272 HETEROMERA. 
anterior angles broadly rounded, the surface very shallowly, minutely, and sparingly punctured; elytra 
very little wider than the prothorax at the base, broad and ovate, rather long, somewhat depressed on the 
disc, the strie finely and very shallowly punctate, more distinctly so outwardly, the interstices punctured 
like the prothorax, feebly convex towards the suture, strongly convex outwardly and at the apex, the first, 
second, and fifth there confluent, the apices rather obtuse; beneath black, shining, almost smooth; pro- 
sternum gradually rounded to the apex, the apex not tuberculiform. 
Length 20 millim.; breadth 9-94 millim. (<.) 
Hab. Guatemata, Santa Barbara and El Jicaro in Vera Paz (Champion). 
This insect is allied to H. elongatus, but will be known by its smaller size, black 
colour, the shorter epistoma separated by a shallower groove, the shorter, flatter, and 
less convex elytra, the strize of which are not quite so finely punctate, the rounded-off 
prosternum, &c. I only met with H. niger on the Chuacus range of mountains; the 
two examples, both males, were captured in not very widely separated localities, 
though on different sides of the range, one at an elevation of 5000 feet, the other at 
2500 feet. 
9. Hegemona zunilensis. (Tab. XI. fig. 26, 2.) 
Bright bronze, with a slight greenish tint, shining. Head very shallowly and minutely punctured, the epistoma 
separated by a narrow impressed line ; prothorax subquadrate, about as long as broad in the male, shorter 
in the female, narrowing gradually from the base, the sides very slightly rounded, almost straight, the 
hind angles rather obtuse, the anterior angles produced in front, rounded, and comparatively prominent, the 
surface finely, closely, and distinctly punctured ; elytra slightly wider than the prothorax at the base, mode- 
rately long, strongly gibbous, laterally compressed, but little rounded at the sides, the strive almost impunc- 
tate towards the suture, comparatively finely punctured at the sides, the interstices moderately convex on 
the basal half, feebly subangular posteriorly, almost smooth, the fifth raised into a short rounded promi- 
nence just before the apex in both sexes ; 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 17-184 millim.; breadth 7-8 millim. (¢ 9.) 
Hab. GuateMa.a, Cerro Zunil 4000 to 5000 feet (Champion). 
This species was captured in plenty in new clearings in the dense forest above the 
coffee-plantations of Las Nubes. I only met with the insect on the Pacific slope, and in 
this one locality. A. zunilensis is remarkable on account of the fifth interstice of each 
elytron being produced into a rounded prominence just before the apex in both sexes. 
10. Hegemona angustatus. (Tab. XII. fig. 3, 3.) 
Very dark greenish-bronze, shining. Head finely and sparingly, but quite distinctly, punctured, semicircularly 
excavate anteriorly, the epistoma separated by a deeply impressed groove; prothorax subquadrate, about as 
long as broad, narrowing very gradually from the base, the sides almost straight, the hind angles subrect- 
angular, the anterior angles produced in front, rounded, and comparatively very prominent, the surface 
very finely, shallowly, and somewhat closely punctured; elytra brownish-bronze, but little wider than 
the prothorax at the base, long, subparallel, laterally compressed, very little wider in the middle than at 
the base, moderately gibbous, rather broadly rounded at the apex, the strie finely and shallowly punctured 
on the disc, more coarsely so at the sides, the interstices narrow, moderately convex on the basal half, 
