342 [December, 



Missouri Territory. The thorax exactly resembles that of T. lineola, but 

 the color of the mouth and feet at once distinguishes this species; the elytra are 

 less coarsely scabrous than in T. lineola. 



21. T. lineola. Cantharis lineola Fabr. Syst. El. 1, 301 ; Cantharis 

 parallela Say. J. Ac. Nat. Sc. 5, 168. Common in the Northern and Southern 

 States. 



22. T. rectus Mels. Pr. Ac. Nat. Sc. 2, 305. 



Middle and Southern States. Varies, with the suture and tibia at base tes- 

 taceous ; also with the femora fuscous, tibiae and tarsi pale. I suspect that 

 Cantharis rufipes Say. J. Ac. Nat. Sc. :}, 182, is this variety, but his descrip- 

 tion is excessively bad. 



23. T. S a y i , niger, thorace subtransverso, antrorsum subangustato, an- 

 gulis omnibus rotundatis, lateribus tenuiter marginatis, disco fcqualiter convexo, 

 nigro-vittato, elytris scabro-punctatis. Long. 27. 



One specimen, New York. Differs from T. lineola by the much narrower 

 reflexed thoracic margin, which is almost obsolete at the middle. The next 

 species has a thorax not at all transverse, the black part is much broader, the 

 reflexed margin less narrow, and the disc is laterally excavated before the 

 middle. 



24. T. angulatus. Cantharis atigjilatus (!) Say. J. Ac. Nat. Sc. 3, 180. 

 Pennsylvania, Bristol. 



25. T. cruralis, niger, ore thoraceque flavis, thorace transverso antror- 

 sum subangustato, angulis omnibus subrotundatis, lateribus rectis tenuiter mar- 

 ginatis, disco aequaliter convexo, nigro-lineato, elytris subtilius scabris, testaceo- 

 marginatis pedibus flavis tibiis tarsisque fuscis. Long. -26. 



One specimen, Georgia. Very much resembles in form and size T. lineola, 

 &c., but very distinct ; the lateral margin of the thorax becomes more indistinct 

 towards the anterior angle. 



26. T. marginellus, niger ore thoracisque margine flavis, thorace sub- 

 transverso, antrorsum subangustato, angulis omnibus subrotundatis, lateribus 

 leviter rotundatis marginatis, disco aequaliter convexo nigricante, elytris scabris, 

 sutura margineque tenuiter pallidis, antennarum basi genubusque testaceis. 

 Long. '23. 



Georgia, one specimen. The margin of the thorax is more distinct and equally 

 reflexed anteriorly ; most nearly resembles T. rectus (Mels.,) but the sides of 

 the thorax are not straight, the sides of the disc are not excavated anteriorly, 

 and the margin is wider. 



27. T. excavatus, niger, thorace flavo quadrato, antrorsum angustato, 

 lateribus rectis tenuiter valde marginatis, angulis vix rotundatis, disco late cana- 

 liculato, nigro-vittato, antice versus latera valde excavato, ad apicem subtilissime 

 punctulato, elytris valde scabris, pedibus fuscis, tibiis tarsis mandibulisque pal- 

 lidis. Long. "26. 



A very common species, which nearly resembles T. rectus, but the thorax is 

 more distinctly margined, the disc much more excavated, and the black part is 

 much narrower. The elytra are sometimes black, sometimes margined with tes- 

 taceous. This, too, may be Canth. rufipes Say. 



28. T. imbecillis, piceus, ore thoraceque flavis, hoc vix transverso, 

 aatrorsum subangustato, angulis posticis non rotundatis, margine anguste reflexo. 



