ANTHICUS. 231 
12. Anthicus dilatipes. (Tab. X. fig. 10, 3.) 
Elongate, shining, finely and sparsely pubescent, the head and prothorax reddish-testaceous, the elytra piceous. 
‘Head strongly transverse, a little rounded at the sides behind, sparsely and very minutely punctured ; 
the eyes large and prominent, black; antenne moderately long, testaceous ; prothorax longer than broad, 
narrower than the head, the sides very much constricted behind the middle and thence to the base parallel, 
the anterior portion transversely convex, the posterior portion cylindrical, the flanks deeply excavated, 
the base feebly margined, the surface minutely and somewhat closely punctured ; elytra long, widest at 
the middle, subparallel in front, with a very shallow transverse post-basal depression, sparsely and very 
finely punctured, the punctuation becoming very minute towards the apex; legs fusco-testaceous, the 
base of the femora and the tarsi testaceous, the femora moderately clavate; fifth ventral segment truncate, 
and the hind tibize on the inner side gradually dilated to beyond the middle and then abruptly narrowed 
and concave to the apex, in the male. 
Length 23 millim. (¢.) 
Hab. Mexico, Chilpancingo in Guerrero (H. H. Smith). 
One male example. This species approaches A. obscurus and the allied forms, but 
differs from these in the strongly dilated posterior tibiz in the male. The elytra have 
a very shallow post-basal depression, and the punctuation is fine and sparse. 
13. Anthicus obscurus. 
Anthicus obscurus, La Ferté, Monogr. Anthic. p. 116°; Lec. Proc. Acad. Phil. vi. p. 96’. 
Hab. Norra America, United States +, Coney I.2.—Merxico, Northern Sonora 
(Morrison). 
This insect is, I believe, widely distributed in the United States. Three examples 
received from Sonora agree with one forwarded by Dr. Horn and with the types in 
the La Ferté collection. A. obscurus has the thorax and elytra more minutely punc- 
tured than in A. occidentalis ; the elytra have a shallow post-basal depression, and are 
minutely and thickly punctured and finely pubescent ; the head is minutely punctured, 
almost smooth, strongly transverse ; the antenne are piceous, with the basal two or 
three joints lighter. The head and thorax are sometimes reddish-brown, The posterior 
tibie are slightly sinuous within, and the fifth ventral segment is truncate, in the male. 
14. Anthicus occidentalis. 
Elongate, shining, varying in colour from fusco-testaceous to piceous, the head and prothorax often reddish, 
finely pubescent. Head short, transverse, rounded at the sides behind, minutely and somewhat thickly 
punctured (in some examples more obsoletely so), the eyes prominent and moderately large ; antennse 
long, testaceous, the three or four apical joints usually infuscate; prothorax longer than broad, narrower 
than the head, the sides very strongly constricted behind the middle and thence to the base almost straight, 
the anterior portion transversely convex, the posterior portion cylindrical, the flanks with a deep exca- 
vation, the base margined, the surface finely and closely punctured ; elytra long, subparallel in their basal 
half, shallowly transversely depressed below the base and somewhat flattened beyond this, the humeri 
obtuse but rather prominent, the surface finely and somewhat closely punctured, the punctuation becoming 
coarser towards the base; legs testaceous or fusco-testaceous, the outer half of the femora sometimes 
darker, the femora clavate; fifth ventral segment truncate, and the posterior tibie slightly swollen and 
sinuous within, in the male. 
Length 24-22 millim. (¢ @.) 
Hab. Mexico, Acapulco and Cuernavaca (Hége). 
