MORDELLISTENA. 321 
tibiee with six (including the subapical one, the basal one abbreviated), the first joint of the hind tarsi 
with four, and the second joint with two, short, oblique, parallel ridges. 
Length to end of the elytra 34, to tip of the pygidium 44, millim.; breadth 12 millim. ( 2.) 
Hab. Panama, Volcan de Chiriqui (Champion). 
One example. A stoutly built, rather broad species, with reddish-testaceous head, 
palpi, and antenne, and black thorax, elytra (the testaceous tip excepted), and body ; 
the sides of the thorax, the suture and a sublateral stripe on the elytra to one fourth 
from the apex, and the apex itself, yellowish-cinereous-pubescent. 
19. Mordellistena texana. 
Mordellistena texana, J. B. Smith, Trans. Am. Ent. Soc. x. pp. 89, 98°. 
Elongate, broad, robust, subparallel, black, the head (the eyes excepted) and prothorax rufous ; the pubescence 
on the elytra black with intermixed yellowish hairs, for the rest partaking of the ground-colour. Head 
large and broad, the eyes large ; maxillary palpi obscure testaceous, short, stout, the last joint triangular, 
its inner and apical sides about equal in length; antenne short and stout, obscure testaceous, the five 
outer joints piceous, joints 3 and 4 short, about equal in length, 5 nearly twice as long as and very much 
wider than 4, 5-10 gradually decreasing in width, 8-10 almost as broad as long, 11 longer than 10; 
prothorax not much broader than long; elytra elongate, parallel in their basal half; beneath, the pro- 
thorax excepted, black, the base of each ventral segment cinereo-pubescent ; pygidium moderately long, 
twice the length of the hypopygium ; legs black, the anterior and middle femora and tibie in great part, 
and the hind tibial spurs, testaceous; the hind tibie and the first joint of the hind tarsi each with about 
five (the basal one on each indistinct), the second joint of the hind tarsi with three, short, oblique, 
parallel ridges. 
Length to end of the elytra 44, to tip of the pygidium 54, millim.; breadth 1} millim. 
Hab. Norra America, Texas .—Mexico, Monterey in Nuevo Leon (fége). 
One example, apparently of the female sex. This species is extremely like J. atri- 
pennis, but it has much shorter maxillary palpi, shorter antenna, larger eyes, and the 
elytral pubescence with intermixed yellowish hairs. The lateral margin of the thorax 
behind, and also the extreme basal margin, is slightly stained with piceous. The 
description of WM. texana is inadequate for determination, but so far as it goes it agrees 
with our insect. 
20. Mordellistena hexastigma. (Tab. XIV. figg. 12, ¢; 12a, maxillary 
palpus.) 
Moderately elongate, rather robust, cuneiform ; the head and prothorax testaceous, the eyes and the tips of 
the mandibles black, the prothorax with traces of a slightly darker broad oblong median vitta anda patch 
on either side of it; the elytra piceous, with an oblique stripe extending from the shoulders almost to the 
suture (nearly surrounding a common rhomboidal basal spot of the ground-colour), an angulated fascia a 
little beyond the middle, the suture and lateral margin beyond this (narrowly), and the apex, flavo- 
testaceous ; the pygidium flavo-testaceous at the base, darker towards the tip; the pubescence partaking 
of the ground-colour. Head moderately convex ; palpi ( ¢ ) testaceous, the last joint of the maxillary pair 
rather long and stout, subtriangular, its inner and apical sides almost equal in length, the outer side 
coneave, the second joint stout; antennw (¢) fusco-testaceous with the basal joints paler, short and 
slender, joints 3 and 4 short, narrow, subequal, 5-11 widened, equal in width, 5 about twice as long as 
4, not much longer than broad, 11 considerably longer than 10; prothorax transverse ; elytra moderately 
long, gradually narrowing from the base; beneath entirely testaceous; pygidium (<3) moderately 
BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 2, October 1891. 2TT 
