B54 NITIDULIDA. 
Antenne with rather short, broad, very black club. Thorax short, shining, hirsute, 
sparingly punctate, the base not at all sinuate. Elytra with long, erect hairs, placed 
at a considerable distance from one another in very regular series, the interstices rather 
obscurely biseriately punctate and pubescent. Legs short. Prosternal process elongate. 
TEICHOSTETHUS, gen. nov. 
Metasternum anterius acute marginatum, in medio ultra marginem abrupte reflexum. Mesosternum carinatum. 
Prosternum processu sat elongato. 
Mandibles with slender extremity, their tips truncate, the truncation emarginate. 
Antenne with very elongate, compressed, loosely articulated, three-jointed club. 
Maxillary palpi short; labial palpi scarcely thicker than the maxillary. Prosternal 
process rather large, acutely margined, with rounded extremity. Mesosternum acutely 
carinate, the carina not rising to the level of the metasternum. Metasternum with a 
strongly raised margin extending completely across it in front; this margin forms a 
gentle curve in the middle, but it does not, however, here mark the junction with the 
mesosternum, this taking place at the level of the mesosternum, so that the piece in 
front of the metasternal margin is nevertheless a prolongation of the metasternum. 
Legs short and stout, the tarsi strongly dilated. 
This genus is confounded in collections with Hebascus, and I think also with 
Strongylus; from the former it is well distinguished by the curious margin of the meta- 
sternum, from the latter by the prolonged prosternal process. From Hebascus it may, 
too, be distinguished, without looking at the under surface, by the base of the thorax 
being distorted on each side in order to allow of its coadaptation with the humeral 
callus. The form of the metasternum suggests that it may be allied to Camptodes ; 
but this is not the case, as Teichostethus belongs to the series with the prosternal 
process bent upwards as in Strongylus; only that, as in the second section of Hebascus, 
the inflection of the apex is masked by the separate development and perfection of the 
horizontal part of the process. 
1. Teichostethus vinosus, sp. n. (Tab. XI. fig. 12.) 
Rotundato-ovalis, convexus, rufus, antennarum clava nigra, prothorace elytrisque ex parte majore nigris, 
marginibus rufis; pube brevi, erecta hispidus. 
Long. 4 millim. 
Hab. Mexico, Cordova (Sallé), Jalapa (Hoge). 
Antenne with the club quite as long as the other joints together. ‘Thorax coarsely 
punctate, the punctures not round but transverse; the base deeply sinuate on each side. 
Scutellum coarsely punctate. Elytra with a scanty suberect pubescence, among which 
are some sete serially arranged—these sete, not being very different from the other 
pubescence, are not very conspicuous,—and with series of large and closely placed, 
