MALACODERMATA. 243 
Plateros stramineus (p. 25). 
To the localities given, add:—Guatemata, Cerro Zunil, San Isidro, Zapote (Champion); 
Panama, Volcan de Chiriqui, Bugaba, David (Champion). 
Several specimens have been found.. The males have remarkably long antenne 
reaching to the end of the body, and large prominent eyes; it is an aberrant species. 
The apical joints of the antenne are pale in some specimens, and most of those recently 
found are larger than those I had seen before, being six and a half millimetres long. 
TEROPLAS, gen. nov. (to follow Plateros, p. 25). 
Platerote affinis; elytra simili modo decemstriata, et interstitiis alternis leviter elevatioribus. Oculi maris 
globosi, in utroque sexu sat prominuli. Antenne, maris valde ramose, flabellis tenuibus simplicibus, quam . 
articuli proprii longioribus, e basi ortis; femine corporis fere longitudine, acute serrate. Prothorax 
margine frontali sinuata, fronte prominula, disco prope basin fossula subpunctiformi, margine reflexo, 
integro. 
A new genus must be granted for an insect which, resembling Plateros in many of 
its characters, has nevertheless pectinate antenne in the male. ‘The distinction between 
this and some of Mr. Waterhouse’s genera, as, for instance, Ditoneces, is not easily 
expressed in a short description. It must suffice here to say that the Eastern genera 
generally are well differentiated, and the one named has the branches of its antenne 
pubescent, and arising at a very acute angle from the joints. There is no species of 
Plateros known to me at present showing any tendency to such disparity between the 
sexes as we see here. 
1. Teroplas fusculus. 
Calodadon fusculum, Gorham, anted p. 29. 
Niger, subopacus; prothoracis lateribus et margine antico, elytrorumque callo humerali rufis. Long. 63-8 
millim. ¢ 9. 
Mas. Antennis gracilibus, articulis tertio ad undecimum ramum tenuem e basi emittentibus. 
Femina, Antennis quam corpus paullo brevioribus, articulis acute angulariter serratis. 
Hab. Nicaragua, Chontales (Belt); Panama, Bugaba, Volcan de Chiriqui (Champion). 
Exactly resembling Plateros terminalis and P. erebus in colour, this insect is at once 
to be recognized by the ramose antenne of the male, while the female sex will be known 
by the long serrate antenne suggestive of an alliance to P. stramineus. The males, four 
in number, were found all at Bugaba. The description of Calodadon fusculum at p. 29 
of this volume was made from a unique male specimen in poor preservation and not 
fully coloured. I am not certain still whether the supposed females actually pertain to 
the species. 
