236 SUPPLEMENT. | 
30. Calopteron imitator. (Tab. XI. fig. 6.) 
Nigrum; prothoracis lateribus strigaque humerali flavo-testaceis; thoracis carina postice tenuiter divisa ; 
elytris obsoletius reticulatis, quadricostatis ; antennis corporis longitudine. Long. 6-9 millim. ¢ 9. 
Hab. Guatemata, Lanquin, Zapote, Duefias, Cerro Zunil, Cahabon, Panima, San 
Juan in Vera Paz (Champion); Panama, Bugaba, Volcan de Chiriqui (Champion). 
When the section to which this species belongs is recognized its separation is easy, 
the division of the thoracic carina being evident enough in most specimens ; otherwise 
it may be confounded with C. mimicum, and its allies. The antenne are long and 
compressed, and but little serrate in either sex. A pair were found by me still united 
after being mounted on card, the male being much smaller and concealed under the wings 
of the female. The front margin as well as the sides of the thorax is often yellow. 
The elytra have sometimes only the humeral costa, at others a wide stripe embracing 
the margin, yellow. A Bugaba specimen is figured. 
31. Calopteron (2) debile. 
Depressum, nigro-fuscum ; prothorace subquadrato antice breviter carinato, carina in medio per fossulam ad basin 
divisa, disco utrinque infuscato ; elytris sericeo-pubescentibus, ad basin et marginem flavescentibus, lineis 
quatuor elevatioribus intervallis regulariter quadrato-reticulatis, pedibus basi testaceis. Long. 5 millim. 
Hab. Panama, Matachin (Dr. O. Thieme, O. Schunke), Volcan de Chiriqui (Champion). 
At first sight this little insect would be taken fora Plateros, especially as the thorax 
is impressed with a long lanceolate fossa with a very short carina at the apex; but on 
studying it we find there are only five rows of cells on the elytra; the antenne are 
compressed ; the fossa is not impressed on a flattish disc, as in Plateros, but its sides 
are the divided carina, and reunite at the base. ‘Two or three joints at the base of the 
antenne are yellow; the suture, base of the elytra, and margin for some distance below 
the middle are of a bright straw-yellow, clothed with scales and short hairs. A series 
of this species were forwarded me by M. R. Oberthiir for determination. 
This species, and some others, can only be retained in the genus Calopteron till 
appropriate divisions can be made for all the species having divided thoracic carinzee— 
that is to say, those in Section B of this work. The thorax is not, however, similarly 
channelled or fossulate in all these species, and other characters will no doubt enter into 
the analysis. 
32. Calopteron plateroides. 
Nigrum, depressum, parallelum ; prothoracis lateribus et margino frontali, elytrorumque dimidio basali (sutura 
pratermissa) lete ferrugineis; anteanis serratis, articulis duobus apicalibus flavis; elytris seriebus quinque 
concinne areolatis, interstitiis equaliter elevatis; prothoracis disco canalicula haud antice vel postice 
aperto, diviso. Long. 5 millim. 
