

 vals, the third and seventh intervals elevated the former 



