CETONIIN/E 393 



prothorax only three-fourths as wide as the elytra, subquadrate, 

 with feebly converging, strongly serrate sides, more elongate and 

 with rather more converging sides in the female, the surface with 

 close rounded annuli, bearing very coarse pale scales, darker and more 

 lineate medially, the canaliculation broad, deeply concave anteriorly, 

 where it is bordered by high sharp carinae, evanescent posteriorly, 

 the disk with a posteriorly oblique impression at each side medially; 

 elytra a fourth shorter than wide, parallel, with feebly arcuate sides 

 and a sublateral obtuse ridge as in the preceding, the disk broadly 

 flattened, feebly concave near the ridges, with numerous fine unim- 

 pressed double striae, the punctures close, bearing suberect black 

 scales, becoming pale at base, apex and in an imperfect median 

 fascia; pygidium only feebly convex, subtriangular, subsimilar in 

 outline in the sexes, with large scattered pale and some blackish 

 scales, the apical stylet of the female acuminate and as long as the 

 median line of the pygidium; abdomen very densely, at the sides 

 sparsely, the legs less densely, covered with large pale scales; hind 

 tarsi (cf) three-fourths longer than the tibiae, or ( 9 ) scarcely one- 

 half longer. Length (12 cf , i 9 ) 4.0-5.0 mm.; width 2.3-2.8 mm. 

 Pennsylvania, North Carolina, Kentucky and Indiana. [Trichius 

 canaliculatus Fabr. and variegatus Beauv.] . . . . canaliculatus Fabr. 



Form distinctly narrower, the size still smaller, the body more depressed, 

 that is: thinner in a vertical sense; color pale red-brown, rather 

 shining; head smaller, not half as wide as the prothorax, the clypeal 

 sinus still broader; prothorax three-fourths as wide as the elytra, 

 the sides moderately converging from base to apex and subevenly, 

 rather strongly arcuate, finely, sharply serrulate; surface with small 

 and shallow, distinctly separated punctures, the anterior broad 

 groove with acute and moderately elevated sides, obsolete basally; 

 near each side, at about the middle, there is a large rounded fovea; 

 pale scales suberect and large laterally, more slender medially, 

 especially in the female; elytra much abbreviated, parallel, with 

 broadly rounded external apical angles, the sublateral ridge much 

 less evident than in the preceding, the disk flat, with small shallow 

 close-set annuli, the fine feeble double striae very uneven; scales and 

 hairs suberect, bristling in single series along the striae, less narrow 

 and more squamiform at base, in a very imperfect transverse median 

 line and along the apex, but nowhere so broad and conspicuous as in 

 canaliculatus; pygidium nearly as in the latter, rather convex and 

 with some slender scattered scales in the male, flatter, rather smaller, 

 with similar small annuli but with only a few very short squamiform 

 hairs in the female, the apical stylet of the latter a little shorter than 

 the median line of the pygidium and relatively broader basally 

 than in the preceding species; tibiae broader, the hind tarsi not quite 

 so long and thicker. Length (2 cf, I 9) 3.7-4.4 mm.; width 2.0 

 2.35 mm. Louisiana (Vowell's Mill), Leng minutus Csy. 



4 Female piceous-black, only feebly shining, the last two dorsal seg- 

 ments of the abdomen more shining and rather densely punctured, 

 the unique type almost entirely deprived of vestiture, the few re- 

 maining scaly hairs black; head coarsely punctured, the vertex 



