AMERICAN COLKOPTEKA. 443 



femora feebly clavate, tibise a little wick-r towards the apex, tarsi stout, first joint 

 a little longer, second short, third broadly bilobed. fouith projecting about the 

 length of the preceding joint, claws armed with a long, acute tooth, almnst bifid. 

 Length 1.7 mm.; 0.07 inch. 

 % . Ventral fovea ill-defined. 



Hab. — New iNIexico, N. Illinois. Mr. A. Bolter's and my own 

 coll. The scales on the upper surface are easily rubbed oif, giving 

 the insect a very hirsute appearance, similar to puslllus. One of 

 Mr. Bolter's specimens has the elytral interspaces more flattened and 

 a scutellar spot of white scales. 



C coiivcxicollis Lee PI. xiv, figs. 30rt, 31c.— Oblong, pitchy black, legs 

 rufo-piceous, above not densely clothed with large, pale, appressed scales, inter- 

 mixed with a coarse, suberect, squaniiform pubescence, underside not densely 

 clothed with oval or elongate oval, grayish white scales, summit of mesosternal 

 side pieces densely scaly. Beak curved, more or less shining, punctured through- 

 out, more finely towards the apex, striolate and sqiiamose near the base ; antennse 

 inserted just before the middle ( "J) ), or two-fifths from the base ( 9 ). slender, 

 outer joints of fuuicle wider, club large, oval, obtuse, the first joint forming one- 

 half its mass. PJyes completely concealed in repose. Head densely punctured, 

 scaly, front slightly concave ; prothorax one-half wider than long, strongly 

 rounded on the sides, constricted at the apex, base nearly two-fifths wider than 

 the former, apical margin elevated, not emarginatc, ocular lobes moderate, lateral 

 tubercles small, acute, dorsal channel distinct, impressed, base bi-einarginate, 

 surface coarsely punctured, a median line and one each side interrupted bv t>lie 

 lateral tubercle, of white scales ; scutel minute, glabrous. Elytra oblong, a little 

 wider at the base than the prothorax, feebly rounded on the sides, slightly nar- 

 rowed for three-fifths their length, then rapidly narrowed to the apex, strise 

 coarse, closely punctured, punctures more or less concealed by the scales, inter- 

 spaces convex, roughened, finely muricate on the declivity, a scutellar sjiot. not 

 well defined, of condensed scales; ])ygidium densely sculy, legs and tarsi slendei*. 

 thinly pubescent, first two joints of tarsi somewhat elongate, third short, not 

 broadly bilobed, fourth joint very long, equaling in length the two preceding 

 joints ; claws with a short, but acute, basal tooth. Length 2.0 2.5 mm. ; 0.08- 

 0.10 inch. 



% . Ventral fovea apical, transverse. 



Hab. — Colorado, Idaho, Wyoming, New Mexico, Arizona, Utah, 

 Texas. 



Numerous specimens. Dr. LeConte describes the antennne as tes- 

 taceous, the elytral interspaces as finely alutaceous, these characters 

 I have not found in any specimen ; nevertheless, I have no doubt of 

 this being the species described by that author as convexicoll'is. 



The appearance of this species varies, according to the presence 

 or absence of the large scales on the upper surface, similar to the 

 two preceding species ; from these, as well as all the other species of 

 this group, it is distinguished by the short, obtu.se, antennal club, 



TRAN.S. AM. ENT. SOC. XXIII. DECEMBER, 1«»6 



