¥72 HETEROMERA. 
Hab. Guatemaua, San Gerénimo (Champion); Panama, Bugaba, Volcan de Chiriqui 
3000 feet, Boquete 3500 feet, David (Champion). 
Numerous examples of both sexes, collected by myself at various elevations, from a 
little above the sea-level up to 3500 feet. ‘The smaller size, the rather more convex and 
less elongate shape, the differently coloured antenne, the third joint of which is rela- 
tively shorter in the male, and the different system of coloration of the elytra distin- 
guish X. trifasciatus from X. sticticus or X. ramosus. The elytra vary a little in the 
markings, according to the predominance of the lighter or of the darker colour ; in some 
specimens the fasciz are broken up into spots; the apex in all is testaceous. Chiriqui 
examples do not differ from those from Vera Paz. Among the Central-American species 
with flabellate antenne in the male, this seems to come nearest to the North-American 
X. melsheimeri, Lec., but to differ from it in its much smaller size, less elongate shape, 
and differently coloured antenne. 
6. Xylophilus breviramus. (Tab. VIII. figg. 5, ¢; 6, 2.) 
Of the same form and colour as X. trifasciatus; the elytra similarly marked, but with the extreme apex 
usually piceous. Head large, densely and roughly punctured ; eyes very large and coarsely granulated 
(as in X. érifasciatus)—in the male narrowly separated (not contiguous), in the female divided by a space 
only twice the width of that of the male (this space narrower than that of the female of X. trifasciatus) ; 
antenne—( ¢') shorter than in X. trifasciatus, joint 2 short and globose, 3 three times as long as 2, 4 about 
half the length of 3, 4-10 subequal, and each with a comparatively short clubbed ramus (the longest 
only about equalling joints 7-9 united), 11 very stout, twice as long as 10, abruptly constricted beyond 
the middle, and then slender to the apex, 1, 10, and 11 and the tips of the outer rami piceous, the rest 
testaceous—(  ) much as in X. trifasciatus, joints 4-10 gradually decreasing in length and increasing in 
width, 1 and 9-11 (except the tip of the latter) piceous, the rest testaceous; prothorax, elytra, and legs 
as in X. trifasciatus ; the hind femora strongly incrassate in both sexes. 
Length 2-23 millim. (¢ 9.) 
Hab. Panama, Bugaba, Volcan de Chiriqui (Champion). 
Three male and two female examples. Very closely allied to X. trifasciatus, but 
easily distinguished from it in the male sex by the different proportions of the antennal 
joints, the rami of which are much shorter and more clubbed, and the less con- 
tiguous eyes. The female is only to be separated from the corresponding sex of 
X. trifasciatus by the rather more approximate eyes and the differently coloured 
antenne. ‘The antennal rami are shorter and more clubbed than in any of the pre- 
ceding species. The extreme apices of the elytra are more or less infuscate in four 
examples, the fifth having the apices testaceous as in X. trifasciatus. While the eyes 
in the male are less contiguous than in X. trifasciatus, the reverse is the case in 
the female, the intraocular space being comparatively narrow in this sex of X. drew- 
ramus. ‘Though apparently collected in company with X. trifasciatus in two localities, 
there can be no doubt of its specific distinctness. 
