246 RHYNCHOPHORA. 
interstice. Compared with that insect, it is more elongate, with the rostrum shorter, 
the head more rugose, the elytra relatively longer and more coarsely punctate-striate, 
and the femoral tooth not so broad. 
Five specimens. The North-American 0. myrmex (Herbst) also resembles 
O. hystricosus, but it has a very much larger femoral tooth. 
29. Otidocephalus divisus, sp. n. 
Moderately elongate, black, shining ; clothed with widely scattered, rather short, erect, blackish sete, which 
on the elytra are arranged in a single row on each of the alternate dorsal interstices, the sete being 
replaced on the apical declivity and at the sides by a series of curled white hairs, the base of the prothorax 
also with a few white hairs, the vestiture of the scutellum, legs, and under surface white. Head rather 
coarsely punctate, foveate between the eyes, which are moderately large and widely separated ; rostrum 
much shorter than the prothorax, punctato-sulcate at the sides, smooth along the middle; joints 2-7 of 
the funiculus subequal in length. Prothorax long, convex, narrowed in front and behind, with a few 
widely scattered punctures, the disc transversely rugose at the base, a space on the flanks impunctate. 
Elytra moderately long, somewhat gibbous, at the base only a little broader than the prothorax, rapidly 
widening to the middle, the humeri rounded ; very finely seriate-punctate, the alternate interstices 
1, 3, 5, 7, 9 minutely uniseriate-punctate. Femora each with a large, acute, triangular tooth. Anterior 
tibize sinuate within. 
Length 5, breadth 24 millim. 
Hab. Mexico, Tapachula in Chiapas (Hége). 
One specimen. In this insect the seriately arranged blackish sete on the alternate 
interstices of the elytra are abruptly replaced on the apical declivity, and also laterally, 
by curled white hairs, and the elytra themselves are somewhat inflated and compara- 
tively narrow at the base, characters separating O. divisus from the other allied forms 
with a large femoral tooth. 
30. Otidocephalus setiger, sp. n. 
Moderately elongate, shining, black, the tarsi piceous or rufo-piceous; the head and prothorax somewhat 
thickly clothed with long, erect, intermixed blackish and white hairs, the elytra with an abundant, very 
long, erect, blackish, serially arranged, setosity intermixed with shorter, scattered, rather coarse white 
hairs, which become more numerous on the apical declivity and are arranged in an irregular double row 
on some of the interstices, the vestiture of the scutellum and under surface white, the legs with intermixed 
white and blackish hairs. Head sparsely punctate, not or feebly foveate between the eyes, which are 
comparatively small and somewhat widely separated ; rostrum moderately stout, nearly as long as the 
prothorax, depressed at the base above, punctato-sulcate at the sides, smooth along the middle. Prothorax 
moderately long, convex anteriorly, much narrowed behind, coarsely punctate, with indications of a 
narrow smooth space down the middle. Elytra convex, moderately long, much wider than the prothorax, 
widening to the middle and rapidly narrowing thence to the apex, subtruncate at the base, the humeri 
obtuse and slightly swollen; rather coarsely punctate-striate, the interstices flat or feebly convex, each 
minutely uni- or biseriate-punctate. Femora each with a large triangular tooth. Anterior tibiz strongly 
sinuate within. 
Length 33-6, breadth 14-2 millim. 
fab. Muxico, Chilpancingo in Guerrero 4600 feet (Hl. H. Smith), Navarrete (Flohr, 
in Mus. Berol.). 
This species is distinguishable from 0. pubescens and other allied forms by the 
