40 PROCEEDINGS OF THE ACADEMY OP 



lateribus spina acuta armatis, elytris antice sat dense grosse punctatis, apice 

 rotundatis ; antennis annularis, corpore paulo longioribus. Long. "35. 



Northern New York, on bass-wood; Mr. Ashton. This species differs in 

 appearance from the others of the genus, and resembles in form a small Gra- 

 phisurus ; but the anterior coxal cavities are very distinctly angulated ex- 

 ternally. 



5. Monohammus oculatus, niger, pube brevi pallida parce irroratus, thorace 

 confertim rugoso et puuctato, latitudine paulo breviore, spina laterali acuta, 

 elytris rude punctatis, macula rotundata atra utrinque pone medium ornatis. 

 Long. -42. 



Racine, Wisconsin ; Dr. J. P. Kirtland. A very distinct and beautiful little 

 species. The antennse are nearly twice as long as the body. 



6. Monohammus rcarmoratus, Lamia marmorata Randall ; Monohammus 

 fautor Lee. 



This synonym is determined by reference to the original specimen. 



7. Tetrops jucunda, elongata, nigra, nitida, pube erecta nigra longa 

 vestita, capite thoraceque coccineis, hoc latitudine longiore parce punctulato, 

 antice posticeque vage transversim impresso, macula dorsali ovali nigra ornato, 

 elytris grosse subseriatim punctatis ; pedibus totis nigris. Long. -33, 



Middle States. Larger than T. monostigma, and easily known by the 

 black legs. 



8. Leptura rufibasis, elongata, nigra, subtiliter cinereo-pubescens 

 capite thoraceque confertissime punctatis, hoc latitudine longiore, antrorsum 

 seusim angustato, lateribus modice rotundatis, cinereo-pruinosis, angulis pos- 

 ticis parvis acutis, elytris fere parallelis apice rotundatis, antice fortiter, pos- 

 tice subtilius punctatis, antennis fuscis articulo lmo rufo, pedibus rufis, tarsis 

 nigris ; tibiis posticis femorumque apice nonnunquam nigris. Long. "25 -30. 



Hudson's Bay Territory, about Methy Lake ; Mr. R. Kennicott. Of the same 

 size and form as L. s n ba rge n tata Kirby, but differs by the red color of the 

 legs and base of antenna?. In one specimen the hind tibiae and the outer fourth 

 of tbe hind thighs are black; in all the others seen the thighs and tibiae are 

 entirely red, and the tarsi alone dark. 



9. Leptura saucia, elongata nigra, capite thorac&que dense punctulatis 

 fulvo pubescentibus, hoc fulvo, macula magna dorsali nigricante. latitudine 

 paulo breviore, convexo, antrorsum angustato, angulis posticis parvis acutis, 

 elytris parallelis fortiter postice subtilius punctatis, breviter griseo-pubes- 

 centibus, apice rotundatis; antennis pedibusque nigris, femoribus anticis, 

 mediorumque basi rufo-testaceis. Long. -25. 



Middle States. Allied to L. r u f i c o 1 1 i s Say, but, besides the differences in 

 color, the thorax is more finely and densely punctulate than in that species. 



10. Leptura ruficeps, elongata nigra, parce griseo-pubescens, capite 

 obscure sanguineo, thoraceque dense punctulatis, hoc latitudine paulo longiore, 

 antrorsum angustato, lateribus late rotundatis, angulis posticis parvis acutis, 

 elytris parallelis, fortiter, postice subtilius punctatis, apice rotundatis; antennis 

 nigris, pedibus anticis rufis, posterioribus nigris, femoribus inediis basi rufis. 

 Long. -27. 



One specimen, upper Georgia. This species belongs to the same division as 

 the two preceding. The front tibise and tarsi are slightly fuscous. 



11. Centrodera sublineata, fusca, sordide pubescens, thorace confertim 

 punctato, linea angusta dorsali laevi, antice posticeque constricto, apice 

 angustiore, lateribus medio obtuse angulatis, elytris thorace sesqui latioribus, 

 parallelis apice rotundatis, sat dense punctatis, sulcis obsoletis magis pubes- 

 centibus notatis ; antennis corpore longioribus, articulis 3 et 4 conjunctis 5to 

 baud longioribus. Long -45 -53. 



[Feb. 



