MORDELLISTENA. 323 
markings below the shoulder, three streaks placed in a line across the disc beyond the middle (forming an 
interrupted fascia, the outer one the longest), the apex, the suture very narrowly to beyond the middle, 
and the extreme base, and also the pygidium at the base, yellowish-cinereous-pubescent, the rest of the 
pubescence black. Palpi obscure testaceous, the last joint of the maxillary pair stout, elongate-triangular, 
its inner and apical sides about equal in length, both much shorter than the outer side; antenne com- 
paratively short, black, the basal four joints testaceous, joints 3 and 4 short, slender, equal in length, 4 a 
little stouter than 3, 5-11 moderately widened, 5 nearly twice as broad as and very much longer than 4, 
5-10 longer than broad, about equal in length; prothorax transverse; elytra gradually narrowing from 
the base; beneath black, the sides of the breast and the base of each ventral segment yellowish-cinereous- 
pubescent ; pygidium moderately long, twice the length of the hypopygium ; anterior and middle legs 
piceous, the hind pair black with the tibial spurs testaceous; the hind tibie with five, 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 3, to tip of the pygidium 33, millim.; breadth 1 millim. (¢.) 
Hab. Panama, Volcan de Chiriqui (Champion). 
One male example. Differs from all the other Mordellistene here described in the 
arrangement of the pubescent markings of the elytra. The fourth joint of the antenne 
is slender, asin M. trilinea, &c.; the apical joint of the maxillary palpi is comparatively 
_ stout and angular; the pygidium is moderately long. 
23. Mordellistena guttifer. (Tab. XIV. fig. 15, 3.) 
Moderately elongate, cuneiform, black ; the head, the prothorax with a narrow stripe on the disc, an indistinct 
stripe on either side of it, the base, and the sides, indeterminately, the scutellum, the elytra with an 
angulated fascia a little below the base, a spot at the shoulders connected with it, another fascia just 
beyond the middle (formed by three oblong coalescent spots on each elytron, the outer one much longer 
than the others), an angular spot near the suture beyond this, the apex, and the entire suture, narrowly, 
and the pygidium, yellowish-cinereous-puhescent, the rest of the pubescence on the elytra purplish-black 
and that between the pubescent markings on the prothorax brown. Head moderately convex ; palpi( ¢) 
flavo-testaceous, the last joint of the maxillary pair darker at the tip, the latter broad, triangular, its 
inner and apical sides about equal in length; antenne ( ¢ ) flavo-testaceous, but becoming darker beyond 
the middle, the terminal four joints pitchy-brown, comparatively short, rather slender, joints 3 and 4 
short, equal in length, 4 a little wider than 3, 5-11 equal in width, broader than 4, 5-10 subserrate, 
slightly decreasing in length, all longer than broad; prothorax transverse; elytra narrowing very 
gradually from the base, moderately long; beneath black, yellowish-cinereous-pubescent, the venter 
uniformly so; pygidium long and rather stout, twice the length of the hypopygium ; legs ( ¢ ) piceous, 
the anterior femora and tibiee and the hind tibial spurs testaceous, the anterior tibize stout ; the hind tibie 
with five (including the subapical one, the basal one abbreviated and faint), the first joint of the hind 
tarsi with four (the basal one abbreviated), and the second joint with two, short, oblique, parallel ridges. 
Length to end of the elytra 23, to tip of the pygidium 33, millim.; breadth 1 millim. (d.) 
Hab. Mexico, Cerro de Plumas (ége). 
One male example. This small species has the pubescent markings of the elytra 
very neatly and sharply defined. The last joint of the maxillary palpi is stout and 
triangular. The antenne are comparatively short, not elongated as in the males of 
some of the allied forms. In the arrangement of the elytral pubescence, I. guttifer 
differs considerably from all the other Mordellistene here described. 
2TT 2 
