222 CALIFORNIA ACADEMY OF SCIENCES. 



slightly longer than wide, the latter a little wider than long, Prothorax very 

 slightly narrower than the head, one-third longer than wide, widest at one- 

 fourth the length from the apex; sides thence extremely feebly convergent 

 and nearly straight to the base, and very rapidly so and very feebly sinuate 

 to the apex which is very narrow; anterior angles obtuse, slightly rounded; 

 posterior rather broadly rounded; base broadly and very feebly arcuate; disk 

 transversely and feebly convex, excessively minutely punctate; punctures 

 about one-half as wide and more than twice as distant as those of the head, 

 slightly more sparse in the middle, where there is a narrow impunctate line, 

 and toward base a very fine, feeble and obsolete median stria. Elytra slightly 

 wider than the prothorax; sides nearly parallel, feebly arcuate posteriorly; 

 together broadly, angularly and very feebly emarginate behind; disk one- 

 fourth longer than wide, slightly longer than the pronotum, very feebly im- 

 pressed on the suture toward the base, extremely finely and rather feebly 

 punctate; punctures evenly distributed, scarcely as sparse as those of the 

 pronotum, distinctly asperate; suture finely margined with an elevated line 

 which is much finer near thescutellum. Abdomen at base slightly narrower 

 than the elytra and slightly narrower than at the apex of the fourth segment, 

 rather strongly convex, excessively finel}^ densely and subasperately punc- 

 tate; first four segments equal in length, the fifth one-half longer. Legs 

 rather short and robust; joints of the posterior tarsi decreasing very grad- 

 ually and uniformly in length, first slightly louger than the second and 

 shorter than the fifth. Length 2.5 mm. 



Texas; (El Paso 2). 



The type is a male, the sixth ventral segment being nar- 

 rowly and deeply emarginate; emargination very small, dis- 

 tinctly deeper than wide, sides nearly parallel and straight, 

 bottom broadly ronnded. In the female the sixth segment 

 is broadly and feebly angulate, the apex being broadly 

 rounded. 



L. bicolor u- sp. — Slender; sides parallel; moderately convex; pale rnfo- 

 testaceous, four basal segments of abdomen piceous-black, last two slightly 

 paler; elytra clouded with piceous at base near the scutellum; antenu?e 

 throughout and legs pale rufo-testaceous, the latter slightly more flavate; 

 pubescence extremely short and fine, rather dense on the elytra and abdo- 

 men, i/earf slightly longer than wide; sides behind the eyes parallel and 

 very feebly arcuate; base truncate; angles narrowly rounded; eyes moderate, 

 slightly prominent, on ttie sides just before the middle; front transversely and 

 evenly convex, minutely reticulate, extremely minutely and rather densely 

 punctate; punctures more dense toward the eyes, less dense along the middle; 

 antennas one-half longer than the head, second joint slightly longer and more 

 robust than the third, joints two to five longer than wide, six to ten shorter, 



