OTIDOCEPHALUS. 257 
51. Otidocephalus oculatus. (Tab. XIII. figg. 24, 24a, ¢.) 
Otidocephalus oculatus, Rosensk. in Schénh. Gen. Cure. vii. 2, p. 195 - 
Hab. Mexico (Mus. Brit.), between Oaxaca and Acapulco! (Mus. Holm.), Capulalpam 
(Sallé), Zempoaltepec (Flohr, in Mus. Berol.). 
We have two males and two females of this species, agreeing with the type (¢ ) 
belonging to the Stockholm Museum, and there are two others in the Flohr collection 
in the Berlin Museum. It is very like 0. apioniformis, but the rostrum is much 
shorter, the eyes are less depressed, and the elytra are relatively broader and more 
truncate at the base, with the humeri prominent and the disc broadly flattened ante- 
riorly. The femoral tooth is small and triangular. The male has the fifth ventral 
segment broadly depressed along the middle behind, and also feebly emarginate at 
the apex. 
52. Otidocephalus mexicanus. 
Otiocephalus mexicanus, Chevr. Ann. Soc. Ent. Fr. 1832, p. 102, t. 3. figg. la, b°. 
Otidocephalus mexicanus, Chevr. loc. cit. p. 442°; Ann. Soc. Ent. Fr. 1877, p. 178°; Rosensk. in 
Schénh. Gen. Cure. vii. 2, p. 197%. 
Hab. Mexico?? (Mus. Holm.; Mus. Brit.), Sierra de Durango? (ex coll. Flohr), 
Acapulco, Jalapa (Hodge), Orizaba (Lesuewr4, Sallé), Playa Vicente, Toxpam, Vera 
Cruz (Sallé); GuatTeMALa, near the city (Salvin) ; Nicaragua, Chontales (Belt, Janson). 
Of this species we have a long series from Mexico, and also four specimens from 
further south. The chief characters of 0. mexicanus are the long, subcylindrical 
prothorax, the distinctly seriate-punctate elytra, with obliquely truncated humeri, the 
somewhat abundant blackish setosity, the rather short rostrum, the small, triangular, 
femoral tooth, and the somewhat curved, stout, anterior tibie. The fifth ventral 
segment is slightly emarginate at the apex in the male, and feebly bisinuate in the 
female. Three females, from Playa Vicente, Jalapa, and Chontales respectively, have 
the prothorax more rounded at the sides, and they may not really belong here. The 
less elongate shape and shorter rostrum separate O. mexicanus from O. apioniformis, 
O. vicinus, and O. tenuirostris, and the obliquely truncated elytral humeri distinguishes 
it from O. oculatus. I have seen one of the specimens described by Rosenskoeld. 
53. Otidocephalus angusticollis, sp. n. 
Elongate, black, shining; clothed with scattered, rather short, erect, blackish setze, which on the elytra are 
arranged in a single series down each interstice, the prothorax with a few long, fine, white, decumbent 
hairs at the base, the vestiture of the scutellum and under surface white, the legs with intermixed white 
and blackish hairs. Head sparsely punctate, shallowly foveate between the eyes, which are moderately 
large and somewhat widely separated ; rostrum much shorter than the prothorax, punctato-sulcate at the 
sides, smooth along the middle; antenne with joint 2 of the funiculus slightly longer than 3, 3-7 sub- 
equal in length, the club ovate. Prothorax elongate, convex, much narrowed behind, the surface with 
BIOL, CENTR.-AMER., Coleopt., Vol. LV. Pt. 4, August 1908. 2 LL 
