MEGALOSTYLODES.—EXOPHTHALMINA. 247 
1. Megalostylodes hirsutus, sp. n. (Tab. X. figg. 35, 354, ¢.) 
Oblong, black; above sparsely clothed with cinereous or bluish-white scales, and also thickly set with long, 
erect, stiff, bristly hairs; beneath densely clothed with whitish scales and also thickly pilose; the legs 
squamose and hirsute. Head longitudinally rugulose and narrowly sulcate between the eyes; antennal 
scape clavate, slender at the base, in g extending beyond the eyes, in 2 shorter and more slender, 
joints 3-7 of the funiculus decreasing in length, 1 and 2 subequal. Prothorax transverse, somewhat 
rounded at the sides, feebly bisinuate at the base, the hind angles acute in 2 and more obtuse in ¢ ; 
closely, finely granulate. Scutellum triangular, depressed. Elytra moderately long, broad and 
subparallel in their basal half in 92, gradually narrowing from the base in ¢ ; punctate-striate, the 
interstices somewhat convex, rugulosely punctate, and subgranulate. First ventral segment slightly 
hollowed down the middle in g. Legs stout, more slender in @ ; all the tibim in ¢, and the 
anterior pair in 2, unguiculate. . 
Length 43-91, breadth 2-4 millim. (¢ 2.) 
10 
Hab. Muxico (Koltze, in Mus. Dresden), Tehuantepec (Sallé; Hnab, in U.S. Nat. 
Mus.), Oaxaca (LZége). 
Numerous examples, varying greatly in size. 
Group EXOPHTHALMINA. 
Exophthalmini (Evotini), Horn. 
The genera referred to this group have the scrobes lateral, long, and descending 
(only in part visible from above); the eyes not strictly lateral; the vibrissee wanting ; 
the scutellum distinct ; the elytra with or without supplementary striz, the outer striae 
free (except in Mazenes); the metathoracic episterna widened in front ; the anterior 
tibia unguiculate ; the posterior tibiz laminate at the apex (corbels closed) and with 
the articular surface more or less cavernous; the tarsal claws free; and the body winged 
(rudimentary or wanting in Naupactopsis, Mazenes, and one or two species of Chaulio- 
pleurus). ‘The Exophthalmina include a large number of conspicuous South American 
and Antillean forms, and the three genera referred to it by Horn—Lachnopus, Omileus, 
and Evotus. Exophthalmus is represented by many species within our limits, but 
some of the other Tropical American genera are wanting, e. g. Prepodes, Lachnopus, 
Ischionoplus, &c. Mazenes and Naupactopsis have a visible scutellam and the sternal 
side-pieces shaped as in the winged forms, and they are therefore included in th s group. 
a. Wings fully developed *. 
a’. Elytra with abbreviated supplementary striz on the outer part of the disc. 
a’. Rostrum dilated anteriorly, tricarinate, and with a transverse inter- 
antennal ridge, the scrobes Jong and deep; elytra very little wider 
than prothorax in g,, the apex hairy; tibiz more or less distinctly 
sulcate externally: body elongate, fusiform, robust . . . . . . Ruatnosparae. 
6’. Rostrum without definite inter-antennal ridge; elytra much wider than 
the prothorax in both sexes, the apex not hairy; tibize (except in 
Exophthalmus sulcicrus) not sulcate externally. 
* Except in certain species of Chaulivpleurus. 
