174 | HETEROMERA. 
the second fascia), which are connected along the suture by a line of similar pubescence. Head large and 
broad, very densely and finely punctured; eyes very hairy, large, contiguous in the male, narrowly sepa- 
rated in the female, coarsely granulated, deeply emarginate, the head in both sexes somewhat broadly 
extended on either side behind them and rounded externally ; antenne piceous or fusco-ferruginous, with 
the apical joint and one or more of the basal ones ferruginous, sometimes in great part ferruginous, densely 
pubescent, in both sexes exceedingly stout—(¢ ) moderately long, widening a little outwardly, joint 2 
more than half the length of 3, 3-9 about equal in length, 9 and 10a little shorter, 11 three times as long 
as 10, slightly curved—(¢) shorter, more thickened outwardly, joints 8-10 transverse, 11 about twice 
the length of 10, ovate ; prothorax narrower than the head, rather convex, as long as broad (a little longer 
in the male than in the female), the sides rounded and converging in front, straight behind, the surface 
punctured like that of the head ; elytra broad, parallel to about the middle, with a very shallow oblique 
depression (sometimes obsolete) extending from the shoulders downwards, the surface densely, coarsely, 
and rather shallowly punctured ; legs densely pubescent, moderately long, reddish- or fusco-testaceous, 
the tarsi paler; the four anterior tibie sinuously curved in both sexes, strongly so in the male, the front 
and middle pairs with a long sharp tooth on the inner side at the apex in the male, the hind pair with 
a matted spine-like tuft of fulvous hairs at the outer apical angle in the female; the femora rather slender, 
the hind pair in the male very broadly widened, grooved on their inner edge, and the concavity filled 
with a row of short fulvous hairs. 
Length 23-22 millim. (3 9.) 
Hab. Panama, Bugaba, Volcan de Chiriqui 3000 feet (Champion). 
Six examples, three of each sex. Smaller than X. lacertosus; the eyes contiguous 
in the male, more narrowly separated in the female ; the elytra differently marked, the 
ashy pubescence forming transverse bands instead of longitudinal streaks; the legs 
almost unicolorous reddish-testaceous. The sexual characters are very similar. 
9. Xylophilus humeralis. (Tab. VIII. fig. 9, ¢.) 
Moderately elongate, parallel, broad, robust, opaque, very thickly clothed with rather long, fine, semierect pube- 
scence; black, the shoulders of the elytra reddish or testaceous, the pubescence along the edge of the suture 
ashy, and a longitudinal stripe of similarly-coloured pubescence running down from the humeral spot. Head 
very large in the male, a little smaller in the female, densely and roughly punctured; eyes very hairy— 
exceedingly large, coarsely granulated, and contiguous in the male, smaller, more finely granulated, and 
narrowly separated in the female,—deeply emarginate, the head in both sexes extended on either side 
behind them, but more broadly so in the female, and rounded externally ; antenne entirely black, densely 
clothed with long pubescence, exceedingly stout in both sexes—(¢) long, extending to far beyond the 
middle of the elytra, filiform, joint 2 a little shorter than 3, 3 considerably shorter than 4, 4-10 much 
longer than broad, and about equal in length, 11 two a half times as long as 10, slightly curved—( ? ) 
much shorter, widening outwardly, joint 2 a little shorter than 3, 3 as long as 4, 5-8 gradually wider, 
9 and 10 transverse, 11 ovate and nearly twice as long as 10; prothorax rather convex, narrower than the 
head, as long as broad, the sides rounded and converging in front, straight behind, the surface punctured 
like that of the head ; elytra nearly twice as wide as the prothorax, parallel to about the middle, densely 
and coarsely punctured ; legs moderately long, piceous, the outer joints of the tarsi more or less testaceous , 
the four anterior tibie sinuously curved in the male, feebly so in the female, the front pair with a sharp 
tooth on the inner side at the apex in the male, the hind pair with a matted spine-like tuft of fulvous hairs 
at the outer apical angle in the female; the femora rather slender (the hind legs in the male broken off). 
Length 3 millim. (¢ 2.) 
Hab. Panama, Volcan de Chiriqui 3000 feet (Champion). 
One specimen only of each sex. In this species the antenne are even stouter than 
in X. lacertosus &c.; these organs are very long in the male (longer than in the same 
