284 
GEO. H. HORN, M. I). 
8. — Pygidiuni with a projecting carimi 9. 
Pygidiiun without a projecting carina 15. 
9. — Elytra witli a well defined co.sta iliacer. 
Elytra without distinct costa.'. 10. 
10. — Front deeply impressed ; head and thorax coppery red, elytra black ; hind 
angles of thorax not carinate. 
Pro-, meso- and metapleiirge and coxaj densely pubescent »litlax. 
Pleurae and coxae not pubescent vitf atocollis. 
Front convex, or feebly impressed ; color uniform 11. 
11. — Sides of thorax with yellowish iiubesceuce, elytra with a vitta of similar 
color; hind angles of thorax not carinate bilineatiis. 
Thorax and elytra without pubescent spaces 12. 
12. — Elytra with more or less evident pubescent spots, or with small, densely, 
finely punctured spaces indicating them 13. 
Elytra without pubescent spaces 14. 
13. — Last ventral segment oval at tip; second segment only, of male, feebly 
grooved. 
Apices of elytra very acute; underside of body not conspicuously pu- 
bescent; scutellum not carinate iievadeiisis. 
Apices of elytra of usual form ; sides of body beneath conspicuously 
clothed with dense white pube.sceuce ; scutellum transversely cari- 
nate iii veivtMitris. 
Last ventral segment obtuse or truncate; tbe first two ventrals of male 
grooved grail iilatiis. 
14. — Last ventral segment obtuse or truncate. 
First ventral of male flat, second grooved peilSiiK. 
First and second ventrals of male with a smooth and deep groove. 
Blaiieliardi. 
Last ventral segment oval at tip. 
Hind angles of thorax carinate in both sexes; first ventral of male broadly 
grooved, the second more deeply, the groove narrow and smooth. 
aiixiu!^. 
Hind angles of thorax not carinate, at most an obtuse elevation ; first 
ventral of male nearly flat, the second with a deep smooth groove. 
15. — Thorax with a deep and broad, somew’hat ova! depression; front concave. .16. 
Thorax with, at most, a simple, straight, median impression 17. 
16. — Elytra costate and with pubescent spots; hind angles of thorax feebly 
carinate. 
Scutellum concave, without transverse carina; elytra with a well marked 
costae, nearly entire C’ouesii. 
Scutellum transversely carinate; elytral costa feeble and not entire. 
(‘aval UN. 
Elytra not costate and without pubescent spots, hind angles of thora.x not 
carinate; scutellum not carinate; la.st ventral truncate. 
COIlCillllllN. 
17. — Suture between the first two ventrals plainly indicated at the sides; last 
ventral serrulate. 
Thorax grooved at middle; elytra ornate, wdth pubescent spots ; iiygidium 
obtuse H'alNiiigliaiiii. 
