COLEOPTERA. 
67 
rows of from seven to nine generally rather large rounded and flattened tubercles, with 
scattered minute granules on the interspaces, the apes being more closely tubercled; the 
margins rather closely set with smallish, oblique, pointed setiferous, tubercles ; the carina 
which traverses the epipleura is tubercled at base and apex and minutely denticulate between ; 
the upper portion of the epipleura is studded (especially on its upper edge) with setiferous 
tubercles, which are largest at the apex ; the lower portion is sparsely minutely granulose • 
underside and legs densely tomentose ; four hind tibiae hispid, not fringed outwardly with 
long hairs ; front tibiae strongly triangulate, the outer edge irregularly shortly spinose ; hind 
tarsi not compressed, and with a few longish hairs outwardly ; the first joint as long as the 
last : inner spur of the four hind tibiae nearly twice the length of the outer. 
Length 7| lines. 
Yangihissar. 
The following four species of Pterocoma form a distinct group in the genus, and are 
distinguished by the third joint of the antennae much elongated ; the prosternum protuberant 
in the front, leaving a more or less triangulate open space between it and the head 1 2 ); its pro- 
cess enormously produced, sometimes nearly entirely overlapping the mesosternum ; the elytra 
have each three (with the exception of Ft. semicarinata) crenated, or tubercled, costae, besides 
the marginal, the third uniting with the marginal just behind the shoulder. 3 They all have 
the true Pterocoma habit ; and the four hind tibiae are rounded. 
Pterocoma tibialis. 
Black, somewhat nitid ; the four hind tibiae distinctly ruf escent : antennae slender, pilose, and 
setose : legs also slender, spinose, and pilose : labrum notched in the middle of fore margin : head 
feebly punctured and pilose: antennary orbits reflexed, rounded anteriorly: prothorax convex 
slightly sinuately emarginatein front; the angles acute and prominent; base strongly sinuate,* 
the angles small and somewhat outwardly directed, sides feebly rounded; finely, especially on 
the disc, and sparsely tuherculate, the tubercles erect, pointed, and setiferous : scutellum 
minute : elytra with a more or less strong depression behind the scutellum ; the first costa 
distinctly continued along the base to the scutellum ; the intervals between the costie nearly 
smooth, minutely remotely granulous, feebly concave, with a few long decumbent hairs'- 
epipleurse a little rougher, finely rugose granulate, the hairs shorter and denser : marginal 
costa closely set with long pointed teeth: prosternal process coarsely corrugated. 
Length 4f to lines ; width of elytra across the middle 2f to 3§ lines. 
Neighbourhood of Sanju. 
Pterocoma serrimargo. 
Smaller than the preceding, dull brownish black : four hind tibiae not distinctly rufescent 
Antenna) shorter and stouter : labrum not notched in middle of fore margin : apex of protho- 
rax not at all sinuate, the angles scarcely so prominent ; the base not so strongly sinuate as in 
1 Lacerdaire has given the name of “ mentonnibre ” to this form of prosternum. 
2 The same is found in Lasiostola pubescens t Pall. 
