138 LONGICORNIA. 
2, Aithomerus asperulus. 
Aithomerus asperulus, White, Cat. Long. Col. Brit. Mus. i. p. 376 ‘, 
Hab. Nicaragua, Chontales (Belt, Janson).—Soutn America, Venezuela!. 
STETRASTOMA. 
Steirastoma, Serville, Ann. Soc. Ent. Fr. 1835, p. 24; Lacordaire, Gen. Col. ix. p. 747. 
Sixteen species of this well-marked genus are known, all Tropical-American. They 
are amongst the commonest Longicorns of the countries where they are found. 
1. Steirastoma histrionica*. (Tab. X. fig. 18.) 
Steirastoma histrionica, White, Cat. Long. Col. Brit. Mus. ii. p. 354 (1855)*; Bates, Trans. Ent. 
Soc. 1872, p. 206°. 
Steirastoma larva, Thomson, Class. Long. pp. 6, 336 (1860). 
Hab. Muxico, Orizaba (Sallé), Misantla (Hoge); British Honpuras!, Belize (Blan- 
caneauxr); Nicaragua, Chontales (Belt 2, Janson). | | 
2. Steirastoma larva. 
Steirastoma larva, Chevrolat, Journ. of Ent. i. p. 186 (1862). 
Hab. Costa Rica, Caché (Rogers); Panama.—Souta America, Colombia. 
3. Steirastoma melanogenys. (Tab. X. fig. 17.) 
Steirastoma melanogenys, White, Cat. Long. Col. Brit. Mus. ii. p. 355; Bates, Trans. Ent. Soc. 
1872, p. 2367. | 
Hab. Nicaragua, Chontales 2.—Soutu AmEERiIcAa, Cayenne, Amazons !. 
4. Steirastoma senex. (Tab. X. fig. 19.) 
Steirastoma senex, White, Cat. Long. Col. Brit. Mus. ii. p. 353’; Bates, Trans. Ent. Soc. 1872, 
p- 206°. 
Hab. Mexico !, Orizaba (Sallé) ; Nicaracua, Chontales (Belt 2). 
5. Steirastoma albiceps. (Tab. X. fig. 20.) 
Steirastoma albiceps, Bates, Trans. Ent. Soc. 1872, p. 207°. 
Hab. Nicaraeua, Chontales (Belt 1). 
6. Steirastoma anomala. 
Latiuscula et breviuscula, depressa, sordide grisea, elytris fasciis inconspicuis duabus obscurioribus, poste- 
riore intus versus apicem deflecta ; oculis parvis; thorace tuberculis lateralibus magnis fere simplicibus, 
apice tantum bifidis, cuspide anteriore minore, dorso medio depresso tuberculis anticis duobus obliquis 
nigro-nitidis; elytris cristis tuberculiferis duabus basalibus curvatis, antice (versus thoracem) porrectis, 
* The founder of the genus and inventor of the word Steirastoma made it feminine. 
