232 SUPPLEMENT. 
Only three specimens, and those all females, have been detected by me as yet among 
the vast number of Lycide collected in Chiriqui by Mr. Champion. 
Calopteron obliquum (p. 14). 
The specimens from Chontales referred by me to C. obliguum I now separate ; and as 
I have not seen C. obliquum, Say, from there, the habitat given must be removed and 
transferred to the species now described at C. bifurcatum. 
18 (a). Calopteron bifurcatum. 
Lineare, nigrum; prothoracis lateribus et margine frontali elytrorumque dimidio basali (sutura pretermissa) 
ferrugineis ; prothoracis carina fortiter clevata postice tenuissime canaliculata, basi prominula altius elevata, 
fortiter bifurcata. Long. 5-64 millim. 
Hab. Nicaragua, Chontales (Janson) ; Panama, Bugaba (Champion). 
Var. Fere tota nigra; elytris basi thoracisque limbo piceis. 
Hab. Panama, Volcan de Chiriqui (Champion). 
There is no difficulty in separating this from C. obliqguum if the smaller size and 
differences in the carina of the thorax are observed. From C. suturale it differs in the 
greater amount of black of the elytra, but it resembles it in the formation of the thoracic 
carina, which is, however, more strongly developed here. 
18 (s). Calopteron suturale. 
Lineare, nigrum; prothoracis lateribus et fronte marginali elytrisque ochreis, his sutura ad basin apiceque 
nigris ; elytris costis quatuor, prima et tertia vix distinctis, secunda et quarta fortiter elevatis. Long. 5-8 
millim. ¢ Q. 
Mas. Antennis acute serratis. 
Femina. Antennis serratis. 
Hab. Panama, Volcan de Chiriqui (Champion). 
Head black ; thorax with a simple carina, but the base elevated in the middle, and 
the carina notched here so as to appear bifurcate. Elytra linear, with two double and 
one single row of scalariform well-marked cells; the second and fourth coste much 
raised. Legs, antenne, palpi, and body black; the central portion of the thorax and 
carina, the scutellum and suture, as far as the middle, and apex of the elytra also dull 
black ; the palpi are yellow at their bases, and the trochanters and bases of the femora 
are more or less tinted internally with the same colour. A large number of specimens 
were collected by Mr. Champion. This species is allied to C. obligquum and more nearly 
to C. melanurum, Kirsch ; I believe it, however, to be distinct from the latter, and that 
among other differences the more strongly raised alternate costee and the black apical 
joint of the antennee will distinguish it. 
The antenne are serrate in both sexes, rather more acutely so in the males, which 
are more linear, and usually smaller than the females. 
