100 MALACODERMATA. 
Hab. Panama, Volcan de Chiriqui (Champion). 
Head not much contracted behind, yellow, shining, impunctate ; antenne reaching 
as far as the posterior femora, filiform, pale fuscous; usually two or three joints at the 
base and the apical joint at least are quite pale. The thorax is longer than wide, the 
sides straight, narrowing a little from the base. The disk is shining, depressed on each 
side of the middle, which is sometimes very finely but unevenly channelled ; it is shining 
and glabrous. Elytra as long as the head and thorax, one third as long as the hind- 
body ; the humerus raised and occupied by a pitchy-black spot, which continues about 
half the elytron’s length; the entire margin is yellow, as well as the scutellum. The 
abdomen presents the same peculiarity that I observe in Maronius dichrous; viz. the 
hind angle of each segment is produced into a blunt mucronate lobe. The last dorsal 
plate but one is roundly emarginate, embracing the pygidium, which is rounded at the 
apex and convex above. 
About ten specimens of this insect, which I think to be congeneric with B. abdominalis, 
have been collected by Mr. Champion. ; 
MARONIUS. 
Genus antennis longis, quam corpus paulo brevioribus, elytris abbreviatis pedibusque longis Molorchum quodam- 
modo simulans. 
Caput breve, postice constrictum. Palpi max. art. ult. oblique truncato, subsecuriformi. Prothorax quadratus, 
depressus, biimpressus, vix marginatus, linea submarginali basali impressa. Elytra tertiam partem abdo- 
minis tegentia, haud distantia. Ale ample, abdomini equales. Pedes longi, tarsorum posticorum art. 
primo sequentibus equali. Abdominis segmentum dorsale penultimum maris utrinque furcatum ; apicale 
cum ventrali valyulam convexam formans ; feminis segm. apicale minus, obconicum apice truncato. 
1. Maronius dichrous. (Tab. VI. fig. 9.) 
Rufo-ferrugineus ; prothoracis disco elytrorumque apicibus aurantiacis; capite, antennis, palporum apicibus, 
femoribus (basi excepta), tibiis, tarsis abdominisque segmentis duobus ultimis nigris; alis fuscis. Long. 
10-11 millim. 9. 
Mas processu segmenti penultimi laterali longiore, segmentis genitalibus subglobosis. 
Femina processu vix prominulo, segmento apicali minore, ventrali apice rotundato, dorsali truncato angustiore. 
Hab. Mexico, Playa Vicente (Sallé); GuateMaLa, Zapote (Champion); NicaRaaua, 
Chontales (Belt, Janson). 
A male specimen from Chontales is figured. Head black ; underside of the basal and 
second joint of the antenne and base of the palpi pale yellow; terminal joint of maxil- 
lary palpi triangular, apex obliquely truncate; crown shining. Prothorax reddish 
yellow, with a waxy look, margins sharp but not reflexed, a double impression on the 
disk. Elytra covering more than a third of the abdomen; their apices acuminate and 
thickened, waxy red. Abdomen clear red, the hind angles of each dorsal segment 
projecting, the last two segments black, the last but one being produced on each side: in 
the male the projection is a tooth-like tubercle ; in the female it is simply the production 
