OTIDOCEPHALUS. 243 
22. Otidocephalus brevicollis, sp. n. 
Moderately elongate, black, shining ; clothed with short, decumbent, rather coarse, white, squamiform hairs 
and long, erect, blackish sets, the hairs on the elytra intermixed with the sete and arranged in two 
or three rows on each interstice, the vestiture of the scutellum and under surface white, the legs with 
intermixed white and blackish hairs. Head sparsely punctate, the eyes large and somewhat widely 
separated ; rostrum moderately stout, shorter than the prothorax, rugosely punctured at the sides, smooth 
and subcarinate along the middle. Prothorax slightly longer than broad, narrowed in front and behind, 
very sparsely, irregularly punctate, a space on the flanks almost smooth. Elytra moderately long, convex, 
gradually widening to the middle and here nearly twice as wide as the prothorax, subtruncate at the 
base, longitudinally depressed on each side of the suture anteriorly ; rather coarsely seriate-punctate, 
the punctures placed in shallow stris, the interstices almost flat and each bi- or triseriately punctate 
from the base to the apex. Femora each with a very large triangular tooth. Anterior tibie sinuate 
within. Tarsal claws with a sharp tooth. 
Length 43, breadth 271, millim. (9.) 
Hab. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith). 
One specimen. The comparatively short prothorax, the wide elytra, with somewhat 
abundant, coarse, white, squamiform pubescence and long, erect, black sete, the very 
large femoral tooth, &c., will serve to distinguish this species. In general facies it 
resembles 0. canescens, O. albolineatus, O. foveifrons, &c. 
23. Otidocephalus villosus, sp. n. 
Elongate, shining, black, the antenne (the club excepted) ferruginous; clothed with an abundant, intermixed, 
erect, long, fine blackish setosity and decumbent, white hairs, the latter arranged on the elytra in an 
irregular single or double row throughout the length of each interstice, the vestiture of the under surface 
white. Head coarsely, closely punctate, the eyes moderately large and somewhat widely separated ; 
rostrum stout, much shorter than the prothorax, punctato-sulcate, subcarinate along the middle; antenne 
with joints 2-7 of the funiculus equal in length, 2 one-half the length of 1, the club ovate. Prothorax 
moderately long, narrowed in front and behind, closely, coarsely punctate, except along a narrow space 
down the middle. Elytra long, moderately convex, much wider than the prothorax, widening to the 
middle, subtruncate at the base ; rather coarsely punctate-striate, the interstices feebly convex, minutely 
uni- or biseriate-punctate. Legs stout; femora each with a very large, acute, triangular tooth ; anterior 
tibie strongly sinuate within, appearing subangularly dilated a little beyond the middle. 
Length 43-5, breadth 13-2 millim. (¢?) 
Hab. Mexico, Sierra de Durango? (ex coll. Flohr), Cuernavaca (H. H. Smith). 
Two specimens. Very like 0. hystricosus, but with the femoral tooth much larger, 
the anterior tibie dilated beyond the middle, the prothorax closely and coarsely 
punctured (except along the median line), the white hairs on the upper surface finer. 
The shorter second joint of the funiculus, the more abundant setosity, and the less 
closely punctured elytral interstices distinguish it from O. duplicatus. The description 
is made from the example from the Flohr collection, the other having less coarsely 
seriate-punctate elytra, with the interstices flat, and also differing in some minor details. 
24. Otidocephalus duplicatus, sp. n. 
Elongate, shining, nigro-piceous, the elytra piceous, the antenne (the club excepted) ferruginous ; somewhat 
thickly clothed with decumbent white pubescence and intermixed, scattered, semierect, rigid, blackish 
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