DRILOLAMPADTUS. 33 
DRILOLAMPADIUS, g. n. 
Aithre affinis, antennis autem serie duplici ramorum pectinatis sat distinctus. Caput prothorace valde receptum. 
Oculi maris sat magni. Antenne 11-articulate, articulo primo ad apicem robusto, secundo perbrevi, 
tertio ad decimum sequentibus subsqualibus ; basi ramo vel filamento pilifero duplici munita. Prothorax 
semicircularis vel antice paululum angustatus, plerumque canaliculatus. Elytra subcostata. Abdomen 
haud lobatum, maris segmentibus octo, septimo emarginato. 
There are not many genera of Lampyride with bipectinate or biflabellate antenne ; 
and it is necessary to found a new genus for the reception of a few species which differ 
from all other species known to me, in having the antenne with eleven joints, and the 
third to the tenth joints with branches equal in length and filamentary. The general 
form is that of the small species of Zthra; the species very closely resemble Lycide from 
the same district. Three species are known to me—two from Central America, one 
from Colombia, at present undescribed. | 
1. Drilolampadius stolatus. (Tab. III. fig. 20.) 
Niger, prothoracis lateribus late, elytrorum margine humerali tenuiter flavis; elytris sutura costisque duabus 
paulo elevatis, ad apicem evanescentibus. Long. 6-7 millim. ¢. 
Var. Elytris plaga latiore humerali et sutura basin versus flavis. 
Hab. British Honpuras, Belize (Blancaneaux); GuatemaLa, Zapote, Chiacam 
(Champion). Var. Guatemaa, Senahu, San Juan (Champion); Nicaracva, Chontales 
(Belt). 
The specimen figured is from Zapote. 
Prothorax transversely lunate, narrowed from the acute hind angles to the front, with 
large irregular punctures, the disk tumid, uneven, deeply channelled in the middle. 
Elytra subopaque, coarsely, confluently punctate, with two distinct, and externally a 
third abbreviated costa. Those specimens in which the bases of the elytra are more 
yellow appear more distinctly costate ; but I do not see sufficient ground for separating 
them. ‘The fifth and sixth segments of the abdomen beneath show a small diaphanous 
spot. 
Obs. The figure in our Plate shows nine branches on each side of the antenna. Iam 
satisfied that there really exist but eight, the eleventh or terminal joint being simple. 
2. Drilolampadius scutellaris. 
Niger, prothorace (disco excepto) elytrisque (plaga brevi subscutellari nigra) ferrugineis. Long. 7-84 millim. 
Hab. Guatemata, Cubilguitz (Champion); Costa Rica, Caché (Rogers). 
Rather larger than D. stolatus, and with the thorax not so decidedly narrowed in 
front, but transversely lunate. The disk is black; but this colour does not extend to the 
front; the suture and two coste are moderately raised ; the scutellum is black, except 
at its apex; and the’elytra have a short black streak at the base. ‘The body beneath 
BIOL. CENT.-AMER., Coleopt., Vol. III., Pt. 2, February 1881. F 
