OF THE UNITED STATES. ] . .7 



scure sanguined, elytria stiiis subtilius punctatis, interstitiis confertim rugose punotolatiB. Long. 

 •43— -55. 



Lake Superior and Vermont. The antennas and legs are black, with a Faint pitchy lus- 

 tre: the sanguineous colour of the Bides of the thorax is sometimes almost wanting; at 

 other times it is quite bright, and extends upon the indexed portion, and even to the anterior 

 margin ol th< prosternum. 



6. D. pubescens, ater, sabnitidus, pub. seen-;, thorace latitudine \ i \ I analioa- 

 lato, lateribus postice parallelia antice rotandatis, sal dense punotato, elytris Btriis subtiliter puncl 

 interstitiis confertim rugose punctalatis, antennarum basi pedibusque fusco testae is. I. mg. "86. 



Agriotes pub s ens Melsheimer, Proc. Acad. Nat. So. -, -17. 



Pennsylvania and Lake Superior. Smaller and more robust than the preceding, and 

 with the punctures of the thorax less dense: differs from D. avulsus bj its larger Bize, 

 shorter and more densely punctured thorax, and by its much less lustrous surface. The 

 antennsa in one specimen are fuscous, in the other black, with the basal joints testaceous. 



7. D. a v u 1 8 u s , niger, nitidus, minus dense helvo-pubescens, thorace latitudine longiore post 

 canaliculate, lateribus paulo obliquis, antice rotandatis, paroias grossius panctato, angulis post 

 dirergentibns, elytria striis punctatis, interstitiis rage panctulatis et ragosis, antennia ped afis. 



Long. -3. 



Pennsylvania and Vermont Differs from the preceding by its more brilliant colour, 

 brownish and less dense pubescence, and by the coarser and mure distant punctures of 

 the thorax. 



8. D. sordidus, fascus, dense cinereo-pabescens, thorace latitudine non longiore, lateribns 

 rallelia antice rotandatis, postice canaliculato, confertim punctato, angulis | >> » ~ t i < -i -i non divergentibus, 

 elytria striis punctatis, interstitiis confertim rugose punctulatis, antennia rufia pedibus tla\ is. L 



New York, Mr. Guex : a specimen also in Dr. Harris 1 collection. Resembles somewhat 

 I), mancus, but is less robust; the mandibles, although obtuse, are not dilated and emar- 

 jjinati . a- in that species: it is sufficiently distinct from all the other species of tin- divi- 

 sion by its densely and more finely punctured thorax, and mne dense pubescence. 



'■'. D. stabilis, atcr, fere opacus, pubescens, thorace latitudine longiore, lateribus Bubparalli 

 antice rotandatis, alutaceo, ante medium confertim subtilius punctato, angulis posticis vi\ divergenti- 

 bus, elytris ssepe | is, striis acntia punctatis, interstitiis plat rtissime | tno- 

 tulati-, antennia pedibusque picco-tcstaccis. Lou I i. 



Lake Superior, abundant A species easily recognised, and verj remarkable for the 

 sculpture of the thorax, the surface of which is finely chagrined, with distinct punctun - 

 only in front of the middle: the head i- denser) punctured. Bj a verj p twerful lens, the 

 chagrining of the thorax is Been to be produced by an infinity of verj small punctun 



B.- 



10. D. limosus, atcr, flavo-pubcsccns, clypeo trunoato, thoraoe latitudim re, lateribuj 



parallel] em rotandatis, postice canaliculato, confertim punctato, ai lions 



non divaricatis, elytris teataccis, striis inotatis, interstitiis confertim r | 



tennis pedibusque rufo-testaceis. Long. •■• 



