352 [June, 



littoralis. From the preceding species it differs by the sides of the thorax 

 being distinctly flattened behind the middle, and by the feet being of a uniform 

 reddish brown color ; the anterior angles of the thorax are less deflexed, and 

 basal fovea? are somewhat distinct. 



27. A. crassispina, late ovalis, supra aenea, subtus cum pedibus rufo- 

 picea (immatura ?), thorace latitudine duplo breviore antrorsum magis angustato, 

 lateribus oblique rotundatis, postice subexplanatis, angulis anticis hand promi- 

 nulis, basi vix foveata, elytris striis impunctatis postice vix profundioribus, 

 antennis piceis, articulis tribus baseos testaceis, tibiis anticis spina apicali 

 dilatata. Long. 35. 



One female found at Lake Superior. Differs from all the preceding by its 

 broader form, and by the spur of the anterior tibiae being broad and triangular. 



28. A. conflata, ovalis, supra aenea, thorace latitudine fere duplo breviore, 

 antrorsum modice angustato, lateribus rotundatis, angulis anticis haud promi- 

 nulis, basi utrinque vix bifoveata, elytris striis postice paulo profundioribus, 

 pedibus totis nigris, antennis piceis articulis tribus baseos rufis. Long. -36. 



San Francisco, California. Larger than A. impuncticollis, with the thorax 

 less narrowed anteriorly, and less obliquely narrowed on the sides, and with 

 the feet of a uniform black. In form exactly resembles the next, but the third 

 joint of the antennas is not perceptibly carinate at the base. 



* * * Pedes nigri ; antennas basi rufae, articulo 3io carinato. 



29. A. fall ax, ovalis, supra aenea, thorace latitudine fere duplo breviore* 

 antrorsum modice angustato, lateribus rotundatis, angulis anticis haud promi- 

 nulis, basi utrinque vix bifoveata, elytris striis postice vix profundioribus? 

 pedibus nigris, tibiis versus basin picescentibus, antennis articulis baseos 

 tribus rufis, 3io ad basin carinato. Long. *3 *36. 



Le Conte, Ann. Lye. Nat. Hist. 4, 362. 



Lake Superior, New York, Alabama. From a specimen sent me by Dr. 

 Harris, I learn that this is A. ovalis Sturm. Cat., mentioned but not 

 described by Dr. Zimmermann in his essay on Amara. 



30. A. subpunctata, ovalis, nigro-aenea, thorace latitudine fere duplo 

 breviore, antrorsum modice angustato, lateribus rotundatis, angulis anticis haud 

 prominulis, basi utrinque leviter bifoveata paice punctata, elytris striis postice 

 haud profundioribus obsolete punctulatis, pedibus antennisque nigris, his articu- 

 lis duobus baseos rufis, 2 et 3 fortiter carinatis. Long. -31. 



One specimen found at the Rocky Mountains. Differs from the next by the 

 thorax being punctured at the base, with deeper basal foveas, and by the striae 

 of the elytra being slightly punctured. 



31. A. confusa, ovalis aenea vel nigro-aenea, thorace latitudine fere duplo 

 breviore, antrorsum modice angustato, lateribus rotundatis, angulis anticis haud 

 prominulis, basi utrinque vix obsolete bifoveata, elytris striis postice haud pro- 

 fundioribus, pedibus antennisque nigris, his articulis duobus baseos rufis, 2 et 3 

 fortiter carinatis. Long. *32. 



Lee. Ann. Lye. Nat. Hist. 4, 361. 



Abundant in Nebraska, near the Rocky Mountains. 



32. A. p o 1 i t a , ovalis nitide aenea, vel nigro-aenea, thorace latitudine duplo 

 breviore, ante medium antrorsum angustato, lateribus rotundatis ad basin 

 utrinque foveis duabus parvis profundis notato, et soepe obsolete parce punctato, 

 elytris striis postice haud profundioribus, pedibus nigris, antennis piceis, articulis 

 tribus baseos rufis, 2 et 3 fortiter carinatis. Long. -25. 



Lee. Ann. Lye. Nat. Hist. 4, 364. 

 Nebraska and New Mexico; abundant. 



33. A. c o n v e x a , ovalis, brevior, convexa, supra nigro-aenea, thorace lati- 

 tudine duplo breviore, antrorsum modice angustato, lateribus rotundatis, angulis 

 anticis haud prominulis, basi utrinque foveis duabus parvis notata, elytris tenu- 



