THE GROUND BEETLES. 59 



Chird; the puucUires of the third, fourth ujiil seventh intervals fine hut 

 distinct, each bearing a long hair readily visible under a lens when viewed 

 from the side. Length 3 mm. 



Posey and Clark counties; rare. April 18-May 6. Taken from 

 beneath boards on the banks of the Wabash and Ohio rivers. 



XII. Clivina Lat. 1802. (A proper name.) 



Small black or reddish brown species closely allied to Dyschinus 

 but having the thorax more or less quadrate, the sides either strong- 

 ly oblique or rounded near base ; the disk with a median impressed 

 line. Palpi similar in both sexes, not dilated nor excavated in the 

 male. They occur in damp places, along streams and lakes, and 

 may be captured by throwing water on their burrows and then 

 picking them up as they emerge. Some of the species, as probably 

 some of the Dijschirms, hibernate in the perfect stage. Twenty- 

 two species are known from the United States. Of these seven 

 have been taken in Indiana, while three others perhaps occur. 



KEr TO INDIANA SPECIES OF CLIVINA. 



a. Middle tibice with a spur near the outer tip; clypeus with a lobe each 

 side ; dorsal punctures of elytra three or more. 

 b. Front femora dentate near the tij) ; color black. 59. dentipes. 



66. Front femora thickened, not dentate ; color reddish-brown or piceous. 

 c. Vertex sulcate. 

 d. Vertical groove deep and long; head sparsely punctate behind 

 the eyes ; larger, 6-6.5 mm. 60. impkessifeons. 



dd. Vertical groove shorter, more shallow; head and thorax punc- 

 tured; smaller, 5-5.5 mm. 01. pdnctigeka. 

 cc. Vertex not sulcate ; head and thorax smooth ; basal angle of 

 thorax dentate. 62. RUEictrNDA. 

 0(7. Middle tiblEe without a spur on the outside of tip. 



e. Clypeus with a lobe each side; front of head with a pit; front 

 femora beneath deeply sinuate near the tip; dorsal ])\uictures 

 three or more. 

 f. Color in part or wholly brownish-red. 

 g. Elytra entirely light brownish-red. 03. rufa. 



gg. Elytra brownish-red with a broad black suture. coixakis. 



ff. Color black; legs dark reddish-brown, antennae paler. 



64. AMEBICANA. 



ee. Clypeus rounded at sides; front femora thickened, not sinuate be- 

 neath ; dorsal punctures two or none. 

 7(. Vei-tex sulcate; thorax elongate ; color reddish-lirown. febrea. 

 hh. Vertex not or faintly sulcate; thorax subquadrate; black, elytra 

 with reddish spots. 

 J. Thorax nearly smooth. 05.' bipustulata. 



a. Thorax punctate. postica. 



