THE GEOUND BEETLES. 



159 



U. Hind angles of thorax prominent ; humeri distinct. 



n. Elytra oblong, scarcely widened behind ; abdomen wholly pale ; 



size small, not over 7 mm. 291. janthinipennis. 



nn. Elytra gradually but distinctly dilated behind ; abdomen dark, 



at least on sides. 



o. Narrow lateral edge and epipleura of elytra pale yellow; 



Icnees, sides of abdomen and metathorax dusky. 



292. lATBiiAUS. 



00. Lateral edge and epipleura of the same color as the elytra ; 

 front angles of thorax obtusely rounded ; very small, not 

 over ^.5 mm. 293. medtos. 



2'S (97?.). BeACHYM S ALTERNATES Dcj., Sjl. I, 182.5, .31<i, 



f^lytra blnish-black ; abdomen fuscous. Thorax at mid- 

 dle about as wide as long, front margin slightly concavt^. 

 the angles obtuse but distinct, hind angles rectangular. 

 Elytra distinctly costate, the intervals between the ridges 

 finely and sparsely punctate. Length 14-15 mm. (Fig. 

 X7.) 



Soutliern half of Stato ; froqiient. April 6- 

 Jiilv 4. 



Fig. 87. X H. 

 (Original.) 



*279 (975). Brachykus tobmentarhs Lee, Ann. Lye 

 Nat. Hist, IV, 1S4S. 200. 

 Thorax as wide as lon.^', front angles obtuse but distinct; hind angles 

 rectangular, not prominent. Elytra costate, the humeri distinct, broadly 

 rounded. Length 14-15 mm. 



Vig'o aiKl Posey comitifs; scarce. I-Tihernates. Januaxy 1~ 

 April 19. Very close to alternaiis arid probably only a variety of 

 that species. 



280 (974). Beachynus deykollei Laf., Rev. Zool., 1841, 42. 



Antennae reddish-yellow, the apical portion darker; alirtumen piceous. 

 Thorax distinctly longer than wide, slightly narrower than the head ; front 

 margin concave, the angles obtuse, hind angles distinct but not prominent. 

 Elytra subcostate, the humeri rounded but evident. Length 14-15 mm. 



Knox County; rare. 

 2S1 (962). 



July 4. 



Fig. 88. X 2. 

 (Original.) 



[11—2.3402] 



Brachy'nus americanus Lee, Proc. Phil. 

 Acad. Nat. Sci., II, 1844, 48. 

 Elytra black, but faintly tinged with blue; four basal 

 joints of antennse pale, tlie remainder gradually dusky; 

 abdomen almost black. Thorax wider than long, the 

 base gradually constricted, hind angles rectangular. Ely- 

 tra distinctly but not strongly costate; intervals wide 

 and finely punctured; humeri very much sloping, not at 

 all distinct. Length 10-11.5 mm. (Fig. 88.) 



Vigo, Knox, Crawford and Pei-i'y counties; fre- 

 quent. April 23-October 21. 



