AMERICAN PHILOSOPHICAL SOCIETY. 419 



Order \.—COLEOPTERA. 

 Section I. Pentamkra. — Family I. E.VTOMOPnAGA. — Tribe I. 



ClCINl)ELET,-E. 



CICINDELA. 



Oicimhla Linn. Fabr. Latr. 



Buprcstes Geoff. 



Usscntial Character. — Maxillne inonodactjle ; mcntum trifid, 

 inner division scarcely shorter; intermediate and po.sterior palpi 

 .subequal, filiform ; tibijJB simple. 



Artificial Chararttr. — Antennic filiform; clypeus shorter than 

 the labrum ; maxillae with two very distinct palpi, of which the 

 exterior one is nearly equal to the labial palpi, penultimate joint 

 of the latter hairy; [406] mentum trifid, the divisions nearly 

 equal in length ; feet slender, elongated. Anterior tibia with- 

 out a sinus near the tip. 



Natural Charartcr. — Body oblong, of a medium size, agile, 

 winged, hairy, above depressed, and punctured. 



Ifiad as large as the thorax, exserted, inclined, suboval. Ver- 

 tex rugose, elevated each side upon the eyes, concave on the disk. 

 Antennae filiform, eleven-jointed, shorter than the body, first joint 

 dilated,att<;nuated at base, and inserted in the anterior canthug 

 of the eye, with which and with the clypeus it is nearly in contact; 

 second joint very small, rounded, third cylindrical, longest, and 

 with the next dilated at tip, succeeding ones subequal, or gradu- 

 ally decrcjLsing in length, and furnished with a few rigid hairs 

 at their tips, terminal one obtuse. Clypeus transverse, very short, 

 contracted in the middle. Labrum coriaceous, very large, trans- 

 verse, often dentated, exserted, prominent. Mandibles advanced, 

 prominent, attenuated and incurved towards the tip, dentate 

 within, a large compound tooth at the ba.se, and about three 

 other distinct ones nearer the tip. Maxillae corneous, recurved, 

 1818.] 



