184 HETEROMERA. 
punctured and without sutural or post-humeral depression ; beneath, the prothorax excepted, black ; legs 
(dS) slender, rather short, testaceous ; the hind femora flattened and considerably wider than the others, 
not excavate on the inner edge; the tibiw straight, the hind pair flattened and dilated from the base 
to the apex. 
Length 13 millim. (<¢.) 
Hab. Mzxtco, Chilpancingo in Guerrero 4600 feet (H. H. Sinith). 
One male example. In the form of the head and antenne this minute species 
resembles X. unifasciatus. The hind femora and hind tibie are flattened and dilated, 
the former simple and not excavate along their inner edge. The short, broad, 
convex form and elytral markings distinguish it from all others of the genus here 
enumerated. 
X. ventricosus, Lec., has similarly inflated elytra. 
27. Xylophilus laticollis. 
Short and very broad, convex, finely and densely pubescent ; the head black, testaceous in front; the prothorax 
and scutellum fusco-ferruginous ; the elytra obscure testaceous, with a broad brownish fascia before and 
a narrower one beyond the middle, the pubescence on the light parts ashy in colour (forming three 
transverse bands), that on the fascie sparser and darker. Head large and broad, densely punctured ; 
eyes moderately large, pubescent, somewhat finely granulated, occupying the whole of the side of the 
head and laterally projecting (the head not at all extended behind them), very widely separated, some- 
what feebly emarginate; antenne short, slender, widening a little outwardly, testaceous, joint 2 stout 
and moniliform, 3 much more slender and very little longer than 2, 3-5 about equal in length, 6-10 
gradually becoming shorter and wider, 10 transverse, 11 stouter than, and about twice as long as, 10, 
ovate, acuminate ; prothorax strongly transverse, fully as wide at the base as the head, narrowing almost 
from the base, densely and finely punctured ; elytra comparatively short and broad, widest about the 
middle, the sides a little rounded, the surface slightly shining, very closely and finely punctured, and 
without sutural or post-humeral depression; beneath, the prothorax excepted, piceous; legs slender, 
rather short, testaceous, the hind femora only a little stouter than the others, the tibiee almost straight. 
Length 2 millim. 
Hab. Mexico, Chilpancingo in Guerrero 4600 feet (H. H. Smith). 
One example, apparently a female. .X. Jaticollis resembles X. unifasciatus and 
X. inflatus in the shape of the head, and the eyes project in a similar manner. The 
thorax is dull ferruginous and very strongly transverse; the elytra are even broader 
than in X. inflatus, testaceous in colour, with a broad brownish fascia before and a 
narrower one beyond the middle, the testaceous parts being densely clothed with ashy 
pubescence ; the legs are short, slender, and testaceous, the hind femora very little 
stouter than the others. 
28. Xylophilus corticarioides. 
Short and convex, obovate, piceous-black, the base of the elytra brownish, rather shining, the entire surface 
uniformly clothed with fine, ashy, appressed pubescence. Head moderately large, closely and finely punc- 
tured ; eyes small and prominent, entire, very widely separated, finely granulated, the head narrowly 
extended on either side behind them and with rather prominent hind angles ; antenne short, very slender, 
widening a little outwardly, testaceous, joint 2 about half the length of 1, 3 one and a half times the 
length of 2, 4 shorter than 3, 4-7 elongate, subequal, 8-10 wider, 10 about as broad as long, 11 stouter 
