LONGICORNIA. 319 
the genus Aphylax, belonging to the same subgroup of Cerambycide, which differs in 
the conical lateral tubercle of the thorax and the strongly costate elytra. The form of 
the antennal joints constitutes, next-to the clavate femora, its chief character as distin- 
guishing it from Pteroplatus and Elytroleptus. 
1. Corynellus mimulus. 
Niger, subtus politus, supra opacus; capite (supra et infra), thorace (maculis elongatis nigris tribus exceptis) 
elytrisque dimidio basali (vittula nigra suturali excepta) fulvescenti-rufis; thorace convexo, «quali, 
sericeo, sparsim punctulato; elytris confertim discrete punctulatis, utrinque costulis angustis duabus 
tenuibus minime elevatis, apice conjunctim rotundatis. 
Long. 43 lin. 
Hab. Mexico (Sallé). 
2. Corynellus ochraceus. (Tab. XXI. fig. 20.) 
Ochraceus; antennis, vertice macula triangulari thoraceque vitta lata, nigris; femoribus apice, tibiis, tarsis ven- 
treque piceo-fuscis ; thorace impunctato, sericeo; elytris utrinque costula tenui unica vix perspicua. 
Long. 33 lin. 
Hab. Panama, San Feliz (Champion). 
CRIOPROSOPUS (p. 74). 
The remark in the former part of this work that C. rimosus differs in essential points 
from its congeners was founded on the supposition that the great sexual difference it 
displays in the sculpture of the thorax (densely punctured in the male, sparsely so in 
the female) was peculiar to it. The subsequent arrival of more abundant material 
proves that all the typical species of the genus present this sexual character. The type 
(C. servillei) must therefore be a female, the other sex of which remains to be discovered, 
and the metallic species from Guatemala, which I took to be a female of C. iridescens, 
the male of a distinct species. 
The genus, as at present constituted, contains two distinct groups, meriting generic 
rank, as they differ from each other nearly as much as Stenaspis differs from Criopros- 
opus. ‘The typical or first group is characterized as I have above stated; the second 
group, typified by C. viridipennis, is distinguished by the thorax of the male having 
the sculpture confined to a limited area towards each anterior angle, the thorax in the 
female being quite smooth. To this group ,belong C. viridipennis, C. lampros, 
C. rutilans, and C. cacicus*, 
* Crioprosopus cacicus. 
C. rutilanti affinis ; elytris relative brevioribus apiceque obtusioribus ; niger; thorace tuberculo laterali, meta- 
sterni macula ventreque, rufis; elytris saturatius cyaneis. 
Long. 13 lin. ¢ G. 
Hab. Colombia. 
