1855.] 275 



minis segmento quinto ventrali truncato, sexto conspicuo subemarginato : anten- 

 nis longissime ramosis. Femina latet. 



Newman, Ent. Mag. 5, 375. 



Lake Superior : found by Mr. Doubleday in Western New York. 



Dendroides Latr. 



1. D. canadensis, rufo-testaceus parcius pubescens, ely tris discrete pune- 

 tatis nigris, capite inter oculos fusco, thorace ovali latitudine fere longiore antror- 

 sum attenuato, postice late foveato parce punctato, antennis piceis. Long. -35 

 55. 



Mas, oculis maximis fere continguis ; abdominis segmento quinto ventraii 

 truncato, sexto conspicuo ernarginato : antennis longissime ramosis. 



Femina, oeulis magnis at bene discretis interstitio fusco-piceo punctato ; 

 antennis modice pectinatis, ramis articulis haud longioribus. 



Latreille, Consid. gen. (1810.) 



Pogonocerus bicolor Newman, Ent. Mag. 5, 375. 



Middle, Southern and Western States, not rare. The generic name given by 

 Latreille, has two years piiority over Pogonocerus of Fischer. 



2. D. concolor, rufo-testaceus parcius pubescens, elytris discrete punctatis, 

 capite parce punctulato, thorace latitudine longiore, antrorsum attenuato, fovea 

 parva basali notato laevi, antennis fuscis basi testaceis. Long. '46. 



Sexus differentia sicut inL. canadensi. 

 Middle and Northern portions of the United States. 



3. D. testaceus, saturate testaceus, parce pubescens, capite fere piceo 

 punctato, parcius inter oculos, thorace latitudine haud longiore antrorsum attenuato 

 parce punctulato, basi breviter canaliculato, elytris densius punctatis et rugosis. 

 Long. "46. 



Femina, oculis mediocribus, bene discretis, antennis serratis, extrorsum brevi- 

 ter pectinatis, ramis praecipue articulis brevioribus. 



Mas latet. 



One specimen from Lake Superior. Differs from the preceding by the more 

 distant eyes, the broader thorax and the more densely punctured elytra ; the 

 joints of the antennae, from the 3d to the 6th are triangular, and the following 

 are gradually more and more produced at the extremity. In D. concolor, the 

 6th joint is provided with a branch nearly as long as the seventh joint. 



4. Pogonocerus ephemeroides Mann. Bull. Mosc. 1852, 348. Russian 

 America ; unknown to me. 



Nematopltis Lee. 



Caput longe pone oculos subito constrictum, collo brevi crasso : palpi maxillares 

 articulo ultimo ovali truncato, praecedente longiore ; labiales breves articulo 

 ultimo ovali truncato, ligula emarginata ; mandibular apice bicuspidatae. Anten- 

 nae fere filiformes, articulo 2ndo parvo, 3io 5to sequentibusque subaequalibus, 4to 

 contiguis paulo longiore. Thorax capiti aequalis transversus, lateribus subangu- 

 latim rotundatus; elytra thorace latiora parallela convexa, humeris prominulis, 

 apice rotundata. Pedes tenues, tarsi elongati filiformes, ungues basi dilatati, at 

 hand dentati, singulus appendice inferiore ungui ipsi fere aequali acuta apice incurva 

 instructi, paranychio parvo distincto. 



1. N. collaris, niger, capite opaco, punctulato canaliculato, thorace convexo 

 rufo parce punctulato, canaliculato pone medium late excavato, transverso lateri- 

 bus subangulato, elytris confertim rugose punctatis, lineis utrinque tribus obsoletis, 

 ore flavo, palpis maxillaribus pedibusque piceis, artubus pallidioribus. Long. 35. 



Mas segmento ventrali abdominis quinto late ernarginato, sexto laevi nitido 

 apice truncato. Femina latet. 



One specimen, Ann Harbor, Michigan. The form is like that of Eurygenius. 



