250 AMERICAN COLEOPTERA. 



tliird. riftl) joint visibly shorter tlian the tliiid, eleventh not longer than the 

 tenth. Prothorax subconical, the sirles convergent and nearly straight, interrup- 

 ted by a feeble prominence at apical third, basal and apical constrictions very 

 slight at sides, more evident in the form of tolerably well defined impressions at 

 middle, base and apex narrowly sharply margined, hind angles slightly produced. 

 Elytra obviously but not strongly narrowed behind, the apices dehiscent and 

 rather narrowly subsiniiately obliquely truncate, the outer angle moderately 

 acute; disk with two tine cost* extending from the base to about the apical 

 sixth, the inner one fairly well marked, the outer one ill defined. Length 18 mm. 



Described from a single female specimen taken by the writer at 

 Lake Tahoe. The fiftli ventral is truncate with rounded angles. 

 This species should stand in the first division of the genus, but may 

 be distinguished from any known to me by the conical rather than 

 companulate thorax, the hind angles but slightly produced. Add 

 to this the elytral cost?e, the very fine punctuation, and the blackish 

 pubescence of the prothorax, which is not larger than that of the 

 elytra, and we have a combination of characters which should make 

 its recognition easy. 



Leptiira barberi n. sp.— Entirely black, head and prothorax dull from 

 the density of the punctuation, elytra shining. Pubescence fine, fuscous, very 

 short and inconspicuous on the elytra, longer and erect on the prothorax. Head 

 elongated anteriorly, tempora moderate, a little oblique. Antennse slender, fili- 

 form and cylindrical, as long as the body ( % ), fourth joint three-fourths as long 

 as the third, the latter subequal to the fifth, eleventh not appendiculate. Pro- 

 thorax subparallel in basal two-thirds, thence narrowed to the apical constric- 

 tion ; base broadly bisinuate, margined but not constricted or impressed; hind 

 angles small, acute, abruptly produced; surface very densely punctate, a short 

 smooth impunctate line behind the middle. Elytra nearly twice as wide as the 

 basal width of the thorax (exclusive of the angles), strongly narrowed posteriorly, 

 the tips rounded and dehiscent; disk strongly convex at base, the entire surface 

 with not very coarse sharply impressed punctures, which are distant from one to 

 two times their own diameters. Beneath with rather longer grayish pubescence. 

 Length 8-9 mm. 



The type is a male collected at Fieldbrook, Humboldt County, 

 California, by Mr. H. S. Barber. With it I have associated exam- 

 ples taken on the Kern River (elevation 6000 feet) by Mr. Daggett, 

 and in western Nevada by Prof. Baker. 



The fifth ventral segment is nearly similarly narrowly truncate in 

 both sexes, the female difl^ering from the male only in the shorter 

 antennae and more robust form. 



Barberi should probably enter the first group (Leng's Aa) of the 

 genus, but dififers from anything therein by the relatively narrow 

 prothorax, resembliiig certain Acnumps in this respect. 



