NORTH AMERICAN COLKOPTERA. 199 



This insect has been twice since described as F. viurina Crotch, 

 Proc. Acad. 1873, p. 53, and F. lurida Lefevre, " Catalogus Eumol- 

 pidarum," Mem. Liege, 1885, p. 76 (separate). 



Occurs from the Middle States to Dacota, Florida and Texas. 



F. lonsipes Mels., Proc. Acad, iii, p. 169; Crotch, Proc. Acad. 1873, p. 34; 

 viticolns Uhler, Proc. Acad. 1855, p. 418. 



Resembles the preceding in form, but usually smaller. Color 

 piceous, surface clothed with rather coarse fulvous pubescence. 

 Punctures of the elytral striae coarse, deep and closely placed, the 

 intervals flat, with punctures not densely placed, but rather roughly 

 muricate. The legs are black, the femora at base usually paler, 

 sometimes the tibiie are pale. 



F. cana n. sp. — Black, subopaque, uot densely clothed with cinereous hairs, 

 forming a denser line on the median line of the thorax. Anteunse piceous, 

 joints 2 — 4 pale. Head very coarsely uot densely punctured. Thorax subcy- 

 lindrical, slightly narrower in front, sides arcuate, disc regularly convex, coarsely 

 but not densely punctured. Punctures of elytral rows coarse, but not closely 

 placed, intervals flat, the punctures not close and feebly muricate. Body beneath 

 black, sparsely pubescent on the abdomen, more densely on the sternal side 

 pieces. Length .22 inch.; 5.5 mm. 



This species has a form similar to the other two, and may be 

 known from longipes by the generally finer punctuation of the entire 

 surface and by the fine cinereous hairs of the surface. 



Occurs in Texas. 



XANTHONIA Baly. 



This genus was founded by Dr. Baly on a species (iStevendi) which 

 had previously been named by Melsheimer. There is, however, one 

 error in the generic description. The front thighs are said to be not 

 toothed. In the males there is always present a small conical eleva- 

 tion at the middle of the front thighs in the position in which a tooth 

 usually occurs. Therefore, the difference between the present genus 

 and Tricotheca is narrowed to the feeble one of the antennae being 

 as long as the body in the latter genus, and about half as long as the 

 body in Xanthoma. At all events our so-called Tricotheca must be 

 considered a Xanthoma, notwithstanding the well-marked tooth on 

 the front thighs. 



In Biol. Cent.-Amer. vi, |)t. 1, Jacoby describes and figures a 

 Xanthoma with toothed femora. Possibly our vagans has been de- 

 scribed from Mexico. 



The species are not readily separable, the following note will, 

 however, assist : 



TRANS. AM. ENT. SOC. XIX. JULY, 1892. 



