318 RHYNCHOPHORA. 
widened and perfoliate, and the club armed with a sharp tooth atthe base beneath (fig. 316); prothorax 
with a small polished tubercle at each anterior angle; prosternum with a spiniform pencil of hairs 
between the anterior coxee (sometimes wanting); first ventral segment with a smooth polished space in 
the middle, in the centre of which is a compressed ferruginous tubercle ; anterior tibie slightly hollowed 
towards the apex within, strongly unguiculate; anterior tarsi dilated, joints 1 and 2 each with a dense 
cluster of hairs on the inner edge. 
Hab. Mexico! (TLruqui, in Mus. Brit.; ex coll. Sturm ; U.S. Nat. Mus.), Acapulco, 
Zapotlan, Morelia, Guadalajara (Hoge), Puebla, Izucar, Parada (Sadlé), Omilteme, 
Amula (H. H. Smith). 
Not uncommon in Mexico, whence many specimens of each sex have been received. 
The sculpture of the upper surface is very variable in this insect, the punctuation of the 
prothorax and elytral interstices being sometimes denser and confluent, especially in the 
‘males. In the female the rostrum is smoother, the antenne are normally formed, and 
the tubercle at the anterior angles of the prothorax is wanting. In one fresh male 
from Omilteme the numerous hair-like scales on the first and fifth elytral interstices 
are whitish. The scutellum is densely albo-squamose. ‘he elytra are transversely 
flattened on the disc before and beyond the middle. The lower side of the femora and 
the inner edge of the tibiz are more or less hairy in both sexes. The length varies 
from 4-62 mm. 
2. Odontocorynus latiscapus, sp.n. (Tab. XVI. fig. 32, ¢, antenna, from 
above.) | : 
Oblong, black, the anterior tibiz at the apex, and the anterior tarsi in great part, rufo-testaceous ; sparsely 
clothed with short, fine, hair-like, brownish or cinereous scales, those on the elytra arranged in two lines 
down each interstice, the scutellum albo-squamose ; the vestiture of the under surface and legs rather 
coarse, close, and white. Head densely punctate; rostrum moderately stout, curved, a little longer than 
the head and prothorax, densely striate-punctate, the scrobes very deep and somewhat sinuous; antenne 
inserted at about the apical third of the rostrum, the scape sinuous, flattened and dilated in its outer 
half, joints 4-7 of the funiculus perfoliate, strongly dilated, the club armed with a small tooth at 
the base beneath. Prothorax densely, confluently punctate, except along the smooth, raised, median line, 
and with a small, smooth tubercle at each anterior angle. LElytra oblong-subtriangular, flattened on the 
disc before and beyond the middle; narrowly punctate-striate, the interstices roughly punctate. Beneath 
densely punctate ; first ventral segment shallowly sulcate down the middle, without trace of tubercle. 
Prosternum sulcate, the sulcus limited on each side bya straight ridge, and with a small spiniform pencil 
of hairs between the anterior coxe. Anterior tibiz and tarsi as in O. creperus. 
Length 32-43, breadth 13-2 millim. (<¢.) 
Hab. Mexsco, Cerro de Plumas (Hége), Omilteme and Xucumanatlan in Guerrero 
7000-8000 feet (H. H. Smith), Parada (Sallé). 
Ten specimens, all males. Though this form has been obtained in two of the same 
localities as O. creperus, it’ cannot be included ‘satisfactorily under that species, there 
being nothing intermediate amongst the numerous males examined. ‘The species 
of Loboderes differ in a similar way. The sinuous, broadly dilated scape of the 
antenne and the simply sulcate first ventral segment are characteristic. A female 
from Oaxaca (Sal/é), with the vestiture of the upper surface longer and coarser, may 
belong here. 
