250 FAAFll,^' \l. -in DK'oni II.ID.l.;. 



I. IlEi.opiiORrs Fill). 1776. (Gr.. "tubercle ! bearing. ") 



Th()i-a.\ roiiiili. witli Liraiiuhitc <l('|)ressions, and marked with five 

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

 of the middle one. are often very sinucms. Five species have been 

 taken in Indiana, while one other may occur. 



KEY TO INDIANA SPECIES OF HELOPIIORI'S. 



(/. Klyti-n witlidut liilicrclcs or jiltcvuate elevated lines. 



h. Larger, H-T uiui. ; head and thorax shining. s|)arsely punctate; inter- 

 mediate sulcus but slightl.v undulate. oblongi's. 

 hi). Smaller, not over 4.5 iniu. 



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

 eous-brown. 

 (1. Thorax with sides feebly rounded in rmiit. nearly straight be- 

 hind: intermediate sulci strongly sinuate. 47S. laccstris. 

 (hi. Tlmi-ax witli sides regularly rounded; intermediate sulci nearly 

 straight. 47'.>. nitidiua's. 

 cc. Thorax with hind angles rectangular. 



c. Thoi-ax slightly nairowed at base, its sides subsinuate; color 

 light brownish-yellow with indistinct fuscous markings. 



480. LINEATUS. 



ec. Thorax not nai-rowed at base, sides nearly straight. 



4S1. LINEARIS. 



ad. Elytra with tubercles on the Ihii'd. tifth and seventh intervals. 



4S2. TlBERClLATrS. 



//. o]>Joiigus Lee. was, lilce Iani<itris and iiitidulus, described 

 I'rom Lake Superior, and like them may occur ir. northern Indiana. 



4TS (1543). IIelopiiorus lacfstris Lee, Agass. Lake Sup., 1850, 217. 



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

 tinged with greenish; legs reddish-brown. Thorax two-thii'ds wider than 

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

 termediate ones strongly siimate. I'unctured strijie of elytra deep. Length 

 4-4.5 mm. 



Lake and Laporte counties; scarce. ]\Iay 12-August 26. 



471) (1545). IIelopiiorus nitidulus Lee, Proc. Phil. Acad. Nat. Sci.. VII. 

 1855, 357. 

 F]longate, subdepressed. Piceous-brown, shining, distinctly bronzed ; legs 

 Iiale, the femora darker. Tliorax one-half wider than long, the sulci broader 

 and more shallow than* in hn H.-<li-is. the intermediate ones but slightly sinu- 

 ous. Intervals of elytra mnj-e n.in-ow. the stri;e deep. Length 3-3.5 mm. 



Lake (^)unly, near Oshoni and Pine; rare. April 21-May 25. 



