198 NORTH AMERICAN 



lateribus medio parum rotundato-ampliatus ; superne convexus, caeruleus, 

 nitidus, crebre, sat profunde punctatus, dorso postico obsolete, longitudi- 

 naliter carinatus. Scutellum vix conspicuum. Elytra prothorace duplo 

 latiora et illo vix breviora, lateribus recta, apice truncata, superne leviter 

 convexa, caerulea, nitida, profunde, crebre punctata, bumeris fere rectangu- 

 laribus, elevatis. Abdomen elytris angustius, immarginatum, elongatum, 

 cylindricum, nigro-caeruleum, nitidum, subtilissime, crebre punctulatum, 

 segmentis quatuor primis constrictis. Pedes modice elongati, dilute fiavi, 

 coxis anticis concoloribus ; tarsis longioribus, articulo quarto profunde bilobo. 



As this description is full, clear, and succinct, and does not corre- 

 spond with any form known from the Pacific Coast, even in its 

 general character, I am strongly inclined to believe that the locality 

 is erroneous, and consequently no number is attached, it being pre- 

 ferable to consider it at present as a doubtful species. 



Total number of species described 172 



Total number of specimens enumerated 1497 



Number of species described from 5 or more specimens 70 



Number described from 4 specimens 4 



Number, described from 3 specimens 7 



Number described from 2 specimens 28 



Number described from 1 specimen 58 



Number not seen ; description transcribed 5 



