270 AMERICAN COLEOPTERA. 



less than one-third their length. Beneath with uniform whitish scales, which 

 are hroader than those above and closely placed, though as a rule not quite in 

 mutual contact. Beak ( % ) moderate, closely punctate at sides, substriate toward 

 the base, numerously squamo-setose almost throughout, the setae becoming more 

 hair-like apically. Antenna inserted just behind the apical third, funicle 

 6-jointed. Head closely punctate, not densely squamose with pale scales, vertex 

 carinate. Prothorax of the usual form, the sides subparallel for a short distance 

 at base, median groove fine and shallow, lateral tubercles small but distinct, sur- 

 face densely not coarsely punctate, scales narrow, numerous but distinctly sepa- 

 rated, directed toward the median line in front, radiating from a median spot 

 posteriorly. Femora with a small tooth; tibiae unguiculate in the male; claws 

 feebly toothed at base. Last ventral segment with a broad and rather deep fovea 

 in which the vestiture becomes hair-like, especially along its margins. Length 

 2.5 mm. 



Guniiisou County, Colorado; Baker. 



The 6-jointed funicle, toothed femora and toothed claws exclude 

 this species from any of the groups as limited by Dietz. It should 

 stand between the " subpubescens " and " angulatns" groups of this 

 author. 



Centorltynchiis tescorum n. sp. — Oval, i)iceous, legs rufous through- 

 out; upper surface rather densely clothed with short piliform scales, which are 

 not very closely appressed and are dark brown and yellowish-white or ashy in 

 color. The pale scales are condensed in the pronotal channel and along the 

 elytral apices; and there is an elongate sutural spot of dense white scales, occu- 

 pying the sutural interspace only and between one-fourth and one-fifth the 

 length of the suture. Under surface with closely placed whitish oval scales, legs 

 clothed with coarse whitish hair or piliform scales. Beak not very slender, finely 

 punctulate apically, nearly smooth above at tip; more coarsely punctate and 

 feebly substriate at base ; antenna? inserted at the middle { % ), or just behind the 

 middle ( 9 ), funicle 6-jointed. Head densely punctate and closely set with pale 

 yellow piliform scales, front scarcely at all concave, occiput (marinate. Prothorax 

 scarcely one-third wider than long, sides subparallel basally, strongly convergent 

 anteriorly, the apical constriction moderate, apical margin feebly elevated, punc- 

 tuation dense but not coarse, largely concealed by the vestiture, whicn is dark 

 brown above, with a pale line in the not very deep median channel, and some- 

 times a few scattered pale scales on the disk. Elytra about two-fifths wider than 

 the prothorax. Striae not deep, intervals wide, nearly flat, vestiture mottled on 

 the disk, dark scales nearly wanting at apex. Femora not toothed ; claws with 

 a very small basal tooth. Length 2.5-3 mm. ; width about 1.7 mm. 



Western Nevada (Ormsby Co., Baker); Eastern California, Inyo 

 Co., Bridgeport (Wickham) ; Big Pine and Independence (Fenyes). 



The 6-jointed funicle, simple femora and toothed claws form a 

 combination which excludes this species from all of the groups indi- 

 cated by Dietz. It may be placed betw^een the " squamatus " and 

 " septentrionis " groups of this author. 



