XYLOPHILUS. 169 
the suture very narrowly castaneous; the upper surface thickly clothed with rather long, somewhat 
coarse, decumbent pubescence, the pubescence variegate (yellowish on the light-coloured parts and darker 
elsewhere) and on the prothorax forming two irregular stripes on the disc and a marginal fringe at the 
sides behind (the hairs longer here and almost forming atuft). Head large and broad, densely and roughly 
punctured ; eyes (¢) hairy, very coarsely granulated, exceedingly large, occupying the whole of the 
lateral portion of the head (viewed from behind the head appears to be very narrowly and subangularly 
extended on either side beneath them), contiguous, very deeply emarginate; antenne (¢ ) extending 
quite to the end of the elytra, rather slender, joint 1 stout, 2 transverse, stout, 3 nearly four times as 
long as 2, 4 about two-thirds the length of 3, 4-10 very gradually increasing in length, and each furnished 
on the inner side with an exceedingly long and slender ramus, 11 nearly two-and-a-half times as long 
as 10, thickening from the base to far beyond the middle, and then very abruptly constricted and slender 
to the apex, 4-10 in great part (the rami excepted) testaceous, the rest more or less piceous, all the 
joints (the rami included) thickly clothed with long fine hairs; prothorax moderately convex, much 
narrower than the head, about as long as broad, the sides converging from the middle, almost straight at 
the base, the disc obsoletely canaliculate, the surface very densely and finely punctured; elytra long, 
very much wider than the prothorax, parallel, flattened on the disc, and with a broad and rather deep 
oblique depression extending from the shoulders downwards towards the suture, the suture also depressed 
at the base, the surface rather shining, densely and coarsely punctured, the punctures finer at the extreme 
base; legs (including the tarsi) comparatively very elongate, the hind femora incrassate, piceous, the four 
anterior tibiee beneath and the bases of the femora lighter, the tarsi and the knees (narrowly) testaceous 
or fusco-testaceous; the tibiee almost straight, the hind pair only a little curved at the base, the front 
pair with a short tooth on the inner side at the apex. 
Length 34 millim. (d.) 
Hab. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith). 
Two male examples of this exceedingly distinct species were captured by Mr. Smith 
during his expedition to Western Mexico. X. flabellatus and the following five species 
belong to the same section of the genus as the North-American X. melsheimeri, Lec. 
The fringe of long hairs at the sides of the thorax behind extend to the shoulders of 
the elytra, and resemble, at first sight, acute hind angles. In this and the allied species 
the dark parts of the elytra are apparently almost bare; but when examined under a 
strong lens, the dark pubescence is easily seen. The eyes are clothed with short, fine 
erect hairs. The pattern of the elytra is different from that of X. melshewmeri. 
2. Xylophilus ramosus. 
Moderately elongate, parallel; head black; prothorax reddish-testaceous; elytra brownish-yellow, with an 
interrupted fascia just below the base, a longitudinal extension of which runs some distance down the 
suture, a broad, much interrupted fascia about the middle (formed by four partly confluent longitudinal 
streaks on each elytron), and a very narrow transverse streak near the suture some distance before the 
apex, piceous, the base and shoulders and the narrow dividing spaces of the median band brown; the pube- 
scence long, that on the light parts ashy in tint. Head moderately large, densely and roughly punctured, 
and with a smooth central line on the vertex; eyes (¢ ) hairy, very large, moderately coarsely granulated, 
narrowly separated, very deeply emarginate ; antenne (<¢ ) reaching to beyond the middle of the elytra, 
hairy, joint 3 nearly four times as long as 2, 4 barely half the length of 3, 4-10 gradually increasing in 
length, and each with an exceedingly long and slender ramus, 11 about three times as long as 10, much 
thickened beyond the middle, and then abruptly constricted and narrow to the apex, all the joints testa- 
ceous, 1, the apical half of 11, and the tips of the rami slightly infuscate ; prothorax moderately convex, 
narrower than the head, about as long as broad, the sides converging from the middle, straight behind, 
the surface densely and finely punctured; elytra long, very much wider than the prothorax, parallel, a 
little flattened on the disc, and with a broad oblique depression extending from the shoulders downwards 
BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 2, June 1890. ZZ 
