NOKTH AMERICAN COLEOFTERA. 121 



closely punctured ; a well-marked median carina with a moderately impressed 

 line about the insertion of the antennaj, substriato each side; opaque in the 

 male, feebly shining in its distal half in the female; scrohes commencing one- 

 third from the apex; basal tufts prominent, incision deep Head very finely 

 rugulose, front punctured, scaly ; first joint of funide fully one-half longer than 

 these<;ond, the latter less than one-half longer than the third ; clava not strongly 

 elongate, ovoid-elliptic, densely pubescent. Prothorax transverse, strongly nar- 

 rowed iu front, broadly but not distinctly constricted at the apex, strongly 

 rounded on the sides behind the middle, slightly narrowed posteriorly; surface 

 densely and rather coarsely punctured, punctures elongate, subconcentric, the 

 intervening ridges giving the appearance of irregular rugic, a smooth, narrow 

 median line before the middle more or less distinct, two distant discal vittfe and 

 sides white; scutel very small, glabrous. Elytra but little wider at the base 

 than the prothorax, broadlj' ovate, sides broadly rounded to near the ape.x, strise 

 deep, punctures distinct, humeri quite prominent, rounded, interstitial setse 

 consisting of small, suberect scales ; humeri, basal line on the third interspace 

 and irregular spots and wavy lines on the disc white. Prosternum distinctly 

 channeled, antecoxal ridges distinct. Legs rufopiceous, not very slender; tibiae 

 feebly biemarginate and setulose within, anterior curved outward, their hook 

 quite prominent, middle and posterior feebly armed; tarsi stout, pubescent; 

 claws stout, small, connate one-half their length. Length 2.25 — 2.75 mm. ; 0.09 — 

 O.H inch. Plate vii, figs, la and 5a. 



Hab. — District of Columbia, Pennsylvania, L. Superior, Dakota. 



A very distinct species ncfi readily confounded with any other of 

 this tribe. The pale scales on the upper surface are larger than the 

 darker, but vary greatly in size and distribution. In one of Mr. 

 Ulke's specimens no difference in size is discoverable. 



DES.^IOKIS Lee. 



While the separation of this genus from Smicronyx as established 

 by LeConte on the relative length of the first and second joints of 

 the funicle would no longer be valid, its retention i.s fully warranted 

 by a due appreciation of characters heretofore overlooked, and wiiich 

 are set forth in the synoptical table of genera. 



The beak, while comparatively robust, nearly straight, punctured 

 and opaque in the males, attains its greatest development in length 

 in the females, where it is very slender, filiform and polished in its 

 entire length. Antennai long and slender, especially in the females, 

 the second joint of funicle longer than the third in all, except /«vi- 

 eans; the club is small and entirely pubescent in some, or the basal 

 joint glabrous in others. The eyes are more widely separated be- 

 neath, except fioridcmus, than elsewhere. Prothorax narrowed an- 

 teriorly and constricted at the apex in most of the species, generally 

 with a smooth median line. Prosternum never very short in front 



TEAN8. AM. ENT. SOC. XXI. (16) APRIL. 18SM. 



