162 [August, 



* * Antennarum articulo 8vo triangulari, paulo dilatato. ' 



5. T. f 1 a v i c o 1 1 i s Lac. Mon. Erotyl. 218. Lee. Journ. Acad. Nat. Sc. 2d 

 ser. 1, 71. A common species found from Louisiana to Lake Superior. It is 

 certain! v bv error that Dr. Melsheimer (Cat. of Described Col. &c. p. 46) con- 

 siders it as Tetratoma dimidiata Fabr. (Syst. El. 2, 574) since we have a native 

 species of Tetratoma which corresponds with the description. 



6. T. con finis, nigra, elliptica, antennis (clava excepta) pedibus capite 

 thoraceque runs, hoc latitudine plus duplo breviore, lateribus magis rotundatis, 

 sat punctato, elytris punctato-striatis, interstitiis parce punctulatis. Long. -16. 



New York, two specimens. This species resembles closely the preceding, 

 and only differs by the body being somewhat broader and less convex, and by 

 the sides of the thorax being considerably rounded, instead of obliquely and 

 slightly rounded. A more detailed description is therefore unnecessary. 



B. Corpus ovatum ; palpi maxillares articulo ultimo latitudine duplo breviore. 

 a. Tibiae anticae non dilatatse ; antennarum articulo 3io sequentibus duobus 

 longiore. 



7. T. sangfuinipennis Say, Journ. Acad. Nat. Sc. 4, 89. Lee. ibid. 2d 

 ser. 1, 71. Middle and Southern States. 



8. T. pulchra. Tritoma pulchrum Say, Journ. Acad. Nat. Sc. 5, 301. Tri- 

 toma cincta Lac. Erotyl. 223. Middle States, rare; for my unique specimen I 

 am indebted to Mr. Ziegler. 



9. T. dimidiata. Tritoma dimidiata Lacord. Erotyl. 224. Trit. basale\\ 

 Mels. Proc. Acad. 3, 175. Triplax pulchra\ Lee. Journ. Acad. Nat. Sc. 2d ser. 

 1, 71. Middle and Southern States. 



10. T. vittata Lee. Journ. Acad. 2d ser. 1,71. One specimen, "Western 

 New York. 



b. Tibiae anticae plus minusve dilatatae ; (antennae ut supra.) 

 et. Thorax elytraque nigra, his macula basali ornata. 



11. T. rufic eps Lee. Journ. Acad. Nat. Sc. 2d ser. 1, 71. South Carolina, 

 Mr. Zimmermann. 



12. T. humeral is. Tritoma humeral e Fabr. Syst. El. 2, 571. Triplax 

 tceniata Lee. Journ. Acad. Nat. Sc. 2d ser. 1, 71. Middle and Southern States ; 

 abundant. 



13. T. b i g u 1 1 a t a Say, Journ. Acad. Nat. Sc. 4, 89. Tritoma basalis La- 

 cordaire, Erotyl. 225. Middle and Southern States ; abundant. 



/3 Thorax rufus, elytra nigra. 



14. T. a f fin is Lee. Journ. Acad. Nat. Sc. 2d ser. 1, 71. Tritoma affinis 

 Lacord. Erotyl. 224. Georgia and Texas. 



15. T.atriventris Lee. Journ. Acad. Nat. Sc. 2d ser. 1, 72. South Caro- 

 lina to Texas ; abundant. 



y. Thorax et elytra concoloria, nigra vel picea. 



15. T. erythrocephala Lee. Journ. Acad. Nat. Sc. 2d ser. 1, 71. Tri- 

 toma erythrocephala Lac. Erotyl. 226. Southern States. 



16. T. an gul at a Lee. Journ. Acad. Nat. Sc. 2d ser. 1, 71. Tritoma angu- 

 lation Say, ibid. 5, 300. Tritoma flavipes Lacord. Erotyl. 226. Middle and 

 Southern States. 



17. T. b r u n n e a Lee. Journ. Acad. Nat. Sc. 2d ser. 1. 71. Tritoma brun- 

 nea Lacord. Erotyl. 222. New York. 



18. T. u n ic o lo r Lee Journ. Acad. Nat. Sc. 2d ser. 1,71. Tritoma unicolor 

 Say, ibid. 4, 300. Lacord. Erotyl. 220. Middle and Southern States ; abundant. 



