40 DESCRIPTION OF INSECTS 



tinct ; basal lines indefinite, indented ; base each side punc- 

 tured. 



Elytra with impunctured striae and depressed interstitial 

 lines, pale rufous or testaceous with a common black disk, 

 which is dilated behind the middle and attenuated before. 



Feet testaceous. 



A greater portion of the antennae and feet were wanting 

 in the specimen, but one of the anterior tarsi which was 

 remaining was much more dilated than that of the preceding 

 species. From the Missouri. Nuttall. 



9. F. *longicornis apterous, dark piceous, beneath paler j 



antennte rufous ; feet testaceous. 

 Length rather more than half an inch. 



Carabus longicornis. Melsh. Catal. 



Body glabrous, dark piceous, beneath piceous. 



Front longitudinally indented each side; antennas rufous, 

 half as long as the body, the joints attenuated towards their 

 bases ; labriim truncate, rufous ; palpi rufous. 



Thorax contracted behind, edge slightly excurved at the hind 

 angles, anterior transversely indented line profound, dor- 

 sal line at base abruptly canaliculate, basal lines dilated, 

 suhorbicular, profound, scabrous, extending from near the 

 dorsal line to the angle. 



Elytra^ interstitial lines of the disk convex, glabrous, striae 

 obtuse, punctures approximate, transverse, extending upon 

 the sides of the striae, sixth and seventh striae obsolete. 



Feet testaceous. 



This species is not of frequent occurrence, inhabits moist 

 places under stones. It appears to belong to the genus 

 Percus of Bonelli. 



10. F. *unicolor apterous, glabrous, black; tips of the an- 



