ANTHIOUS. 241 
31. Anthicus dilaticollis. 
Moderately elongate, of a uniform testaceous or fusco-testaceous colour, the suture of the elytra often infuscate 
for a short distance before the apex, thickly clothed with fine decumbent pubescence. Head large and 
broad, somewhat angularly extended on either side behind (the sides parallel immediately behind the eyes), 
closely and rather coarsely punctured, with a smooth central line, the occiput slightly impressed, the eyes 
black and moderately prominent; antenne short, about reaching the base of the prothorax, testaceous ; 
prothorax moderately convex, about as broad as (or rather broader than) long, as wide as the head, widest 
in front and obliquely narrowing thence to the base, the surface densely and finely punctured, the base 
obsoletely margined ; elytra comparatively short, a little rounded at the sides, the humeri obtuse but 
moderately prominent, the base slightly emarginate, the surface densely but less finely punctured than 
that of the prothorax ; legs entirely testaceous ; fifth ventral segment truncate in the male. 
Length 13-23 millim. (¢ 9.) 
Hab. Mexico, Ventanas (Forrer, in coll. Oberthiir), Guanajuato, Soledad (Sal/é), 
Vera Cruz (Hoge); Guatemaua (Sallé), San Gerénimo, Duefias (Champion). 
Thirteen examples. Larger and more elongate than A. exiguus, the elytra relatively 
longer and less ovate; also closely allied to the N.-American A. ictericus, La Ferté, but 
differing from that species in its more coarsely punctured head. From A. spretus, Lec., 
a specimen of which from Arizona has been communicated by Dr. Horn, it may be 
known by the thorax being broader in front and more transverse, the head less coarsely 
punctured, and the elytra less elongate. A. lugubris, La Ferté, from California, also 
resembles A. dilaticollis, but differs from it in its black colour and smaller eyes. 
32. Anthicus basimacula. (Tab. X. fig. 21.) 
Moderately elongate, black, the shoulders of the elytra broadly testaceous, slightly shining, thickly clothed with 
fine, ashy, appressed pubescence. Head large and broad, somewhat angularly extended on either side 
behind, densely and finely punctured, with a smooth central line, the occiput distinctly impressed ; the 
eyes moderately prominent, rather small; the palpi testaceous ; antennx short, barely reaching the base 
of the prothorax, entirely testaceous ; prothorax moderately convex, about as broad as long, rather wider 
than the head, widest in front and obliquely narrowing thence to the base, the surface densely and finely 
punctured, the disc with an obsolete median groove behind the middle ending in a distinct impression 
before the base, the base feebly margined ; elytra moderately long, a little rounded at the sides, subparallel 
in front, the humeri rounded but rather prominent, the surface very closely punctured, the punctuation 
coarser than that of the prothorax ; legs testaceous, the femora slightly darker. . 
Length 24 millim. 
Hab. Mexico, Aguas Calientes city ( Hoge). 
One example only, apparently a female. In the elytral markings this insect 
resembles the European A. fenestratus, Schmidt; it is perhaps nearest allied to 
A. dilaticollis. 
33, Anthicus pauxillus. (Tab. X. fig. 22.) 
Moderately elongate; the head and prothorax varying in colour from ferruginous to piceous ; the elytra testa- 
ceous, with a broad transverse median fascia (not quite reaching the suture) and an apical patch piceous 
or black, these markings usually connected along the lateral margin and near the suture (thus enclosing a 
spot of the ground-colour) ; the upper surface shining and finely pubescent. Head very large, strongly 
BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 2, October 1890. 2II 
