496 TRANSACTIONS OF THE 



piceous, witli a yellow hind margin ; antennae and palpi testace- 

 ous ; labrum white somewhat silvery ; thorax black-brown, broad 

 as the elytra at base, gradually narrowed before before, basal 

 line sinuated each side and angulated in the middle, punctures 

 obsolete on the disk, dorsal line obsolete, basal lines none, lateral 

 margin white somewhat silvery near the edge, edge black-brown ; 

 scutel not perceptible ; elytra black-brown, striae thirteen, towards 

 the tip and margin obsolete, punctures distant, impressed only on 

 the lateral pari[et]es of the striae, interstitial lines convex, margin 

 whitish somewhat silvery near the edge, dilated and undulated 

 behind with several punctiform hyaline maculae ; pectus and 

 postpectus punctured, piceous; feet testaceous ; venter pale pice- 

 ous impunctured. 



This specimen I obtained near Great Egg Harbor, New Jersey, 

 on the skirt of a forest. 



ELAPHRUS Fabr. 



Antennae hardly longer than the head and thorax, somewhat 

 more robust towards the tip ; external maxillary and labial palpi 

 with the ultimate joint subcylindrical, longer and larger than the 

 preceding joint; labium profoundly emarginate; maxillae hardly 

 ciliated on their external side ; thorax subcylindrical, somewhat 

 dilated in the middle, unequal, longer than broad; anterior tibiae 

 emarginate on the inner side. 



E. RiPARius ? — Dark brownish-green, a little bronzed : elytra 

 with dilated, orbicular, impressed spots, and three elevated studs 

 each side of the suture. 



Length more than three-tenths of an inch. [81] 



E. ripariics Fabr, 



Body dark brownish-green, opake, beneath rather paler, pol- 

 ished, glabrous, punctures very numerous, crowded ; head slight- 

 ly corrugated between the eyes; antennae and labrum blackish; 

 mandibles green each side at base, piceous within near the tip ; 

 palpi above piceous, beneath paler ; gula impunctured ; thorax 

 broadest rather before the middle, narrower than the elytra, a 

 transversely indented curved line before the middle, and a longi- 

 tudinal abbreviated one, lateral edge hardly prominent, slightly 

 excurved behind, posterior angles inconspicuous, base not wider 



[Vol. II. 



