302 HETEROMERA. ' 
with the mark on the opposite elytron at the suture and extending narrowly along it to the middle, the 
suture also narrowly bordered with white pubescence at the base; the pygidium white-pubescent at the 
sides, brown along the middle. Last joint of the maxillary palpi moderately stout, elongate-triangular, 
its outer side much longer than the inner or apical sides, the latter shorter than the inner side; antenne 
slender, pitchy-brown, the five. basal joints testaceous, joints 3 and 4 thin, 3 short, not longer than 2, 4 
much longer than 3, 5-11 a little widened, 5-10 gradually decreasing in length, serrate, all longer than 
broad, 11 not longer nor stouter than 10; elytra not more than two and a half times the length of the 
prothorax ; beneath black, thickly clothed with white pubescence; pygidium very long, moderately stout, 
nearly twice the length of the hypopygium, the latter unusually elongate ; legs comparatively very slender 
(the hind pair excepted), the anterior and middle pairs (the middle tarsi excepted) testaceous, the hind 
pair (the tibial spurs excepted) black, the penultimate joint of the anterior and middle tarsi filiform, the 
intermediate tarsi considerably longer than the tibie of the same pair of legs, the anterior and intermediate 
tibiz sinuous within. 
Length to end of the elytra 3, to tip of the pygidium 4, millim.; breadth 14 millim. 
Hab. Guatemaa, Chacoj in the Polochic valley (Champion). 
One specimen only of this peculiar little species was obtained, evidently a male. It 
differs in many respects from all the other Central-American forms: the last joint of 
the maxillary palpi is unusually elongate; the intermediate tarsi are considerably longer 
than the tibie of the same pair of legs; the penultimate joint of the four anterior tarsi 
is filiform, not in the least dilated, and formed as in the type of the genus Tomowia. 
55. Mordella pretiosa. (Tab. XIII. fig. 16.) 
Moderately elongate, broad, black or brownish-black, the sides of the prothorax and the elytral humeri obscure 
castaneous ; the head with a broad band of dark brown pubescence along the middle, the sides with 
yellowish-cinereous pubescence; the prothorax with a reversed cruciform brownish-black-pubescent mark 
on the middle of the disc (not quite reaching the base or apex, narrowing anteriorly, and interrupted in 
front by a line of the lighter pubescence), connected at the sides in front with a similarly-coloured oblique 
subtriangular patch, the rest of the surface densely and uniformly clothed with yellowish-cinereous pubes- 
cence; the elytra with the following yellowish-cinereous markings—a common transverse band at the base 
(enclosing one or two spots on each elytron), from which a broad branch runs a little way downward on the 
middle of the disc, a short interrupted stripe external to this posteriorly, an angulated fascia at about one 
third from the apex, a narrow straight fascia immediately before the apex (both very nearly extending to 
the lateral and sutural margins), and numerous scattered almost serially arranged punctiform spots,—the 
rest of the pubescence brownish-black; the pygidium yellowish-cinereous-pubescent, with a dark brown 
stripe along the middle. Head obsoletely canaliculate ; palpi testaceous, the last joint of the maxillary 
pair slender, elongate-ovate, its apex obliquely truncate; antennz long, testaceous, the apical one or two 
joints piceous, joints 3 and 4 very elongate and slender, subequal, 5-11 moderately widened, all very 
much longer than broad, 5-10 serrate, gradually decreasing in length, 5 longer than 4, 11 elongate-ovate, 
longer than 10; elytra moderately long; beneath densely yellowish-cinereous-pubescent, the posterior 
coxee and the ventral segments at the sides behind with some dark brown pubescence; pygidium stout, 
rather short, blunt at the tip, not twice the length of the hypopygium ; legs very long and slender (the 
hind pair excepted), the hind pair black with the tibial spurs testaceous, the two other pairs in great part 
testaceous, the penultimate joint of the anterior and intermediate tarsi filiform, the intermediate tarsi 
slightly longer than the tibiz of the same pair of legs. 
Length to end of the elytra 5, to tip of pygidium 6, millim.; breadth 24 millim. 
Hab. Mexico, Cordova (Saillé). 
Two examples, agreeing perfectly with each other, their sex not ascertained. At once 
separable from M. varicornis, M. sticticoptera, &c., by the more slender antenne (joints 
