286 HETEROMERA. 
formed antenne, the arrangement of the elytral pubescence, &c., distinguish this species 
at once from the Mexican W. triangulifer, which it perhaps most nearly resembles. 
The antennal joints 5-11 are about equal in width, 3 and 4 comparatively stout. The 
oblique humeral pubescent stripe partly partakes of the ground-colour from which 
it arises, the rest of the surface beneath the pubescence being black. 
28. Mordella rufovittata. (Tab. XII. fig. 15.) 
Elongate, black, sparsely pubescent, the prothorax reddish at the sides behind, the elytra with a broad reddish 
stripe at the sides extending to considerably beyond the middle and reaching the lateral margin in front ; 
on the elytra traces of a yellowish-pubescent common anteapical fascia and a line of similarly coloured 
pubescence extending up from it to the base are visible, the apical portion before and beyond the fascia 
being blackish-pubescent (the remainder of the pubescence is abraded). Antenne testaceous, long and 
thin, subfiliform, joints 3 and 4 very slender, 4 much longer than 3, 5-10 (11 is broken off) only a little 
wider, all more than twice as long as broad; beneath black, the last two ventral segments reddish- 
testaceous ; pygidium reddish-testaceous, the apical half a little darker, slender and moderately long, 
nearly three times the length of the hypopygium; legs long and slender (the hind pair excepted), 
testaceous, the posterior femora and tibise piceous, the inner posterior tibial spur exceedingly elongate. 
Length to end of the elytra 34, to tip of the pygidium 4, millim.; breadth 13 millim. 
Hab. Mexico, Cordova (Sallé). 
Though only a single abraded, broken, specimen has been received, it is advisable to 
name it, the insect differing from all the other Central-American Mordelle, M. flavi- 
frons excepted, in the form of the antenne. The species is perhaps nearest allied to 
M. badiipennis, from which its much more elongate shape, longer legs, and very 
different colour distinguish it. 
29. Mordella badiipennis. (Tab. XII. fig, 16.) 
Elongate, sparsely pubescent, black, the mouth-parts (the tips of the mandibles excepted) testaceous, the pro- 
thorax at the sides behind and at the base laterally reddish-brown, the elytra light reddish-brown, their 
apical half indeterminately darker; the head and the prothorax at the sides in front cinereo-pubescent, 
the remainder of the pubescence on the latter partaking of the ground-colour ; the elytra each with a faint 
oblique yellowish-cinereous-pubescent stripe on the basal third extending from the shoulders to the suture 
and a broader and more distinct similarly pubescent oblique stripe on the apical half extending from the 
middle of the dise to the apex, the rest of the pubescence darker ; the pygidium cinereo-pubescent at the 
base, blackish beyond. Palpi testaceous, the last joint of the maxillary pair stout, subtriangular; antenne 
pitchy-testaceous with the basal four joints paler, slender, joints 3 and 4 thin, subequal, 5-11 broader but 
very little widened, 5-10 feebly subserrate, gradually decreasing in length, all longer than broad (8-10 
subequal), 11 stouter and a little longer than 10; elytra moderately long ; beneath silvery-white-pubescent, 
black, the last ventral segments obscure testaceous ; pygidium very long and slender, compressed laterally, 
pointed at the tip, more than three times the length of the hypopygium ; legs long and comparatively very 
slender, in great part testaceous, the tips of the four anterior tibiee and of all the tarsal joints and the 
posterior femora and the greater part of the posterior tibiz piceous. 
Length to end of the elytra 3, to tip of the pygidium 44, millim.; breadth 13 millim. 
Hab. GUATEMALA, Chacoj in the Polochic valley (Champion). 
One specimen only, probably of the male sex. Allied to I. acuticauda, but differing 
from it by the longer and more slender legs, which are in great part testaceous, the 
