HEGEMONA. 273 
strongly and equally so posteriorly, almost smooth; beneath more shining, almost smooth; prosternum 
horizontal, strongly and acuminately produced, longitudinally raised on each side between the coxe, its 
anterior face declivous and deeply excavate within. 
Length 16-17 millim.; breadth 63-7 millim. (<¢.) 
Hab. Guatemata, El Tumbador, Las Mercedes (Champion). 
Five male examples, all from the coffee-region of the Pacific slope, and from an eleva- 
tion of from 2500 to 3500 feet. 
This is a small species, with narrow, subparallel, laterally compressed elytra; it 
is not very nearly allied to any of the others noticed here; the female remains to be 
discovered. 
11. Hegemona chiriquensis. (Tab. XII. fig. 4, 2.) 
Greenish-bronze, moderately shining. Head finely, shallowly, and sparingly punctured, the epistoma separated 
by a deeply impressed groove, the intraocular space sometimes shallowly impressed in the middle, the 
vertex usually with a shallow semicircular impressed line extending on each side anteriorly to the inner 
margin of the eye; prothorax subquadrate, nearly as long as broad in the male, more transverse in the 
female, the sides almost straight from the middle to the base, slightly narrowed anteriorly from just before 
the apex, the anterior angles somewhat produced in front and rounded, the surface very minutely, shal- 
lowly, and sparingly punctured; elytra more bronzy than the prothorax, broad, short, strongly gibbous, 
distinctly wider than the prothorax at the base, rounded at the sides, regularly convex, the humeri rather 
prominent, the strise opaque, rather finely punctate, and deeply impressed, the interstices uninterruptedly 
convex throughout and almost impunctate, the sutural and the seventh slightly raised posteriorly and con- 
fluent, and somewhat produced at the sutural angle in both sexes; beneath more shining, usually of a 
greener tint than above, very finely and sparingly punctured; apex of the prosternum subtuberculiform. 
Length 16-19 millim. ; breadth 73-10 millim. (¢ 2.) 
Hab. Panama, Chiriqui (coll. Oberthiir), Volcan de Chiriqui 3000 to 4000 feet 
(Champion). 
Var. Rather duller; the elytra still more bronzy, the interstices more convex, the spaces between, including 
the strie, rather broadly opaque throughout. 
Hab. Panama, Bugaba 1000 feet (Champion). 
This insect has the general facies of H. filibuster, from which it will be readily known 
by its much smaller size, rather duller colour, the straighter-sided longer thorax, and 
the interstices of the elytra regularly convex (not angularly raised) and uninterrupted 
throughout ; it is allied also to H. allardi (Haag), Allard, from Colombia, but, judging 
from the description, abundantly distinct. The specimens from Bugaba represent 
a rather well-marked variety. I met with both forms rather plentifully. 
12. Hegemona furcillatus. 
Hegemona furcillatus, Allard, Mittheil. der schweiz. ent, Ges. v. pp. 61, 272 (¢)?. 
Hab. Mexico 1. 
Unknown to me. This insect is described as having the head and thorax of a very 
brilliant bluish-violet colour ; the elytra dark blue; the interstices (in the female) very 
BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 1, June 1887. 2NN 
