Mr. J.S. Baly on the Classification of the Eumolpide. 151 
fifth, however, being each somewhat shorter than the fourth, the sixth 
and seventh each also rather shorter than the fifth, equal, the eighth and 
following joints again shorter, nearly equal, the eleventh acute, six 
terminal joints slightly thickened ; anterior edge of labrum emarginate. 
Eyes prominent, their inner margin obsoletely sinuate ; mentwm with 
its anterior border angularly notched; terminal joint of palpi ovate, 
attenuated towards the apex. TZhorax subcylindrical, side margin ob- 
solete, sides narrowed at base and apex, causing the middle portion to 
form an ill-defined angle, , Legs subelongate ; anterior pair of thighs 
strongly incrassate and flattened, armed beneath with a stout tooth, the 
two hinder pairs less thickened, also armed beneath with a smaller tooth. 
Type, Trichotheca hirta, Baly (huj. op. i. p. 26). Northern India. 
The slender filiform antenne and the peculiar form of the anterior 
thighs, together with the silky pubescence, separate this genus from 
all others. 
Genus Xantnontia, Baly. 
Body oblong, subcylindrical, covered with fine hairs or hair-like scales. 
Head exserted, perpendicular ; antenne rather more than half the length 
of the body, slender, subfiliform, first joint incrassate, second moderately 
thickened, shorter than the first, third and three following nearly equal, 
slender, each longer than the basal one, remaining joints scarcely 
shorter than the preceding, slightly thickened; eyes entire; mentum 
with its anterior margin concave; terminal joint of mazillary palpi 
ovate-acuminate ; epistome often not separated from the face by a sutural 
line, its anterior margin truncate. Thorax subcylindrical, transverse, 
its upper surface slightly flattened, the lateral border obsolete. Elytra 
much broader than the thorax, their sides parallel, their surface closely 
punctured, the punctures generally arranged in striz. Legs moderate ; 
thighs slightly thickened, sometimes armed beneath with a small tooth ; 
tbie simple ; basal joint of tars? shorter than the following two ; claws 
bifid, the inner tooth incurved. Prosternum oblong-elongate, its anterior 
margin continuous with that of the episternum. Mesosternwm oblong. 
Type, Xanthonia Stevensi, Baily. Canada. 
The shape of the thorax divides the present genus from Neculla, 
the nearest allied form. 
Three species are known to me from North America, and one from 
Brazil. 
Xanthonia Stevensi, Baly. 
X. oblong, subcylindrical, fulvous, subnitidous, covered with fine con- 
colorous hairs, eyes and apex of jaws black.—Long 12 lin. 
Hab. Canada. 
Head short, subrotundate, closely punctured ; epistome concave, face im- 
pressed with a longitudinal groove. Thorax transverse, nearly twice 
as broad as long, sides regularly rotundate-ampliate ; surface entirely 
