214 CALIFORNIA ACADEMY OP SCIENCES. 



ii. Ochthebius costipennis, sp. nov. 



Piceous, not at all bronzed, legs brown. Outline and sculpture of 

 thorax nearly as in 0. recius, except that the discal foveas are connected 

 by an impressed line. Elytra deeply striate, the punctures large and 

 closely placed, intervals very narrow and strongly costiforin throughout. 



Length, slightly more than 1 mm. 



One example taken by the author at Ventura. 



No fuller description of this singular specimen is 

 needed, as it agrees in all respects except size and 

 sculpture, as noted, with 0. rectus. I would not have 

 ventured giving this specimen a name, relying solely 

 on my own judgment, as it seemed possibly an aberrant 

 0. rectus; but Mr. Frederick Blanchard, to whom the 

 specimen was sent, returned it as " 11. sp. near 0. 

 discretus;" and Mr. Liebeck, after carefully comparing 

 it with Dr. Horn's material, wrote " There is nothing 

 like it in the collection." I have seen scores of 0. rectus, 

 but have never seen a specimen approaching this one 

 in size or character of elytral intervals. It should fol- 

 low 0. rectus in a cabinet arrangement. 



12. Tropisternus salsamentus, sp. nov. 



This name is proposed for a species related to T. sub- 

 Icevis and T. calif ornicus . Though probably nearer to 

 the former, it can best be described by a comparison 

 with the more familiar T. californicus. 



The form is a little more elongate than in T. californicus, punctuation 

 more noticeable, but not dimming the surface lustre which is more or less 

 greenish in certain lights; legs entirely yellow except a piceous pubescent 

 area at base, and the middle and hind tarsi, which are brown. The finely 

 punctate pubescent area occupies in T. salsamentus about the basal fourth 

 of the hind femora, in T. sublcevis the basal third, and in T. californicus 

 is confined to the extreme base. The femora are more slender, more 

 nearly parallel, and more sparsely punctate than in T. californicus. The 

 mentum is not obviously more densely punctate in the male, and the 

 tooth of the inner claw of the middle and hind tarsi (male) is usually 

 blunt at tip instead of acute as in T. californicus. The outer claw of 



