168 HETEROMERA. 
others the head extended behind them), more or less pubescent; 
sexual distinctions usually very pronounced. 
Antenne flabellate in the male; shorter, simple, and with the apical joint 
acuminate-ovate in the female ‘ . as ote 
Antenne stout, filiform or subfiliform, and with the apical joint elongate 
in the male; thickened outwardly, and with the apical joint ovate 
in the female. 
Third antennal joint distinctly longer than the second. . . . 
Second and third antennal joints subequal, or the third very little 
longer than the second . . ; s : 
Antenne (except in X. laticeps) slender or saodetately slender, and with 
the apical joint acuminate-ovate in both sexes, the apical joint 
usually a little longer in the male than in the female. 
Upper surface shining, clothed with rather coarse, long, semierect 
pubescence ; head broad; eyes large, moderately or narrowly 
separated . . . . oe ee 
Upper surface shining, finely vubescent ; head broad ; eyes large, some- 
what widely or narrowly separated . . . . _ 
Upper surface shining, finely pubescent; head rather narrow; eyes 
small, somewhat widely separated . an - 
Upper surface opaque or slightly shining, finely pubescent ; head 
broad ; eyes very widely separated. . . - oe 8 
Upper surface opaque, pruinose; head broad; eyes lrg, al 
separated 
Antenne (¢) with joints 1-3 ‘vather slender, and ‘41 ‘stout (4-10 
flattened and subtriangular, longer than broad, 11 a little longer 
than 10); head broad ; eyes large ; thorax with four depressions, 
opaque ; upper surface clothed with fine appressed pubescence ; 
hind femora () exceedingly stout . fo. . 
Sides of the thorax more or less dilated in front (very feebly so in x. argen- 
tatus) and compressed at the middle ; eyes small in both sexes, finely 
granulated, distant from the base of the head, almost bare; upper 
surface opaque and densely clothed with fine appressed pubescence ; 
sexual distinctions slight. 
Body elongate and Anthiciform . an 
Body short and broad . . . 2... . . 
Second and third antennal joints very short, subequal, the two together shorter 
than the fourth . . 2. 2. 1. 1 1 1 ww ew ee 
1. Xylophilus flabellatus. (Tab. VIII. fig. 1, 3.) 
Species 1-6. 
Species 7, 8. 
Species 9-13. 
Species 14-21. 
Species 22, 23. 
Species 24. 
Species 25-28. 
Species 29. 
Species 30. 
Species 31-34. 
Species 35. 
Species 36. 
Elongate, parallel, rather depressed ; pitchy-black ; the prothorax on all sides (narrowly) reddish-brown ; the 
elytra with an irregular zigzag fascia before the middle (formed by an elongate A-shaped mark on the 
disc, and an oblique one near the suture) and a broad fascia before the apex, the latter nearly or quite 
enclosing an obliquely placed quadrangular patch of the ground-colour on each elytron near the suture 
(the anterior edge of the fascia angulate, the hinder edge straight), light castaneous or brownish-testaceous, 
