254 RHYNCHOPHORA. 
finely seriate-punctate, the interstices minutely uniseriate-punctate. Legs long, rather slender; femora 
each with a large, acute, triangular tooth; anterior tibie sinuate within. 
Length 33-44, breadth 13-14 millim. (¢ @.) 
Hab. Mxxico (ea coll. Flohr); Guatemaua, Chacoj, Teleman, Panzos, and Panima in 
Vera Paz (Champion); Panama, Bugaba (Champion). 
Found in numbers in the valley of the Polochic. This insect is less elongate than 
O. panamensis, the elytral setee—which are usually blackish on the disc and white at 
the sides and apex—are a little finer and extend along the whole length of each 
interstice, and the femoral tooth is larger. The absence of the deep frontal fovea, the 
more globose anterior portion of the prothorax, the much smaller average size, &c., 
separate it from O. pubescens; the larger femoral tooth, and the punctured head 
without deep frontal fovea, from 0. similis; and the less inflated elytra and their 
finer setosity from O. canus. The tarsi are ferruginous in some of the Guatemalan 
specimens. : 
46, Otidocephalus cylindricollis, sp. n. (Tab. XIII. figg. 21, 21a, 6, 2; 
22, 3.) 
Elongate, subconical, shining, black, the funiculus reddish; the head and prothorax with scattered blackish 
and white semierect hairs, the elytra with a row of blackish erect sete: along each interstice, the vestiture 
of the scutellum and under surface white, the legs with intermixed white and blackish hairs. Head 
sparsely, rather coarsely punctate, faintly sulcate between the eyes in the Q; rostrum () very stout, 
curved, much shorter than the prothorax, punctato-sulcate at the sides, smooth along the middle, 
(2) straighter and more slender, as long as or longer than the prothorax ; antenne (d ) rather short, 
with joint 2 of the funiculus much shorter than 1, and the club ovate, (2) more elongate, with joint 2 
of the funiculus nearly or quite as long as 1, and the club oblong-ovate. Prothorax long, cylindrical, 
slightly narrowed at the base, somewhat coarsely punctate, transversely rugose on the disc, a space on. 
the flanks impunctate. Elytra elongate, convex, flattened on the disc at the base, very much wider 
than the prothorax, widening to beyond the middle, the humeri obliquely truncate in front, finely seriate- 
punctate, the interstices each with a row of scattered fine punctures. Femora each with a rather small 
triangular tooth. Anterior tibie in the ¢ strongly sinuate within. 
3. Apical margin of the fifth ventral segment feebly sinuate. 
Q. Apical margin of the fifth ventral segment produced in the middle into a rather long, narrow, bifurcate pro- 
cess, deeply arcuato-emarginate on either side of this, and also flavo-ciliate; pygidium deeply emarginate, 
Length 9-103, breadth 384-4 millim. (¢ 9.) 
Hab. Mexico (Mus. Brit.: 2°), Cordova [ é @ |, and Actopam [ ¢ ] (Hége). 
Five specimens. A large, elongate form allied to O. apioniformis, with a cylindrical, 
transversely rugose prothorax; the female with a peculiarly modified fifth ventral 
segment and an unusually long rostrum. 
47. Otidocephalus apioniformis. (Tab. XIII. figg. 23, 23 a, ¢.) 
Otidocephalus mexicanus, Gyll. in Schénh. Gen. Cure. iii. p. 364 (nec Chevr.) *. 
Otidocephalus apioniformis, Rosensk. in Schénh. Gen. Cure. vii. 2, p. 195? ; Chevr. Ann. Soc. Ent. 
Fr. 1877, p. 178°. | 
Very elongate, somewhat conical, shining, black, the antennz sometimes partly reddish ; very sparsely clothed 
with erect blackish sete, which on the elytra are arranged in a single row along each interstice, the base 
