1855.] 355 



43. A. gibba, brevior, subovata, supra nigro-asnea, thorace latitudine duplo 

 breviore, antrorsurn subangustato lateribus oblique rotundatis, postice minus 

 distincte cxplanatis, angulis posticis subobtusis, basi utrinque bifoveata, foveis 

 punctatis, elytris tenuiter striatis ; antennis palpis pedibusque rufis, femoribus 

 obscuris. Long. *3. 



Lee. Agassiz' Lake Superior, 207. 



Celia gibba Lee Ann. Lye. Nat Hist. 4, 360. 



Lake Superior; two males. Eroader and more convex than the preceding, 

 with the thorax more gradually narrowed anteriorly and less flattened on the 

 sides, which are more obliquely rounded. 



c. Thorax antrorsurn subangustatus ; elytra striis fortiter punctatis, stria 

 * scutellari libera. 



44. A. r u b r i c a, piceo-rufa, elliptica nitida, thorace latitudine hand sesqui 

 breviore, antrorsurn subangustato, lateribus rotundatis, angulis posticis apice 

 rotundatis, basi utrinque bifoveata, foveis parvis punctatis, elytris suboeneo- 

 micantibus, striis fortiter punctatis. Long. -27 32. 



Haldeman, Proc. Acad. Nat. So. 1, 301. 



Middle and Southern States, not common; larger than A. musculus, with a 

 longer thorax, and slightly rounded posterior angles. 



45. A. s u b ae n e a, supra piceo-aenea, elliptica nitida, thorace latitudine vix 

 breviore, antrorsurn subangustato, lateribus rotundatis, angulis anticis subpro- 

 minulis, posticis rectis baud rotundatis, basi utrinque biloveata, foveis parvis 

 punctatis, elytris striis fortiter punctatis, antennis palpis pedibusque rufis. 

 Long. 27. 



Acrodon submnea Lee. Agassiz' Lake Superior, 208. 



Lake Superior; from the others of this group it differs by the thorax being 

 more deeply emarginate at the apex, with more prominent anterior angles. 



46. A. musculus, nigro-picea, aenescens, vel rufa, nitida, elliptica, thorace 

 latitudine plus sesqui breviore antrorsurn angustato, lateribus rotundatis, angu- 

 lis posticis rectis, basi utrinque bifoveata, foveis parvis punctatis, elytris striis 

 profundis vel fortiter vel subtilius punctatis, antennis palpis pedibusque rufis. 

 Long. -22. 



Amara musculis Say, Trans. Am. Phil. Soc. 2, 35. Dej. Sp. Gen. 3, 447. 



Acrodon musculus et contempta Lee. Ann. Lye. Nat. Hist. 4, 366. 



Middle, Southern and Western States, to the Rocky Mountains. Varies some- 

 what in the distinctness of the punctures of the striae of the elytra, but the dif- 

 ference is not specific. 



47. A. harpalina, oblongo-ovalis rufo-picea nitida, thorace convexiusculo, 

 latitudine sesqui breviore, ante medium rotundatim angustato, angulis anticis 

 haud prominulis, posticis rectis haud rotundatis, basi utrinque confertim punc- 

 tata biloveata, elytris striis punctatis, antennis palpis pedibusque pallidioribus ; 

 capite maiusculo. Long. -28. 



Two females from Santa Fe, New Mexico. Less elliptical than the others 

 of this group, with the sides of the thorax parallel behind the middle and very 

 slightly flattened. 



d. Thorax subquadratus, antrorsurn angustatus. 



48. A. rectangula, oblongo-ovalis nigro-picea vix aenescens, thorace la- 

 titudine sesqui breviore, ante medium paulo angustato, ad apicem vix emargi- 

 nato. lateribus late roturdatis, angulis posticis rectis haud rotundatis, basi punc- 

 tata uirinque bifoveata, elytris striis fere impunctatis, postice haud profundiori- 

 bus, antennis palpis pedibusque rufis. Long. -35. 



Oregon, Col. McCall, one male ; a female found by meat San Francisco. 



49. A. aurata, oblongo-ovalis, supra nitide aenea, thorace latitudine ses- 

 qui brevioie, ante medium paulo annustata, apice vix emarginato, lateribus 

 late rotundatis, angulis posticis vix rectis, subrotundatis, basi punctulata utrinque 



28 



