THE CHECKERED BEETLES. 857 



Thorax fully as long as wide, the sides feebly tubercnlate. Elytra as de- 

 scribed in key. Length 3-5 rnm. 



lake Comity ; rare. July 13. One specimen taken near Millers. 



1638 (5203). HYDNOCERA VERTICALIS Say, Bost. Journ. Nat. Hist., I, 1835, 



164; ibid. II, 640. 



Elongate, moderately convex. Black, sparsely clothed with suberect 

 hairs; head pale yellowish, with a black oblong spot (often wanting) on 

 vertex ; antenna? and legs pale ; thorax often with a pale stripe or triangu- 

 lar spot each side; elytra with base dull yellow, rarely entirely black, some- 

 times entirely pale with tips only black. Thorax cylindrical, as wide as 

 long. Elytra strongly narrowing from base to apex, two-thirds the length 

 of abdomen ; coarsely, not densely punctate. Length 3.5-4.5 inm. 



Throughout the State ; frequent. .May 17- July 4. Beaten from 

 hickory limbs. 



H. tricr>ii(lfj!a : Lee., greenish olive-bronze, antennae piceous, legs 

 and palpi dull yellow, length 4-4.5 mm., and H. sclmsteri Lee., 5-5.5 

 mm. in length, black, antenna 3 pale yellow, legs and elytra in part 

 reddish-yellow, are both known from Illinois. 



1639 (5200). HYDNOCERA LONGICOLLIS Ziegl., Proc. Phil. Acad. Nat. Sci., 



II, 1844, 44. 



Elongate, moderately convex. Bluish-black ; antennae and legs and 

 often the front of head, pale yellow; elytra usually with a pale subsutural 

 stripe at base, this sometimes dilated so as to leave only the extreme tips 

 black. Thorax cylindrical, one-half longer than wide. Elytra rather closely 

 but not very coarsely punctate, the sides converging towards apex. Legs 

 elongate. Length 3.5-4.5 mm. 



Steuben. Lawrence, Dubois, Perry and Posey counties; scarce. 

 May 23- June 17. Taken by sweeping low herbage, especially in 

 moist places. Said to breed in hickory and witch-hazel. 



1640 (5205). HYDNOCERA TABIDA Lee., Ann. N. Y. Lye. Nat. Hist., V, 



1849, 29. 



Very elongate, subdepressed. Bluish-black ; antenna?, mouth parts and 

 legs pale reddish-yellow. Thorax subcylindrical, nearly twice as long as 

 wide. Elytra parallel, distinctly shorter than abdomen, widely dehiscent at 

 suture, coarsely and rather densely punctate. Legs very elongate. Length 

 5-7 mm. 



Dubois County; rare. May 24-May 25. 



Tribe II. ENOPLIINI. 



The members of this tribe are easily recognizable by having the 

 fourth joint of the tarsi atrophied, the tarsi thus appearing, when 

 viewed from above, to be 4- jointed, except in OrtJinplcum, where but 

 three joints are visible. The Hanks of thorax are separated from 

 the disk bv a more or less distinctlv elevated marginal line. In 



