160 AMERICAN COLEOPTERA. 



Vnncorne.— The typical form above described occurs in Georgia and Florida, 

 and differs from all western representatives by the sparser, more hair-like vesti- 

 ture of the upper surface, and from Vnr. a, which it most resembles, by the pro- 

 thorax more widened posteriorly. 



Yur. rt.— Vestiture scaly, not very dense, scarcely different otherwise from the 

 typical form, except in form of thorax above alluded to. 



Hab. — Montana, Texas, New Mexico. 



Yar. 6.— Beak ( 9 ) more than twice as long as the prothorax ; first antennal 

 joint longer; eyes ( ? ) less prominent than usual. In all other forms the beak 

 ( 9 ) is less, usually much less, than twice the length of the prothorax, and the 

 eyes are not appreciably less prominent in the 9- The ^ is scarcely distin- 

 guishable from Var. a. 



Hab.— "'North -West Territory," Nebraska, Texas, Colorado. 



Var. c. — Vestiture very densely scaly; scales broader than usual; tarsi more 

 slender and with the claw joint a little longer than in the preceding varieties. 



Hab. — Arizona, California (Yuma). 



Specimens from Lower California are intermediate between typi- 

 cal varicorne and Va7\ a. 



78. A. alteriiatiini n. sp. — Form a little less elongate than in varicorne. 

 Beak moderately, strongly, nearly evenly arcuate; vestiture scaly, condensed on 

 alternate intervals of the elytra. The latter character is easily obscured if the 

 specimens are worn. (PI. V, fig. 5). 



So near varicorne tbat the above short diagnosis offers all that is 

 necessary for its recognition. 



I have seen many specimens, all taken by Mr. Wickham at 

 All)uquerque, New Mexico. 



79. A. coiitusuin Smith. — Black, moderately pubescent. Beak ( 9 ) rather 

 slender, fully as long as the head and prothorax, quite strongly arcuate, parallel, 

 a little widened at the tip, scarcely at all dilated toward the base, distinctly 

 punctate throughout, more finely and remotely above. First joint of antennse 

 very long, fully equal to the next three, second reaching the eye. Prothorax 

 slightly wider than long, widest a little behind the middle: sides rather strongly 

 arcuate: basal margin not at all expanded ; surface closely punctate, a little less 

 so toward the middle, leaving an ill-defined, median, impunctate line ; basal fovea 

 rather small. Elytra nearly one-half longer than wide; humeri rather strong; 

 sides noticeably divergent to behind the middle; intervals convex, a little wider 

 than the strise. Beneath sparsely punctate; meso and metasternal side pieces 

 clothed with white pubescence. Legs rather slender; claws strongly toothed. 

 Length 2.1 mm.: .085 inch. 



Ha b. — Dakota. 



I am indebted to the kindness of Mr. Henry Ulke for an oppor- 

 tunity to examine the unique type, which seems never to have been 

 duplicated. It is one of a very few species in which the thorax is 



