426 WILLIAM G. DIETZ, M.D. 



form hereafter described as dkturbatus, a quite distinct species. The 

 angulated band is interrupted on the fifth interspace in most speci- 

 mens. LeConte described the front as concave, it is such in some 

 specimens, flattened or even some\A'hat convex in others. It is distin- 

 guished from all the other members of this group by its broader 

 form and the deeply notched anterior thoracic margins. 



C consaiigiiineus n. sp. PI. xiii. fig. 23.— Oblong oval, depressed, pitchy 

 black, legs rufous, above rather densely clothed with brown scales, a — '^ — basal 

 spot and an oblique lateral spot on the elytra of white scales, underside as in 

 angulatus. Beak as long ( '^ ), or a little longer { 9 ) than the prothorax, curved, 

 slender, cylindrical, finely punctured 'and striate, feebly shining near the apex, 

 scrobes and antennae as in the preceding, the latter slender, inserted two-fifths 

 from the apex ( % ), or a trifle beyond the middle ( 9 )• Head coarsely punctured, 

 front flattened or slightly concave, squamous; prothorax one-half wider than 

 long, strongly narrowed from base to apex, deeply constricted behind the apical 

 margin, sides convergently rounded from the base, ocular lobes less prominent 

 than in angulatus, lateral tubercles transverse, not prominent, curved, marginal 

 line in front ill-defined, dorsal channel entire, surface coarsely punctured, channel 

 and sides clothed with pale yellow scales, less conspicuous than in the preceding 

 species; scutel small, glabrous. Elytra a little wider at the base than the pro- 

 thorax, humeri obliquely rounded, longer than wide, sides feebly rounded, slightly 

 narrowed posteriorly, strige fine, superficial, punctures concealed by a row of 

 scales, interspaces flattened, the lateral spot extends from the ninth to the sixth 

 interspaces inclusive, the basal spot consists of a spot on the base of the sutural 

 interspace and a short line on the second jointed to a short subtransverse line on 

 the third and fourth interspaces, some scattered white scales on the declivity ; 

 pygidium coarsely punctured, scaly, underside densely punctured. Legs stout, 

 femoral tooth very small, acute, anterior and middle tibise short and stout, 

 widened to the apex, the latter rounded, po.sterior tibife a little longer and a little 

 more slender, thighs and tibia; indistinctly annulate with white scales, tarsi as in 

 angulatus, but a little stouter. Length 2.5-2.7.5 ram. ; 0.10 0.11 inch. 



% . Last ventral segment with superficial and ill-defined fovea, libipe not un- 

 guiculate. 



Hab. — Nevada. Three specimens in Dr. Horn's coll. 



A distinct species, similar to angulatHH, though less robust ; elytral 

 ornamentation very similar, ascending branch absent, the transverse 

 line on the third and fourth interspaces is nearer the base ; also re- 

 sembles the next species in general a[)pearance, but differs in the 

 stout tibi;e and the conspicuous marking at tlie ba.-^e of the elytra. 



C <lif*liirl»aliis n. sp. — Oblong oval, dark piceous. above thinly clothed 

 with sniall. pale scales, scales on the underside round, grayish white, not crowded. 

 Beak slender, (Uirved, a little longer than the prothorax in the male, one-lialf 

 longer in tiie female, punctured throughout, more finely in the female, striate in 

 its basal half, scrobes and antennae as in the preceding species, the latter inserted 

 two-fifths from the apex ( % ), or at the middle ( 9 )■ Head den.sely ])unctured ; 

 prothorax wider than long, strongly narrowed in front, rounded on the sides i\nd 



