252 RHYNCHOPHORA. 
mixed white and blackish hairs. Head sparsely, finely punctate, the eyes moderately large and widely 
separated ; rostrum not very stout, curved, nearly as long as the prothorax, depressed at the base above, 
punctato-suleate at the sides, smooth along the middle; antennx with joint 2 of the funiculus nearly as 
long as 1, 3-7 shorter, the club ovate. Prothorax long, globose in front, constricted and much narrowed 
behind, very sparsely, finely punctate, the flanks almost smooth. Elytra moderately long, much wider 
than the prothorax, very convex, flattened on the disc anteriorly, rapidly widening to the middle, the 
humeri obliquely truncated in front; very finely seriate-punctate, the interstices each with a row of 
scattered minute punctures. Femora each with a large, acute, triangular tooth. Anterior tibiw strongly 
sinuate within. 
Length 54-6, breadth 2-23 millim. (2.) 
Hab. Nicaracua, Chontales (Belt); Panama, Bugaba (Champion). 
Four specimens. The anteriorly globose, posteriorly constricted prothorax, the 
more acute femoral tooth, and the conspicuous intermixed long white pubescence at 
the apex of the elytra distinguish O. constrictus from O. dentipes, to which it is other- 
wise very closely allied. The non-foveate front, the larger femoral tooth, &c., separate 
it from O. pubescens; and the anteriorly globose prothorax from 0. latidens. 
42, Otidocephalus pubescens. 
2. Otidocephalus pubescens, Rosensk. in Schonh. Gen. Cure. vii. 2, p.198*; Chevr. Ann. Soc. Ent. 
Fr. 1877, p. 178°. 
9. Otidocephalus albopilosus, Rosensk. loc. cit. p. 199*; Chevr. loc. cit. p. 178°. | 
Hab. Mexico!~4 (Mus. Holm.; Mus. Brit.), Playa Vicente, Toxpam, Orizaba, Vera 
Cruz (Sallé), Jalapa (Hoge), Sierra de Zongolica (coll. Becker), Tomotla (Flohr, in 
Mus. Berol.). 
We have numerous specimens of this species, varying greatly in size, all from the 
State of Vera Cruz. It differs from O. mexicanus and others in having a larger femoral 
tooth, the prothorax narrowed and constricted behind, and the elytra with long white 
hairs intermixed with the blackish sete, at least towards the apex. The front is foveate. 
In some of the smaller examples the seriate punctuation of the elytra is finer, and 
becomes almost obsolete laterally. The males have a rather short rostrum, and the 
fifth ventral segment unemarginate at the tip. The females are often very much larger 
and broader, and have the rostrum almost or quite as long as the prothorax. The types 
of O. pubescens and O. albopilosus have been communicated by Dr. Sjéstedt, and they 
certainly belong to one species, the two sexes being represented in our series from both 
Jalapa and Toxpam. In the single specimen from Zongolica, a male, the eyes are 
larger and more prominent than usual, and in one female from Toxpam the dark sete 
on the disc of the elytra are in great part replaced by long white hairs. 
43. Otidocephalus castaneus, sp. n. 
Elongate, shining, castaneous, the antenne ferruginous; the upper surface and legs clothed with a somewhat 
abundant, very long, erect, fine blackish setosity and intermixed long white hairs, the vestiture of the 
