264 RHYNCHOPHORA. 
arranged in a single series on each of the interstices 1, 3, 5, and 7, the base of the prothorax, the scutellum, 
legs, and under surface with white hairs, the legs with a few blackish ones intermixed. Head almost 
smooth, constricted behind the eyes, which are very large, prominent, and almost contiguous above; 
rostrum very stout, shorter than the prothorax, rugosely punctate, smooth along the middle, the scrobes 
straight. Prothorax long, globose in front, narrowed and constricted behind, the surface with a few 
minute scattered punctures, a space on the flanks impunctate. Elytra comparatively short, convex, 
subparallel in their basal half, much wider than the prothorax, the humeri obliquely truncate in front 
and rather prominent; very finely seriate-punctate, the alternate interstices each minutely uniseriate- 
punctate. Femora each with a small, narrow, acute tooth. Anterior tibie sinuate within. 
Length 33-32, breadth 13-13 millim. 
Hab. Mexico, between Oaxaca and Acapulco! (Mus. Holm.), Oaxaca (Hége). 
Two specimens, agreeing with the type, which I have seen. In this small species 
the eyes are very large, prominent, and almost contiguous above, the elytra are very 
little wider at the middle than at the base, and the femoral tooth is small and narrow, 
these characters separating O. boops from most of its allies with blackish sete only 
on the elytra. O. levicollis, Horn, which ranges from New York to Texas, is very 
like the present species; but in the former the head is not constricted behind the 
eyes, the elytra are less finely seriate-punctate, and the blackish sete are intermixed 
with bristly white hairs. O. megalops has the eyes less approximate and the front 
foveate. 
67. Otidocephalus crassirostris, sp.n. (Tab. XIII. fig. 27, 3.) 
Moderately elongate, shining, black, the antenne (the club excepted) ferruginous, the tarsi piceous or rufo- 
piceous ; clothed with long, scattered, erect, blackish sete, which on the elytra are arranged in a single 
series along each of the dorsal interstices, the head, the base of the prothorax, the scutellum, and under 
surface with white hairs, the legs with intermixed white and blackish hairs. Head almost smooth, the 
eyes very large and subcontiguous; rostrum short, exceedingly stout, curved above (when viewed in 
profile), punctato-sulcate at the sides and apex, smooth along the middle, and with a short median sulcus 
towards the tip, the scrobes sinuous and very deep; antennz with joints 2-7 of the funiculus subequal in 
length, the club ovate. Prothorax long, globose in front, narrowed and constricted behind, the base 
coarsely punctate, the rest of the surface with minute widely-scattered punctures. Elytra moderately 
long, convex, much wider than the prothorax, widening to the middle, the humeri obliquely truncate in 
front; the surface almost smooth, the usual seriate punctures obsolete or indistinct. Femora each with 
a narrow, acute tooth. Anterior tibie strongly sinuate within. 
Length 31-34, breadth 13-13 millim. (d 2.) 
Hab. Panama, Bugaba, Volcan de Chiriqui (Champion). 
Numerous examples. The extremely stout, short rostrum, with deep sinuous 
scrobes, the large, subapproximate eyes, the almost smooth elytra, with blackish sete, 
and the narrow femoral tooth, distinguish this small species from the allied forms. It 
is, however, very nearly related to O. levipennis, but the latter has a less thickened 
rostrum and the eyes more separated. ‘The less prominent eyes, the shorter rostrum, 
with sinuous scrobes, and the smoother elytra, separate it from the Mexican 
O. boops. 
