THE OIL AND BLISTER BEETLES. 1355 



KEY TO INDIANA SPECTJis OF NEMOGNATHA. 



!/. Palpi rather short, not very slender, hairy; spurs of bind tibire equal 

 in size, rather slender. 

 h. Elytra finely and very densely jmnetured; thorax not ^vider behind. 

 c. Thorax quadrate ; maxillie two-thirds or more the length of body. 

 (7. Thorax densely punctured ; color variable. piezata. 



(1(1. Thorax sparsely punctured; elytra either wholly yellow or brown- 

 ish-yellow, with a black stripe. 2513. punctulata. 

 (x;. Thorax nearly oval, yellow, with black spots, finely and rather 

 sparsely punctured; maxillae half the length of body. 



2.514. NEIIOKENSIS. 



hd. Elytra less finely and less densely punctured, yellow, with a wide 

 black stripe; thorax yellow, rather sparsely punctured. 



CEIBEARIA. 



aa. Palpi longer and more slender, not hairy but only pubescent; maxillae 

 less than half the length of body ; spines of hind tibiae broad, obtuse, 

 c. Thorax rather finely and densely punctured ; elytra wholly orange 

 yellow or rarely with a broad black stripe. 251 ."i. vittigeea. 



cc. Thorax very coarsely, sparsely and irregularly punctate; elytra yel- 

 low or dark brown. 2516. ckibeicollis. 



y. piezata Fab., male with fourth ventral broadly sulcate, fifth 

 impressed, length 7-11 mm., is said to occur from the "Atlantic Re- 

 gions to Colorado and Montana. ' ' 



2513 (8032). Nemognatha punctdlata Lee, Proc. Phil. Acad. Nat. Sci., 



VI, 18.5.3, 347. 

 Elongate-oblong. Orange yellow, sparsely clothed with yellow hairs ; 

 antennae (except at base), tarsi and greater part of under surface blackish. 

 Head finely and densely punctate, with front flat; occiput swollen. Tho- 

 rax one-third wider than long, sides almost straight, disk sparsely, coarsely 

 and irregularly punctate. Elytra minutely and very densely punctured. 

 Length 8-11 mm. 



Jackson County; rare. July 16. The form described is var. 

 flavipcinns TJhler. In the typical form the upper surface is brown- 

 ish-yellow, .the elytra with a black stripe. 



2514 (80.34). Xemognatha nemoeensis Hentz., Trans. Amer. Phil. Soc. 



Ill, 1830, 258. 

 Elongate-oblong. Black, rather thickly i/lothed \\'ith short, erect black 

 hairs; mandibles, middle of head and thorax yellow, the latter usually with 

 two black spots on basal half which are often united. Maxillii» one-half 

 the length of body. Length 6.5-7.5 mm. 



Crawford County; rare. June 2-June 28. 



,V. cribaria Lee., male with fourth and fifth ventrals impressed 

 and with median tufts of black hairs, length 6.5-8.5 mm., ranges 

 from "the Middle and Western States to New Mexico." 



