31 Dr. E. Brendel's Synopsis of the genera 



B. conjuncta, Lee. % , anterior tibiee in the middle armed with a spine, and 

 the three last antennal joints much enlarged. Long 1.8 — 2.0 

 m. m. Sab. — Northern States. 



b. The thoraeical sulcus connecting the two lateral grooves faintly. 



B. foveata, Lee. The three equal thoraeical grooves are very ample and punc- 

 tured, the thorax impunctate; first abdominal dorsal segment 

 faintly bistriate, strise distant. Long 1.4 m. m. Sab. — Cal'a. 



B. dentata. Say. % , first abdominal dorsal segment lobed, the lobe overhang, 

 ing the third segment. Long 1.9 m. m. Hub. — North'n States- 



B. Illinoiensis. Brendel. % . First abdominal dorsal segment two-lobed, the. 

 acute lobes overhanging the first segment, the intermediate 

 trochanters armed with a spine. Long 1.5 m.m. Hab. — Illinois. 



B. Floridana, Brendel. % . The two first segments two-lobed. Long 1.7 m. m. 

 Sab — Southern States. 



B. abdominalis, Aube. % . The three first segments two-lobed. Long 1.9 m. m. 

 Sab. — Eastern States, 

 ff The median thoraeical groove smaller. Sulcus wanting. 



a. Lateral grooves on the lateral surface. 



B. laniger, Lee. First abdominal segment bistriate near the middle. % ,with 

 the three penultimate antennal joints transverse, lunate; the 

 last ovate. Long 2.0 m. m. Sab. — Eastern States. 



B. cavicornis, Brendel. Differing from B. luniger only by the three last joints 

 of the antennae in the % , of which the ninth is triangular, the 

 tenth transverse, oblunate, the last triangular, emarginate. 

 Long 2.0 in. m. Sab. — Pennsylvania. 



b. First abdominal segment without impressed lines. £, the fifth 

 antennal joint larger. 



B puncticoliis, Lee. The three grooves on the head large, the thorax punctu- 

 late, the abdominal striae faintly indicated. Long 1.3 m. m. 

 Sab. — Eastern States, 



B. compar, Lee. The frontal groove faint, the thorax stronger, punctate. Long 

 1.2 m. m. Sab. — California. 



B. subtilis, Lee. The three grooves on the head small, the thorax not punc- 

 tured. Long 1.3 m. m. Sab. — California. 



c. First abdominal dorsal segment with two approximate, faintly 

 impressed, diverging strise. 



B- congener. Brendel. Testaceous, punctate. Long 1.0 m. m. 



B rubicunda, Aube. Piceous-black, elytra red, thorax impunctate. Long 1.5 — 



1.9 in. m. 

 B. scabra, Brendel. Thorax strong, confluently punctured, black. Long 1.33 



m. m. Sab. — Eastern States. 



d. First abdominal segment with two distant strise. 

 B. propinqua, Lee. Long 1.4 m. m. 



ttft The thoraeical grooves very small or obsolete. 



B. tomentosa, Lee. Lateral thoraeical grooves very small on the lateral surface. 



B. inornata, Brendel. The thoraeical foveae wanting; head plain, with two 

 faint punctures before the eyes; elytra plain, polished ; strise 

 wanting. First abdominal segment at base with a broad bar. 

 Lon<' 1.4 m. m. Sab. — South Carolina. 



