170 RHYNCHOPHORA. 
1. Cautoderus mexicanus, sp. n. (Tab. VII. fig. 6, ¢.) 
Gracilis, griseo-viridi-squamosus, setis erectis brevissimis vestitus ; antennis testaceis, apicem versus apicibusque 
articulorum fuscis. 
Long. 4 millim. 
Hab. Mexico (coll. Solari: 2), Cuernavaca in Morelos (Hoge: ¢). 
This species is very similar to the variety of Derosomus fragilis that has the scales 
tinged with green, but in C. mexicanus the elytra bear numerous very short erect sete. 
The antenne are moderately long and the second joint of the funiculus is much 
shorter than the first. The eyes are large and convex. The thorax is slender, sub- 
cylindric, about as long as broad, a little narrowed towards the front. The elytra are 
broader at the base than the thorax, and become a little wider till just behind the 
middle; they are rather finely punctate-striate. ‘The legs are black, and the middle 
tibie of the male bear an emargination on the inner face just above the apex. Three 
specimens, 
CHATOPANTUS, gen. nov. 
Antenne scapo elongato, prothoracis marginem anteriorem fere attingente; coxe posteriores modice distantes ; 
abdomen segmentis ventralibus primo et secundo subzequalibus, tertio multo breviore. 
I am obliged to separate the species referred to this genus from Derosomus on 
account of the more approximate hind coxe ; it has, too, the pleural edge of the wing- 
case but little sinuate. In other characters, except that the scape is not quite so long, 
Chetopantus seems to agree with Derosomus. The mentum appears to be remarkably 
slender, and the labial palpi exposed at its apex excessively minute. 
1. Chetopantus illustris, sp. n. (Tab. VII. fig. 7.) 
Niger, viridi-squamosus, setis tenuibus erectis vestitus ; antennis fusco-rufis, basi rufo. 
1 i 
Long. 43 millim. 
Hab. Mexico, Tacambaro in Michoacan (/ége). 
Antenne with the second joint of the funiculus only half as long as the first, this 
latter not nodose at the tip, but becoming gradually broader there, the other joints of 
the funiculus elongate and setigerous. Rostrum short, feebly rugose, bearing brilliant 
green scales, the nasal plate broad and short, its margin elevated. ‘Thorax slender, a 
little rounded at the sides and narrowed in front, coarsely rugose, bearing brilliant 
green scales and fine, erect sete. Scutellum small, but distinct, narrow. Elytra 
slender, oval, scarcely broader at the base than the thorax, with large, closely-placed 
punctures in the broad strie, bearing small brilliant green scales and numerous fine, 
elongate sete. Legssetose. Under surface squamose, like the upper. Two examples. 
The remains of a specimen from Sturm’s collection, labelled by him “ Polydrosus 
malachiticus, mihi,” belong, I think, to this species. 
