270 HETEROMERA. 
wider than the prothorax at the base, strongly gibbous, the strie rather broad, shallowly but very distinctly 
punctured on the disc, more coarsely so towards the sides, of a rather dull bronzy-cupreous tint, the inter- 
stices moderately. convex, smoath, the alternate.ones sometimes faintly tinged with green, the apices very 
slightly produced ; beneath more shining, very shallowly and finely punctured ; prosternum subhorizontal, 
strongly produced, the apex raised and tuberculiform, broadly longitudinally raised on each side between 
the cox, its anterior face deeply excavate within. 
Length 183-19 millim.; breadth 8-9 millim. (d 2.) 
Hab. Brirtse Honpuras, R. Hondo (Blancaneauz). 
Three examples. This species is nearest allied to H. lineatus, from which it will be 
known by the duller and almost unicolorous elytra, the less convex interstices, the more 
coarsely punctured strie, the differently formed prosternum, the less excavate frontal 
region of the head, &c. 
4. Hegemona bicaudatus. (Tab. XI. fig. 24, 2.) 
Bronze-black, rather dull. Head very shallowly, minutely, and almost imperceptibly punctured, the epistoma 
separated by a fine narrow groove ; prothorax transverse, very little shorter in the female, about equally 
narrowed at the base and apex, the sides somewhat rounded, broadly but very shallowly emarginate on each 
side a little behind the middle, the hind angles obtuse, the anterior angles broadly rounded and prominent, the 
surface very shallowly and finely but somewhat closely punctured ; elytra long, ovate, moderately gibbous, 
the width of the prothorax at the base, rather longer in the male, a little wider at the base in the female, 
the strie comparatively coarsely punctured, the interstices convex and almost impunctate, the apices rather 
obtuse, rather more bronzy and a little brighter in tint than the head and prothorax ; the second, fifth, and 
eighth interstices confluent at the apex and together produced into a broad, stout, conical tubercle (rounded 
at the apex, distant from the suture, and projecting laterally far beyond the apex of the elytra) on each 
elytron in the female, simple in the male; beneath more shining, almost smooth ; apical portion of the 
prosternum produced into a stout, conical tubercle, the apex of which is rounded. 
Length 21-22 millim.; breadth 9-9 millim. (3 9.) 
Hab. Guatemata (Sallé, 2 ), Coban (Champion, ¢ ). 
H. bicaudatus must be closely allied to H. retrodentatus, judging from the description 
of that species, but as the Guatemalan insect differs in several points I prefer to 
describe it. 
H. retrodentatus is said to have the “ punctis striarum parvis,”’ a definition that cannot, 
I think, be applied to H. bicaudatus. 
Compared with H. resplendens, the present insect is longer and narrower. 
5. Hegemona retrodentatus. 
Hegemona retrodentatus, Allard, Mittheil. der schweiz. ent. Ges. v. pp. 61, 253°. 
Hab. Mexico, Chiapas (Chevrolat 1). | 
This species is unknown to me; it is described as being allied to H. resplendens, and 
to differ as follows :—The head and thorax impunctate; the thorax a little narrower, 
more quadrate, the base slightly emarginate, the anterior angles more rounded and more 
thickly margined; the elytra with similar deep grooves, but with the striz more finely 
