250 FAMILY ri. HYDE0P1IILII)-K. 



I. Helophori'S Fab. 1776. (Gr.. "tubercle -i- bearing.") 



Thorax rough, with granulate depressions, and marked with five 

 longitudinal sulci, of which the intermediate, or those on either side 

 of the middle one. are often verj^ sinuous. Five species have been 

 taken in Indiana, while one other may occur. 



KEY TO I?«DIAXA SPECIES OF HELOPHOEU.';. 



fl. Elytra without tubercles or alternate elovated lines. 



I). Larger. .i-T mm.; head and thorax shining, sparsely punctate; inter- 

 mediate sulcu.s but slightly undulate. obloxgus 

 66. Smaller, not over 4..j mm. 



c. Thorax with hind angles obtuse, not narrowed at base ; color plc- 

 eous-brown. 

 fl. Thcrax with sides feebly rounded in front, nearly straight be- 

 hind ; intermediate sulci strongl.v sinuate. 47s. lacustris. 

 (1(1. Thorax with sides regularly rounded ; intermediate sulci nearly 

 straight. 470. xitidulus. 

 cc. Thorax with hind angles rectangular. 



c. Thorax slightly narrowed at base, its sides subsinuate; color 

 light brownish-yellow with indistinct fuscous markings. 



480. LIXEATUS. 



cc. Thorax not narrowed at base, sides nearly straight. 



4S1. LIXEARIS. 



(la. Elytra with tubercles on the third, fifth and seventh intervals. 



4S2. TUBEKCULATCS. 



H. ohlongus Lee. was, like larustris and iiifiduhis. described 

 from Lake Superior, and like them may occur in northern Indiana. 



478 (1543). Helophobis lacusteis Lee. Agass. Lake Sup.. IS.'O. 217. 



Oblong, subdepressed. Piceous-brown. slightly bronzed ; head and thorax 

 tinged with gi-eenish; legs reildish-brown. Thorax two-thirds wider than 

 long, covered with rounded flattened granules; sulci narrow, deep, the in- 

 termediate ones strongly sinuate. Punctured strire of elytra deep. Length 

 4-4.5 mm. 



Lake and Laporte counties ; scarce. ^May 12-August 26. 



479 (1.54."i). IlEi.oPHOKrs AiTiDfLUs Lee, Proc Phil. Acad. Nat Sci., VII. 



IS.V,, 357. 



Elongate, subdepressed. Piceims-bi-own, shining, distinctly bronzed; legs 

 pale, the femora darker. Thorax one-half wider than long, the sulci broader 

 and more shallow than in Uk iistri.'i. the intermediate ones but slightly sinu- 

 ous. Intervals of elytra more narrow, the stri:e deep. Length .^-3.5 mm. 



Lake County, uc.ir Osborn and Pine; rare. April 21-May 2i. 



