244 HETEROMERA. 
finer. The upper surface is entirely black, very shining, and with very fine, short, 
scattered pubescence, which is easily abraded, so that the insect appears to be almost 
glabrous. 
38. Anthicus horridus. 
Anthicus horridus, Lec. Ann. Lye. N. York, v. p. 1547; Proc. Acad. Phil. vi. p. 98°. 
Hab. Nortu America, Gila river !2—Muxtco, Nuevo Laredo in Tamaulipas (Hége). 
A single example captured on our northern boundary by Herr Hoge during his 
second expedition agrees very well with Leconte’s diagnosis *:—‘ Elongatus, testaceus, 
pilis longis erectis hispidus, capite postice rotundato thoraceque grosse punctatis, hoc 
longiusculo subcampanulato, elytris grosse punctatis, fascia obscura pone medium 
ornatis. Long. °11.” 
39. Anthicus macrocephalus. (Tab. X. fig. 24.) 
Elongate, of a uniform fusco-testaceous colour, shining, thickly clothed with long, rather coarse, decumbent 
whitish pubescence. Head convex, comparatively elongate, narrow, rounded at the sides behind, thickly 
and finely punctured, a longitudinal space down the middle smooth, the occiput unimpressed, the eyes 
black, large, and somewhat prominent ; antenne moderately long, rather slender, entirely testaceous ; pro- 
thorax convex, rather longer than broad, very little narrower than the head, the sides gradually and 
obliquely converging from the middle and slightly dilated at the extreme base, the base shallowly grooved 
within, the surface densely and finely punctured; elytra elongate-oval, about twice the width of the 
prothorax, feebly depressed on either side of the suture towards the apex, without post-basal depression, 
the humeri rounded but rather prominent, the surface densely and somewhat coarsely punctured, the punctu- 
ation becoming very much finer beyond the middle ; legs entirely testaceous ; fifth ventral segment simply 
truncate in the male. 
Length 24 millim. (<¢.) 
Hab. Mexico, Teapa in Tabasco (H, H. Smith), Yucatan (coll. Oberthiir). 
Two examples. Amongst the species described by La Ferté, 4A. macrocephalus is 
nearest allied to A. pusillus, from which it differs by the much narrower and longer 
head, the much longer and entirely testaceous antenne, and the longer thorax. The 
comparatively narrow elongate head distinguishes the species from all the other Central- 
American representatives of this section of the genus. 
40. Anthicus lutescens. 
Moderately elongate, of a uniform testaceous or fusco-testaceous colour, rather shining, somewhat thickly 
clothed with fine, decumbent, yellowish pubescence. Head transverse, convex, rounded at the sides 
behind, subtruncate at the base, closely and finely punctured, and with a smooth central line, the occiput 
not or very faintly impressed; the eyes black, moderately large, not very prominent; antennz testaceous, 
extending a little beyond the base of the prothorax, slender, thickening outwardly ; prothorax convex, as 
long as broad, a little narrower than the head, broadest in front, the sides gradually and obliquely con- 
verging posteriorly and a little dilated at the extreme base, the base finely margined towards the sides, 
the surface densely and finely punctured; elytra moderately long, a little rounded at the sides, the humeri 
rounded, the base feebly emarginate and slightly swollen on either side of the scutellum, the surface very 
