320 Mr. E. Saunders’ Catalogue of Buprestide 
Genus Tracnys, Fabr. 
Trachys fasciunculus, n. sp. 
T. capite cupreo, rufipubescente ; thorace pubescentia rufa, 
crinibus albis commixta; elytris pubescentia rufa brunnea 
albaque commixta, fasciculis duobus comarum brunnearum 
prope suturam positis: Subtus czeruleus. 
Head coppery, deeply excavated between the eyes, covered 
with a reddish-brown pubescence. Thorax twice and a-half as 
broad as long, anterior margin emarginate, sides nearly straight, 
base triangularly lobed; surface covered with a reddish pu- 
bescence mixed with a few white hairs. Elytra scarcely longer 
than broad, shoulders slightly wider than the thorax, sides gra- 
dually converging to the apex; surface covered with brown and 
red hairs intermingled with white, with two wavy bands of white 
near the apex, and near the suture on each elytron are two fasci- 
cles of long brown hairs, one close to the base, the other near the 
apex. Beneath shining blue, punctured, and covered with scat- 
tered white hairs. 
Length 23 lines ; breadth 13. 
Laas. 
Oncomaa,* n. g. 
Caput minutum; epistomate emarginato; antennis brevibus, 
serratis. Thorax postice latissimus. lytra valde convexa- 
Tibie dilatatee. 
Head small; epistome slightly emarginate ; antennee short and 
stout, the first joint pyriform, the second, third and fourth very 
short and rounded, the remaining portion serrate and slightly 
dilated ; eyes slightly prominent. Thorax very wide behind, 
posterior angles slightly enclosing the shoulders of the elytra. 
Elytra very convex, gradually converging to the apex, shoulders 
rather prominent. Legs large, tibiz dilated, the outer margin in 
the form of an arc of a circle ; tarsi small, somewhat dilated. 
This genus is most nearly allied to Pachyscelus of Solier, but 
its very convex elytra, and at the same time elongate form, I think 
sufficiently separate it from that genus. 
* "Oyxos, a lump, 60005, like. 
