138 GEO. H. HORN, M. D. 



a little longer than the body, slender, eleven-jointed, above and beneath hairy, 

 first joint moderately stout, cylindrical, suddenly constricted at base, a small 

 dentiform process in front at tip, second joint very short, joint three moderately 

 long, one-third longer than the first, 4 — 11 gradually shorter and more slender. 

 Labrum distinct, short, transverse. Mandibles short, obtuse at tip. Palpi un- 

 equal, maxillary longer, last joint of both oval and pointed. Thorax cylindrical, 

 slightly stouter at middle. Anterior coxse prominent, conical, contiguous, the 

 cavities open behind, middle coxse conical, contiguous, posterior coxae slightly 

 separated. Anterior tibiae obliquely sulcate, middle and posterior simple. Tarsi 

 slightly dilated, clothed with silken pubescence beneath, first joint as long as 

 the next two together. Claws divaricate. Ventral segments cylindrical, gradu- 

 ally decreasing in length. Elytra nearly as long as the abdomen. 



The above generic name is proposed for a species of gigantic size 

 for the tribe allied to Styloxus Lee, with which it agrees in most of 

 its characters, but differs in the longer and more vertical front more 

 deeply impressed on the vertex, terminating above in obtusely conical 

 tuberosities from which the antennae arise. The eyes are also smaller 

 being very evidently separated on the vertex and rather widely 

 separated on the under side. The parts of the mouth are also better 

 developed than in the other genera of the tribe although by no 

 means large. 



I. Fulleri n. sp. — Brownish testaceous, elongate, subcylindrical, sparsely 

 clothed with pale brownish pubescence. Thorax cylindrical, slightly dilated 

 at middle, one-fourth longer than wide, a slight oblique impression on each 

 side near the base, vague traces of three smooth discal lines, surface coarsely 

 punctured. Elytra wider than the thorax, coarsely punctured, gradually nar- 

 rowed to apex, apices separately rounded. Body beneath and legs piceous, 

 femora paler at base. Length .66 inch ; 16.5 mm. (PI. II, fig. 10). 



One specimen from Texas, kindly given me by Mr. A. S. Fuller, 

 to whom I take great pleasure in dedicating it. 



EXPLANATION OF PLATE II. 



1. — Coenopceus Palmeri Lee. 



2. — Lepturges symmetricus Hald., var. pictus Lee. 

 3. — " signatus Lee. 

 4. — " querci Fitch. 

 5. — " facetus Say. 

 6. — " regularis Lee. 

 7. — CEme strangulata Horn. 



8. — Cyllene decorus Oliv., var. a, infaustus Lee; c, charus Say; e, prothorax be- 

 neath of crinicornis ; f, robinice ; g, pictus and decorus. 

 9. — Sicyobius Brousii Horn. 

 10. — Idoemea Fulleri Horn. 



Erratum.— On page 133, for O. striangulata read O. strangulata. 



