366 RHYNCHOPHORA. 
a’, Prosternum bisuleate; intermediate and posterior femora obsoletely 
sulcate. 
h’, Anterior femora feebly dentate; elytra with the striz obliterated on the 
disc. 6 ee ew we ew ee ee ee ee we ew ww ee) «Species 24, 
i’. Anterior femora unarmed; elytra striate throughout . . . . . . . Species 25. 
1. Madarus quadripustulatus. (Tab. XVIIL figg. 24, 24a, ¢; 25, 2.) 
Calandra quadripustulata, Fabr. Syst. Eleuth. ii. p. 435 7. 
¢. Madarus quadripustulatus, Boh. in Schénh. Gen. Cure. viii. 1, p. 1057. 
3. Rostrum (fig. 24 a) elongate, abruptly bowed at the apical third, with a dense fringe of long falvous hairs 
along each edge beneath, the antenne inserted far beyond the middle; prosternum with a stout, flattened, 
anteriorly bifurcate process between the coxe; anterior tarsi dilated and hairy ; anterior tibie hairy 
along their inner edge; first ventral segment depressed, and clothed with a few hair-like scales, down the 
middle, the fifth truncate at the apex; pygidium transverse and narrowly visible from beneath. 
2. Rostrum (fig. 25) much shorter, strongly arcuate from the base, the antenne inserted at about the middle ; 
pygidium longer and less eonvex, scarcely visible from beneath. 
Hab. GuatEMaLa, Yzabal (Sallé: 3g); Nicaragua, Chontales (Belt: 9); Panama, 
Volcan de Chiriqui (Champion: ¢ ).—Sourn Auerica ! 2, 
We possess three specimens of this widely-distributed insect frrom Central America. 
The male has not previously been described. The antennal club is elongate, the 
prosternum is without apical fovea, and its basal process is emarginate behind, in both 
sexes. MM. quadripustulatus is incorrectly treated in the ‘Munich Catalogue ’ 
(p. 2638) as synonymous with Conoproctus quadriplagiatus, Lacord. 
2. Madarus corvinus. (Tab. XVIII. figg. 26, 26a, ¢.) 
Calandra corvina, Fabr. Syst. Eleuth. ii. p. 4357. 
Madarus corvinus, Boh. in Schénh. Gen. Cure. iii. p. 638 ?. 
d. Fifth ventral segment subtruneate at the apex (leaving the pygidium narrowly exposed beneath); antenns 
inserted beyond the middle of the rostrum. 
2. Fifth ventral segment rounded at the apex (the pygidium scarcely visible from beneath); antenne 
inserted at the middle of the rostrum. 
Hab. Nicaragua, Chontales (Belt: 2); Panama, Bugaba (Champion: ¢ ).—Sovtu 
AMERICA !, Brazil 2. 
T'wo males and two females. Recognizable by the deeply sinuate base of the 
prothorax; the almost smooth elytra (the faint striz being visible at the sides only), 
which are considerably dilated at the shoulders; the squamose, bifurcate basal portion 
of the prosternum, and the deep transverse fovea near its apical margin. ‘The femora 
are clavate, the anterior pair sometimes with indications of a short tooth. The 
exposed intercoxal portion of the metasternum is triangular. 
