272 HETEROMERA. 
5. The markings ashy, golden, or fulvous, those on the thorax partly or almost entirely obliterated ; the 
sutural stripe extending to the anteapical fascia, the former widened at the middle, the latter broad and 
extending completely across, the other markings on the dise towards the base obsolete; the scutellum 
black. (Fig. 21.) 
Hab. Mexico, Orizaba (Sallé) ; GuatemaLa, Coban (Conradt). 
Four examples, three from Guatemala, one from Mexico. 
The amount of cinereous pubescence on the sides of the ventral segments and meta- 
sternum is also variable, the pubescence on the underside being sometimes entirely 
black, sometimes in great part cinereous. The oblique humeral callus is prominent 
and continued nearly to the apex of the elytra (the sutural region appearing to be 
much depressed, owing to the convexity of the adjoining portion of the elytra); but it 
is less distinct in the single female specimen received. The pygidium is strongly 
compressed at the sides; in the male it is very long and acuminate, two or three times 
the length of the hypopygium, and not very much shorter than the elytra (measuring 
from 5-6 millim.) ; in the female it is more obtuse at the tip, and a little shorter, 
though more than twice the length of.the hypopygium. The length of the insect, 
from the front of tbe thorax to the tip of the elytra, varies from 7-10 millim. 
M. picta is allied to M. quadrisignata and M. clavicornis, but differs from both in its 
very much more slender antenne, as well as by the elytral markings. ‘The elytra 
appear to be more narrowed behind in the male than in the female. The head is very 
narrowly extended behind the eyes. 
4, Mordella melzna. 
Mordella melena, Germ. Ins. spec. nov. p. 169*; Lec. Proc. Acad. Phil. xiv. p. 46°; J. B. Smith, 
Trans. Am. Ent. Soc. x. pp. 80, 82, t. 1. fig. 83° *. 
Sphalera melena, Lec. Col. Kans. & East. New Mexico, p. 17 *. 
Hab. Norta America! 4, Middle, Southern, and Western States 2 ?.—Mzerxico, Peras, 
Playa Vicente, Cordova, Tehuantepec (Sallé), Jalapa, Oaxaca, Tapachula (Hoége), 
Atoyac (H. H. Smith); British Honpuras, R. Sarstoon (Blancaneauax); GUATEMALA 
(Sallé), Coban, Panzos (Conradt), San Juan in Vera Paz, Senahu, Sinanja, Chacoj, 
San Gerénimo, San Isidro, Zapote (Champion); Nicaragua, Chontales (Belt, Janson) ; 
Costa Rica, Volcan de Irazu (Rogers); Panama, Bugaba, Volcan de Chiriqui (Cham- 
pron). 
Var.? Smaller and less elongate; the antenne less broadly clavate, joints 6-10 strongly transverse, 11 not 
much narrower than 10; the pygidium moderately long. 
Hab. Panama, Bugaba, Volcan de Chiriqui (Champion). 
A common insect throughout Central America. The species differs from JV. scuted- 
laris and M. atricolor by its short clavate antenne, the latter with joints 5-10 strongly 
* The antenne as represented in this figure are purely imaginary. 
