20 [February, 



1. Thorax with' an anterior fovea and acute tubercle ; anterior tibiae tridentate. 



A. Clypeus bidentate at tip, 



1. L. m r i 0, oblongus, postice paulo latior, subtus ferrugineus, supra picens 

 vel ferrugineus, capita traneversim requaliter carinato, thorace parce punctate, 

 lateribus subangulatis, elytris punctato-striatis, pygidio vix punctato ; (maxii- 

 larum galea bidentata.) Long. "53 -6. 



Bothynus morio Lec. Journ. Acad. Nat. Sc. 2d ser. 1, 87. 



Middle States, not rare. Differs from the next by the less deep punctures of 

 the elytra, by the less dense and less coarse punctures of the thorax, and the 

 more distinctly angulated sides of the latter, and by the pygidium being hardly 

 punctured. The body is also more elongated and less dilated posteriorly. 



2. L. gi bb OS u s, oblongus, postice latior, subtus ferrugineus, supra picens 

 vel ferrugineus, capite transversim carinato, rugoso opaco, thorace parce fortius 

 punctato, lateribus vix angulatis, elytris ssepissime fortius punctato-striatis, 

 pygidio parce punctato; (maxillarum galea bidentata.) Long. -48 "67. 



Scarabceus ffibbosusDe Ueer, 4, 322 ; tab. 19, fig. 7. 



Podalgus variolosus Burm. Lamell. 3, 12]. 



Ligyrus variolosus Burm. Lamell. 3, 542. 



Var. Elytrus minus profunde punctato-striatis, seriebus internisfere obliteratis. 



Bothynus obsoletus Lec. Journ. Acad. Nat. Sc. 2d ser. 1, 87. 



Our most common species; found from Massachusetts to Texas, and west- 

 wardly to Santa Fe, Colorado River and Oregon. The specimens from Califor- 

 nia, Oregon and Texas differ in having the sides of the thorax more regularly 

 rounded, and in the Californian and Oregon specimens the inner striaj of the 

 elytra are frequently almost obliterated, and the thorax scarcely foveate. From 

 the locality there can be no doubt that this is De Geer's species, with the de- 

 scription of which it corresponds. The differences between this and the pre- 

 ceding have been already mentioned ; from the next it differs (apart from the 

 maxillaB) by the less deep punctures of the elytra, and by the rugosely punc- 

 tured and almost opake clypeus. 



3. L. j u V e no u s, ferrugineus, supra et subtus concolor, postice dilatatu?, 

 capite transversim carinato, antice fere ]a;vi, thorace grossius minus dense punc- 

 tato, lateribus rotundatis, elytris fortiter punctato-striatis, pygidio parcius punc- 

 tato ; (miAxiUarum galea tridentata.) Long. -53 -6. 



7 Li/gerus juvencu3 Bnrm. Lamell. 3, 542. 



IFodalgusJuvencusBnrm. ibid. 3, 121. 



? Geotrupes juvencus Fabr. Ent. Syst. emend. 1, 32 ; Syst. EI. 1, 20. 



? ScarabcBUs juvencus Oliv. Ent. 3, 45, tab. 8, fig. 66, and tab. 16, fig. 143. 



Bothynus neglectus Lec. Journ. Acad. Nat. Sc. 2d ser. I, 87. 



Georgia and South Carolina, common. The description of the clypeus " finely 

 wrinkled, bidentate, the frontal suture elevated, abbreviated at the sides, slightly 

 emarginate in the middle," given by Burmeister, leaves a doubt in my mind 

 whether our species are really identical. The clypeus in mine is nearly smooth, 

 and the frontal carina is in no respect different from that of the two preceding 

 species. The references to Fabricius and Olivier are acknowledged by Burmeister 

 to be doubtful, and it must be a matter of regret that the name was not allowed 

 to become obsolete. 



B. Clypeus at tip, with only a single elevated tooth. 



4. L. r u g i n a s u s, ferrugineus, supra et subtua concolor, postice paulo latior 

 capite rugose punctato, ad apicem acumine unico mucronato, transversim leviter 

 carinato, thorace minus dense punctato, lateribus rotundatis fovea antica rugosa, 

 elytris regulariter sat fortiter punctato-striatis, pygidio vix punctulato, (maxil- 

 larum galea tridentata.) Long. 65, 



One specimen found at Ringgold Barracks, Texas, by Lieut. Haldeman. In 

 form and sculpture cf the head and thorax this species exactly resembles L. 



