AMERICAN PniLOSOrniCAL SOCIETY. 427 



lines on the disk, suture, and curved branch near the base, 

 green ; tail testaceous. 



V. dursalisj Journal of the Academy of Natural Sciences, vol. 

 1, p. 20. 



Length nearly three-fifths of an inch. 



Inhabits New Jersey. 



Dc»c. Head bronzed, naked, edges green ; antenna; brown, 

 basal joints green, the third hairy before; labruni white, not 

 eniarginate at the anterior angles, broad before, and furnished 

 with a single tooth, eight punctures very near the edge, of which 

 six arc equidistant on each side of the tooth, the others remote ; 

 clypcus almost obsolete above ; mandibles white above and be- 

 neath, tips and teeth within [416] black-green, a very strong 

 tooth beneath, near the tip of one mandible, the other simjily a 

 little angulated in that part; palpi white, tip of the terminal 

 joint of each blackish. Trunk cupreous, covered each side by 

 short, dense, prostrate, cinereous hair; thurax bronzed, varied with 

 green, margin and longitudinal dorsal line hairy ; scutel green or 

 bronze ; elytra white, with very minute, irregular punctures, and 

 afew largeroneson the anterior margin; suture and a lunated branch 

 near the scutel, curvingon each elytron and abbreviated behind, the 

 middle of the base green, disk with two abbreviated green brack- 

 et-formed lines, of which one curves outwards and the other in- 

 wards, respectively terminating at one end opposite the centre of 

 the other. Abdomen, venter bronzed, segments margined with 

 purple, having dense, cinereous, prostrate hair each side; tail and 

 tip of the last abdominal segments testaceous. 



This very fine and beaiitiful species I discovered a few years 

 ago on the sea beach of New Jersey. In several of the Cieinde- 

 lae there is a strong tooth on one of the mandibles near the tip, 

 beneath pointing downwards, which is very conspicuous in the 

 present species; these teeth arc I believe never found on both 

 mandibles, otherwise the mouth could not be properly closed, ac- 

 cordingly the tip of the armed jaw is always beneath the other 

 in repose ; neither is the weapon confined to the right or left 

 mandible, but is found upon either indifferently, whilst upon the 

 corresponding part of the other, is usually a very small angle. 

 It must be remarked that this insect seems to approach a species 

 1818.] 



