344 [December, 



tundatis, elytris confertissime scabro-punctatis, scutello, sutura, margine, coxis 

 femorumque basi pallidis. Long. "47. 



Middle and Southern States ; rare. The antennae are black, with the under 

 surface of the two basal joints pale ; the head is very densely punctured. 



4. P. discoideus, niger, thorace pallido transverse, late marginato, 

 lateribus leviter rotundatis, minus parce punctate, subcanaliculato, medio nigro- 

 maculato, elytris confertissime scabris sutura margineque tenuibus pallidis, 

 antennarum basi femoribusque pallidis, his apico piceis. Long. '47. 



New York ; one specimen, Mr. Guex. The head is thickly punctured: the 

 spot on the thorax does not extend farther than the transverse impression towards 

 the apex. 



5. P. modestus Lee. Agass. Lake Sup. 228; Ca>itkaris modestus Ss^y, 

 J. Ac. Nat. Sc. 3, 179. New York and Lake Superior j the fuscous spot of the 

 thorax sometimes occupies nearly the whole surface ; the feet and antennce vary 

 from rufous to dark fuscous. 



6. P. diadema Dej. Cat. 118 : Cantharis diadema Fabr. Syst. El. 1, 

 298. Lake Superior, Middle and Southern States. What I consider as this 

 species is distinguished from all the preceding by the head being much less 

 densely punctured, the thorax is subtransverse and smooth, and the elytra with- 

 out pale margin ; the feet are always black. Length -46. 



7. P. pruinosus, niger cinereo-pubescens, capite thoraceque rufis,illo 

 dense punctate, hoc subtransverso, late marginato, lateribus leviter rotundatis, 

 canaliculate, ante medium subtiliter punctate, elytris subtiliter rugose scabris, 

 abdominis apice lateribus pedibusque rufis. Long. -52. 



Oregon ; Mr. Wilcox. This species bears the same name in the Berlin 

 Museum, to which it was also sent by Mr. Wilcox. 



8. P. comes, niger cinereo-pubescens, capite thoraceque rufis, illo dense 

 punctate, hoc subtransverso, late marginato, lateribus rotundatis, canaliculate, 

 ante medium subtiliter punctate, elytris minus subtiliter rugose scabris, coxis 

 vix testaceis. Long. -4. 



California, San Francisco. Very similar to the last, but in addition to the 

 characters of the diagnosis, the sides of the thorax are mere rounded, and the 

 posterior angles are small and prominent. 



9. P. tementosus. Cantharis tomentosa Say, J. Ac. Nat. Sc. 5, 165 ; 

 Po'Jabrus rufiolns Mels. Pr. Ac. Nat. Sc. 2,304. Pennsylvania, Dr. Melsheimer. 

 My specimen has the abdomen rufous, with a small fuscous spot at base. 



10. P. rugosulus Lee. Agass. Lake Superior, 229. Very common in 

 every part of the United States, and is usually mistaken for P. diadema, with (he 

 description of which it does not at all agree. The thorax is narrowed in front, 

 and the whole surface is strongly punctured. 



11. P. f rater, niger capite confertim punctate, mandibulis, fasciaque sub- 

 oculari testaceis, thorace subtransverse, antrersum vix angustato, lateribus late 

 marginatis subrotundatis rufis, disco canaliculate, ante medium subtilius punctate, 

 elytris valde rugose scabris. Long. '4. 



One specimen ; Georgia. Larger than the last, which it very closely resem- 

 "bles; the thorax, however, is not narrowed in front, and the convex part of the 

 disc is smooth; as in the preceding, the elytra are very rough, with two indis- 

 tinct lines; the head is thickly punctured. 



