inhabiting the United States. 147 



* Sp. 5. elongatus. 



Angustior; niger, nitidus ; thorace, elytrisque cyaneo-margina- 

 tus ; mandibulis, labio, impressionibusque capitis et thoracis rugo- 

 sis ; caiina humerali longiore. 



Habitat in Territorio Missouriensi ubique. Tab. I., Jig. 5. 



Pasimachus depressus, var. a. Say. Trans. Am. Philos. Soc, 

 New Series, Vol. II., p. 19. 



Niger nitidus ; corpus angustius, convexiusculum ; mandibular 

 transverse rugosae, labrum fortitcr striatum, versus medium utrin- 

 que impressum ; impressionibus frontalibus profundis, rugulis paucis 

 indistinctis ; linea obliqua fortitcr impressa, rugis notata. Thorax 

 lateribus minus rotundatus cceruleo-marginatus ; impressione trans- 

 versa anteriore ad latera profunda, medio obsoleta ; linea longitu- 

 dinali satis distincta ; basalibus triangularibus profundis, rugulis 

 paucis notatis. Elytra longiora, angustiora, apice minus subacu- 

 minata, cceruleo-marginata, lineis punctorum levibus notata, quae 

 sicut in punctulato, interdum obso'etae sunt. 



$ 2. ELYTRA STRIATA. 

 * Sp. 6. substriatus. 



Niger, nitidus, subcyaneo-marginatus; mandibulis oblique striatis 

 impressionibus frontalibus postice obsoletis, antice rugosis ; thora- 

 cis impressionibus parvis, triangularibus, profundis, rugosis ; elytris 

 levissime striatis, transverseque rugosis. 



Habitat Long Island, provinciae Novi Eboraci. Tab. \.,ftg. 6. 



Pasimachus substriatus, LcConte, per Halderman, Proceed. 

 Ac. Nat. Sc. Phil. Vol. I. p. 313. 



Niger, nitidus, subcyaneo-marginatus ; caput rugulis paucis 

 pone oculos ; impressionibus frontalibus postice vix conspicuis, an- 

 tice rugis paucis, linea obliqua profunda, valida, rugulis notata; 

 labrum rugosum, antice medio tridentatum, dente intermedio ma- 

 jore, rotund ato ; mandibulx oblique striatic. Thorax rugulis paucis 

 ad latera, marginc subcyanca, angulis posticis obtusis ; impressione 



