OTIDOCEPHALUS. 259 
convex, uniseriate-punctate. Fifth ventral segment arcuate-emarginate at the apex in the g¢. Femora 
each with a small triangular tooth. Anterior tibie strongly sinuate within. 
Length 51-6,1,, breadth 2-24 millim. 
Hab. Mexico, Juquila in Oaxaca (Sallé; Mus. Dresden). 
Two males and two females, one of which belongs to the Dresden Museum. A 
moderately elongate form, the elytra punctate-striate, with scattered coarse white 
hairs intermixed with the black sete, the antennal club long, the femoral tooth small 
and triangular, the fifth ventral segment emarginate in the male. It is not unlike 
O. brevisetis, but the elytra have less prominent humeri, uniseriate-punctate interstices, 
longer setosity, and narrower squamiform hairs, the legs are not so stout, &c. The 
intermixed coarse white hairs on the elytra separate it from the still more nearly allied 
O. mexicanus. 
56. Otidocephalus senex. 
Otidocephalus senex, Chevr. Ann. Soc. Ent. Fr. 1877, p. 176°. 
Hab. Muxico, Cordova!, Toxpam (Sallé), Sierra de Zongolica (coll. Becker). 
The type of this insect cannot now be found at Stockholm, but we have three 
specimens of it from Sallé, and there is another in Mr. R. Becker’s collection in Berlin. 
Amongst the small species with short, convex elytra, it may be recognized by the 
sparse black setosity intermixed with a few rather coarse, rigid, white hairs, the very 
fine or almost obsolete seriate punctuation, and the rather small, triangular, femoral 
tooth. The head is coarsely punctured above, smooth near the eyes, and foveate 
between them. ‘The prothorax is subglobose in front, quite smooth at the sides, with 
a few scattered punctures only on the disc. The humeri of the elytra are obliquely 
truncated in front and somewhat swollen. 
57. Otidocephalus zneus, sp. n. 
Elongate, very shining, nigro-zeneous; the head, the basal margin of the prothorax, the scutellum, the under 
surface, and legs clothed with white hairs, the prothorax and elytra with a few, fine, scattered, suberect, 
blackish sete, those on the elytra arranged in an interrupted row along the interstices 1, 3, and 5. 
Head foveate and rugosely punctured between the eyes, for the rest sparsely punctate; eyes large and 
moderately prominent, somewhat widely separated; rostrum short and stout, very much shorter than 
the prothorax, depressed at the base above, rugosely punctate and shallowly sulcate laterally, smooth 
along the middle to near the tip; antenne with joints 2-7 of the funiculus short, 1 about twice as long 
as 2, the club ovate. Prothorax moderately long, cylindrical, narrowed at the base, the disc with a few 
widely scattered punctures, the basal margin closely punctate, the flanks smooth. Elytra moderately 
long, convex, much wider than the prothorax, widening to the middle, subtruncate at the base; very 
finely seriate-punctate, the interstices flat, 1, 3, and 5 each with a row of scattered punctures. Femora 
— each with a small, narrow tooth. Anterior tibiee feebly sinuate within. Tarsal claws feebly appendiculate. 
Length 6, breadth 23 millim. (¢ ?) 
Hab. GuateMaALA, Totonicapam, between 8500 and 10,500 feet (Champion). 
One specimen. This insect is of about the same size and build as 0. mexicanus, but 
2LL 2 
