188 HETEROMERA. 
band on either side of the disc (transversely connected a little behind the middle, confluent in front, 
and extending inwards at the base), enclosing two narrow transverse greyish marks, and for the rest 
grey; the scutellum grey; the elytra olivaceous, with a narrow well-defined sutural stripe, which is 
widened towards the apex, and the shoulders and lateral margins, narrowly, bluish-grey. Head moderately 
large, rather long, very closely and finely punctured, and with a smooth central line; eyes not very large, 
prominent, distant from the base of the head (the head broadly extended behind them and rounded late- 
rally), widely separated, rather deeply emarginate, finely granulated ; antenne rather short, moderately 
stout, widening outwardly, piceous, the two basal joints and the apical one lighter, joint 2 short, half the 
length of 3, 4 much shorter than 3, 4-10 subtriangular, gradually becoming shorter and wider, 9 and 10 
broader than long, 11 stouter and much longer than 10, ovate, acuminate ; prothorax about as long as 
broad, a little wider than the head, the sides dilated in front, somewhat compressed behind this, and thence 
gradually converging to the base, the base feebly sinuate on either side, the disc obsoletely canaliculate 
and with a transverse depression before the base, the surface densely and finely punctured ; elytra at the 
base about one half broader than the prothorax, long, parallel, flattened on the disc and broadly and 
shallowly transversely depressed below the base, closely and somewhat coarsely punctured, the space 
occupied by the sutural stripe smoother; beneath blackish-brown, very densely clothed with greyish 
pruinose pubescence ; legs long, moderately slender, blackish, the tarsi and the front tibiee lighter, densely 
clothed with greyish pruinose pubescence, the hind femora simple, the tibie almost straight. . 
Length 3 millim. . 
Hab. Panama, Bugaba (Champion). 
One specimen, probably a female. X. sutwralis is quite unlike any other species of 
the genus known to me. In its elongate Anthiciform shape it approaches Y. argen- 
tatus and X. anthicoides. The thorax is distinctly wider than the head, and broadest 
in front; the antenne have their joints 4-10 subtriangular; the elytra are long and 
parallel and flattened on the disc; the surface is covered with a pruinose pubescence, 
which does not (as in X. argentatus) completely hide the punctuation. The peculiar 
arrangement and colour of the pubescence on the elytra—the suture, lateral margins, 
and shoulders being bluish-grey and the rest of the surface olivaceous—is very 
characteristic. 
34. Xylophilus anthicoides. (Tab. VIII. figg. 26, ¢; 26a, labium; 264, 
maxilla and maxillary palpus; 26, abdomen.) 
Elongate, subparallel, black or dark brown (the humeri or sometimes the entire elytra paler), and shining when 
denuded of pubescence, the latter exceedingly dense and closely appressed and variable in colour—usually 
dark brown or coppery-brown, but sometimes lighter or even variegate, owing to an admixture of yellowish- 
white pubescence; the head usually with the sides and a central line yellowish-white ; the prothorax 
with a narrow sinuous line at the sides, enclosing a brown spot anteriorly, two small oblique spots in the 
middle behind, and a median line in front whitish or yellowish-white; the scutellum whitish; the elytra 
each with an oblique spot on the disc before the middle, the suture very narrowly in some specimens, the 
lateral margins, and a large oblique H-shaped mark, confluent at the suture close to the apex, white or 
yellowish-white (a line of this colour extending along the suture to the apex and there confluent with 
the lateral stripe, thus enclosing an oblique patch, the oblique spot on the disc usually connected with 
the lateral stripe). Head moderately large, with only a few scattered punctures (almost smooth when 
denuded of pubescence); eyes (¢ @) small, distant from the base of the head, very widely separated, 
feebly emarginate, finely granulated; antennew (¢ Q) thickly pubescent, rather short, varying in colour 
from piceous-brown to testaceous, moderately slender, thickening outwardly, joint 2 short, rather more 
than half the length of 3, 3-10 gradually decreasing in length and increasing in width, 10 as broad as 
long, 11 considerably longer and stouter than 10, ovate, acuminate ; prothorax a little narrower than the 
