234 RHYNCHOPHORA. 
2. Otidocephalus grandis. (Tab. XIII. figg. 2, 2a.) 
Otidocephalus grandis, Chevr. Ann. Soc. Ent. Fr. 1877, p. 174, t. 4. fig. 7°. 
Hab. Mexico (Mus. Brit.), Tecalco! in Puebla, San Andres Tuxtla in Vera Cruz 
(Sallé), Atoyac in Vera Cruz (Flohr, in Mus. Berol.). 
This is one of the largest species of the genus, and distinguishable by the very deep 
lateral sulci of the rostrum, the subcylindrical, almost smooth prothorax, and the 
faintly or obsoletely seriate-punctate elytra, set with scattered, coarse, semierect, white, 
squamiform hairs, which become more numerous towards the apex. The legs are stout 
and comparatively short, the femora each with a moderately large triangular tooth, the 
tibie strongly sinuate within. ‘Two specimens are contained in the Sallé collection, 
the largest of which measures 12 millim. in length and 43 millim. in breadth (Chevrolat 
gives 14 and 6 respectively). 
8. Otidocephalus pilicollis, sp.n. (Tab. XIII. figg. 3, 3a.) 
Elongate, black, shining; the head, the base and apex of the elytra, the under surface and legs clothed with 
white pubescence only; the disc of the prothorax densely clothed with short blackish hairs, these 
becoming white at the sides and base, and more scattered towards the apex. Head almost smooth, the 
eyes very large, prominent, and rather narrowly separated; rostrum stout, shorter than the prothorax, 
punctato-sulcate at the sides and smooth along the middle; antenne with joint 2 of the funiculus nearly 
as long as 1, 3-7 short, the club ovate. Prothorax long, a little narrowed in front and behind, depressed 
and closely, rugulosely punctate on the disc towards the base, the punctuation becoming more scattered 
on the anterior half, the flanks quite smooth and glabrous. Scutellum small, smooth. Elytra moderately 
elongate, convex, somewhat flattened on the disc anteriorly, much wider than the prothorax, widening: 
to the middle, the humeri obliquely truncated in front; finely seriate-punctate, the punctures becoming 
deeply impressed on the disc towards the base, the interstices flat and almost smooth, except towards 
the base, where they are rugulose and convex, 1 (sutural) and 3 appearing sharply raised anteriorly.. 
Fifth ventral segment slightly depressed along the.middle in the ¢. Legs stout; femora each with a 
moderately large, acute, triangular tooth; anterior tibie strongly sinuate within. 
Length 64, breadth 23 millim. (¢ 9.) 
Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion). 
Two specimens. A species easily identified by the short, dense, blackish pubescence 
on the disc of the prothorax towards the base, the flanks of the latter being smooth 
and glabrous, and the deeply impressed series of punctures at the base of the elytra, 
the elytra themselves being pubescent at the base and apex only, and without sete. 
4, Otidocephalus depressicollis, sp. n. 
Elongate, black, shining; the head, the prothorax, and the base and apex of the elytra very sparsely clothed 
with fine, white, decumbent pubescence, the legs and under surface more thickly pubescent. Head 
sparsely punctate, feebly foveate between the eyes, which are moderately large and somewhat widely 
separated ; rostrum stout, nearly as long as the prothorax, punctato-sulcate at the sides, smooth along 
the middle; antenne as in O. pilicollis, Prothorax long, narrowed behind, depressed and densely, 
rugulosely punctate on the disc towards the base, the punctuation becoming scattered towards the apex, 
the flanks smooth and glabrous. Scutellum small, smooth. Elytra as in O. pilicollis, but with the 
