258 RHYNCHOPHORA. 
a few fine scattered punctures, a large space on the flanks impunctate. Elytra moderately long, convex, 
flattened on the disc anteriorly, very much wider than the prothorax, rapidly widening to the middle, 
and there fully twice its width, conjointly emarginate at the base, the humeri very obtuse; finely 
punctate-striate, the interstitial punctures scarcely visible. Femora each with a short triangular tooth. 
Anterior tibie strongly sinuate within. 
Length 6, breadth 24 millim. (9 ?) 
Hab. Nricaracva, Chontales (Belt). 
One specimen. This insect resembles 0. apioniformis, but has the prothorax much 
narrowed behind and cylindrical in front, the elytra hollowed at the base and with 
very obtuse humeri. The smaller femoral tooth and the absence of the regular rows 
of white hairs on the apical declivity of the elytra separate it from O. divisus. 
54. Otidocephalus gibbicollis, sp. n. 
Moderately elongate, shining, black, the legs and antenne picecus ; sparsely clothed with long, erect, blackish 
sete, which on the elytra are arranged in a row along each interstice and are intermixed with a few 
white hairs at the apex; the vestiture of the scutellum and under surface white, the legs with intermixed 
white and blackish hairs. Head almost smooth, the eyes large and rather widely separated; rostrum 
stout, shorter than the prothorax, punctured and bisulcate at the sides, smooth along the middle. 
Prothorax long, narrow, and laterally compressed, gibbous anteriorly, narrowed behind, the surface with 
a few widely scattered fine punctures. Elytra moderately long, somewhat gibbous, much wider than the 
prothorax, widening to the middle, the humeri obliquely truncated in front ; very finely seriate-punctate, 
’ the. punctures not very closely placed, the interstices each with a scattered row of minute setigerous 
impressions. Femora each with a rather small, acute, triangular tooth. Anterior tibie feebly sinuate 
within. 
Length 44, breadth 17 millim. 
Hab. Mexico, Sierra de Durango? (ex coll. Flohr). 
One specimen. The relatively long, narrow, gibbous prothorax, the rather short, 
inflated, very finely seriate-punctate elytra, the long blackish setosity, and the short trian- 
cular femoral tooth, are the chief characters of this obscure species, The less rounded 
sides of the prothorax and the smaller femoral tooth separate O. gibdicollis from 
O. longipilis; and the shorter elytra, with more prominent humeri and longer sete, 
distinguish it from O. angusticollis. 
55. Otidocephalus adspersus, sp. n. 
Elongate, shining, black, the funiculus reddish; the head and prothorax clothed with fine, scattered, blackish 
and white hairs, the elytra with a row of erect blackish sete along each interstice, intermixed with 
scattered, squamiform, white hairs, the vestiture of the scutellum and under surface white, the legs 
with intermixed white and blackish hairs. Head sparsely punctate, the eyes moderately large and some- 
what widely separated; rostrum in the 9 nearly as long as the prothorax, shorter in the ¢, punctato- 
sulcate at the sides, smooth along the middle; antenne with joint 2 of the funiculus much longer than 3, 
the club oblong-ovate and nearly as long as joints 2-7 united. Prothorax long, subcylindrical in front, 
much narrowed behind, very sparsely, coarsely punctate on the dise (more closely so in the ?), the 
punctures becoming crowded at the base, a space on the flanks impunctate in the d. Elytra moderately 
long, much wider than the prothorax, convex, flattened on the disc at the base, gradually widening to 
to the middle, the humeri obliquely truncate in front; punctate-striate, the interstices flat or feebly 
