AMERICAN COLEOPTERA. 411 



Hah. — Canada, Pennsylvania, Georgia, Oregon and Washington. 



Easily recognized by the form of the nietasternuni and its small 

 size. The mottling of the elytra is frequently indistinct ; when well 

 marked this species more nearly resembles xuhfrncidttis, but differs 

 abundantly by its much finer sculjjture and almost entire absence of 

 elytral asperities. 



FKI.EXOSO.IIUS sen. uov. 



A peculiar species, unlike any other of the present subtribe known 

 to me, forms the type of this genus. It very much resembles certain 

 forms of Pelenomus, from which, however, it differ? by the elongate 

 beak, the pectoral canal extentled upon the niesosternum and the 

 toothed claws. Beak elongate, somewhat stout, scrobes expanded 

 posteriorly, directed against the eyes, antennal funicle 7-jointed ; 

 prothorax wider than long, surface very untMjual, broadly and sharj)ly 

 depressed on the sides and in front, excavate between the prominent 

 and acute lateral tubercles and the lateral margin ; scutel minute, 

 glabrous. Elytra suddenly and much wider at the base than the 

 prothorax, not longer than wide, with tufts and crests of erect scales ; 

 pectoral canal deep, wider between the middle coxaj and extending 

 upon the niesosternum, mesosternal side-pieces wide, scarcely visible 

 from above ; second ventral segment shorter than the two following 

 segments together, prolonged at the sides, the third scarcely attain- 

 ing the lateral margin ; pygidium oblique, acutely margined, with 

 transverse elevated line for rece()tion of the elytral apex. Legs 

 long and slender, femora unarmed, posterior a little more robust, 

 tibise very slender, middle and posterior feebly emarginate above the 

 apex, tarsi long, third joint broadly bilobed, fourth shorter than the 

 two preceding joints together, claws armed with a strong tooth about 

 half as long as the claw ; surface densely scaly. 



Structurally, this genus is closely related to Auleatex, from which 

 it is distinguished by the great irregularity of the prothorax, the 

 tufts and crests of erect scales on tlie elytra and the dense scaly 

 vestiture. It is represented by a single species. 



P. cristatiiN n. s]). PI. xii, fig. 16. — Oval, dark piceous, legs a trifle paler, 

 anteuijaj testaceous, densely clothed with rather small, grayish white and brown- 

 ish scales, elytra with crests of erect seal-brown scales. Beak a little shorter than 

 the prothorax, gradually widened from the ba.se toward the apex, densely punc- 

 tured, pubescent, neither carinate nor striate; antennae inserted just beyond the 

 middle ( % ), first joint of funicle very stout, short, second slender, elongate, 

 joints 3-7 gradually shorter, outer joints not wider, club elliptoidal, acuminate. 



TRANS. AM. KNT. SOC. XXIII. NOVEMBKR. 1S96. 



