MORDELLISTENA. 327 
28. Mordellistena discicollis. (Tab. XIV. figg. 20, ¢ ; 20a, hind leg.) 
Moderately elongate, subparallel, black, the head in front and the prothorax very broadly at the sides (so as to 
leave a black anteriorly narrowed median vitta) testaceous ; the pubescence brownish-cinereous, with 
intermixed blackish hairs. Head and prothorax as in WM. longipalpis; maxillary palpi (¢) testaceous, 
the last joint piceous, formed very much as in the female of MU. longipalpis ; antennee ( ¢ ) black with the 
two basal joints testaceous, filiform, stouter and considerably shorter than in UM. longipalpis (3), joints 3 
and 4 very short, subequal, 5 nearly twice as long as 4,5-10 about equal in length but decreasing in 
width, not twice as long as broad ; elytra moderately long, subparallel in their basal third ; pygidium 
very elongate ; beneath, the head and prothorax excepted, black; legs black, the anterior femora, the 
base of the anterior tibis, the basal half of the middle femora, and the hind tibial spurs testaceous ; the 
hind tibie and the first joint of the hind tarsi each with four, the second joint of the hind tarsi with 
three, oblique, short, parallel ridges. 
Length to end of the elytra 3, to tip of the pygidium 3, millim. (<¢.) 
Hab. Guatemata, Senahu in Vera Paz (Champion). 
One male example only, from the humid forest-region of the Atlantic slope. It has 
the antenne and palpi formed very much as in the female of WM. longipalpis. 
29. Mordellistena vicina. 
Elongate, slightly cuneiform, black ; the pubescence coarse and close, and consisting of intermixed yellowish- 
cinereous and black hairs, the latter in one example forming a broad discoidal stripe on the basal two- 
thirds of each elytron. Head strongly transverse, narrowly extended on either side behind the eyes, the 
latter somewhat prominent; maxillary palpi black, the apical joint (¢) long and stout, cultriform ; 
antenne ( ¢) filiform, slender, moderately long, black, joints 2 and 3 or 2-4 testaceous, 4 distinctly longer 
than 3, the latter short, 5 about one half longer than 4, 5-11 elongate; prothorax broader than long; 
elytra moderately elongate; beneath black, cinereo-pubescent ; pygidium elongate, more than twice the 
length of the hypopygium; legs black, the hind tibial spurs testaceous ; the hind tibiz and the first joint 
of the hind tarsi each with four or five, the second joint of the hind tarsi with two or three, short, oblique 
ridges. 
Length to end of the elytra 37-33, to tip of the pygidium 4-44, millim. (¢.) 
Hab. Mexico, Omilteme 8000 feet, Chilpancingo 4600 feet, both in Guerrero 
(H. H. Smith). 
Two male examples. Very near /. murina, var. a, and perhaps only another form 
of that variable species; but differing from it by the more transverse head, the eyes 
somewhat prominent and not quite reaching the occiput, the apical joint of the maxillary 
palpi a little longer and more cultriform, and the elytral pubescence largely intermixed 
with black hairs. In both examples the basal joint of the antenne is infuscate. 
30. Mordellistena atripennis, (Tab. XIV. figg. 21; 21a, maxillary palpus.) 
Elongate, subparallel, moderately broad, black ; the head (the eyes excepted) and prothorax (except the lateral 
margins posteriorly) rufous, very finely pubescent ; the elytra with some cinereous hairs along the basal 
margin and on the basal fourth of the suture, for the rest entirely black-pubescent. Head moderately 
large, the eyes small; maxillary palpi piceous, long and stout, the apical joint elongate-triangular, its 
inner and apical sides about equal in length, the outer side concave; antenne black, rather stout, 
moderately long, joints 3 and 4 short, subequal, 5 almost twice as long as and very much stouter than 4, 
5-10 decreasing in width, longer than broad; prothorax about as long as broad; elytra elongate, sub- 
parallel in their basal half; beneath, the head and prothorax excepted, black, yellowish-cinereous- 
pubescent ; pygidium slender, comparatively short; legs, the anterior coxw, the base of the anterior 
