OTIDOCEPHALUS. 263 
One specimen. This insect has an abundant, fine, blackish setosity, as in O. hystri- 
cosus, but there are very few intermixed white hairs; the elytra are also much 
smoother, with the interstices uniseriate-punctate, and the prothorax is longer and 
relatively broader. It is a little more elongate than O. albomarginatus and has less 
convex elytra. 
64. Otidocephalus crinitus, sp. n. 
Moderately elongate, narrow, piceous (immature), shining ; sparsely clothed with long, bristly, white hairs, 
which on the elytra are suberect, intermixed on the disc with a few blackish sete, and arranged in a 
single series along each interstice, becoming more numerous towards the apex, the vestiture of the 
scutellum, legs, and under surface white. Head rather coarsely punctate, the eyes large, prominent, and 
widely separated ; rostrum stout, much shorter than the prothorax, punctato-sulcate. Prothorax mode- 
rately long, convex, much narrowed and constricted behind, somewhat coarsely punctate, a narrow space 
along the middle and a large space on the flanks impunctate. Elytra oblong-oval, much wider than the 
prothorax, gradually widening to the middle, not very convex, the humeri a little swollen, and obliquely 
truncate in front; distinctly seriate-punctate, the punctures closely placed, the interstices very minutely 
uniseriate-punctate. Fifth ventral segment bisinuate at the apex, the apical margin slightly produced in 
the middle. Legs comparatively short and stout; femora each with a small narrow tooth; anterior 
tibie strongly sinuate within. 
Length 4, breadth 13 millim. (@.) 
Hab. Mexico, Toxpam (Sal/é), 
One immature specimen, incorrectly named O. albomarginatus, Chevr., in the Sallé 
collection. Distinguishable by its oblong-oval form, the bristly white hairs of the 
elytra, and the small femoral tooth. The elytral vestiture is very like that of O. ericius 
and O. longicollis, from which the present species differs in its small size and less 
elongate shape, the relatively larger eyes, and the narrow femoral tooth. 
65. Otidocephalus flavipennis. 
Otiocephalus flavipennis, Chevr. Ann. Soc. Ent. Fr. 1832, p. 106, t. 3. figg. 4, 4 a’. 
Otidocephalus flavipennis, Schénh. Gen. Cure. iii. p. 367°; op. cit, vil. 2, p. 207°; Chevy. Ann. 
Soc. Ent. Fr. 1877, p. 179°. 
Hab. Mrxico23 4, Orizaba (coll. Chevrolat 1), Toxpam (Sa//é). 
There is a single, broken, immature specimen of this species in the Sallé collection. 
It is easily distinguishable by its peculiar coloration, the head and prothorax being 
black, and the elytra and the rest of the body testaceous; the basal margin of the 
prothorax is thickly clothed with white pubescence, and the rest of the upper surface 
with long scattered setee; the elytra are seriate-punctate ; the femoral tooth is small 
and spiniform. 
66. Otidocephalus boops. (Tab. XIII. fig. 26, ¢ -) 
Otidocephalus boops, Rosensk. in Schénh, Gen. Cure. vil. 2, p. 204". 
Moderately elongate, black, shining ; clothed with scattered, erect, blackish sete, which on the elytra are 
