428 Mr. J. 8. Baly’s Descriptions of 
grooves strongly marked; eyes entire, prominent; antennz 
scarcely more than half the length of the body, slender, their 
outer half black, five outer joints slightly thickened. Thorax 
rather longer than broad, sides rounded, notched at the base, 
slightly converging from just behind their middle to the apex, la- 
teral border narrowly margined, finely crenulate; upper surface 
closely covered with numerous short transverse raised striz. 
Elytra coarsely rugose-punctate, each with eight or nine longi- 
tudinal rows of tubercles, the rows absent from the basal por- 
tion of the inner disc near the suture, and from the transverse 
portion of the elytron immediately below the basilar space; to- 
wards the apex of the elytron the tubercles form short longitu- 
dinal costes. Thighs armed beneath with a short acute spine. 
Genus Cortasposoma, Laporte. 
Colusposoma igneicolle. 
Late oblongum, convexum, viridi-zeneum; tarsis antennisque 
(his basi fulva exceptis) piceis ; thorace aureo; elytris late 
metallico-ceeruleis, margine laterali suturaque viridi-zneis. 
Long. 24 lin. 
Hab. Siam. 
Head punctured, impressed between the upper portion of the 
eyes with an ill-defined semicircular groove ; labrum and a space 
on the inner orbit aureous, a small patch at the base of either an- 
tenna bright metallic blue; antenna nearly equal to the body in 
Jength, slender, filiform, four lower joints obscure fulvous, stained 
on their upper surface with piceous, basal joint stained above 
with a fusco-zneous patch. Thorax at the base nearly three 
times as broad as long ; sides rounded at the base, obliquely con- 
verging and slightly rounded from behind their middle to the 
apex, lateral margin reflexed ; upper surface deeply but not very 
closely punctured. Scutellum semiovate, igneo-zeneous. Elytra 
nearly four times the length of the thorax, sides parallel, apex 
broadly rounded; above convex, transversely depressed below 
the basilar space, deeply but not coarsely punctured, the punc- 
tures arranged in ill-defined longitudinal striz ; on the outer disc 
in front are numerous coarse strongly-raised irregular transverse 
rug; on the hinder portion of the outer disc, as well as near 
the suture, are a number of elevated longitudinal coste. 
Colasposoma fulvicorne. 
Late ovatum, convexum, subtus czruleo- aut violaceo-eneum, 
supra viridi-aneum ; antennis pallide fulvis, articulis duobus 
