THE ANT -LIKE FLOWER BEETLES. 1329 



about as wide as long, widest in front of middle ; surface densely and rather 

 coarsely punctate and usually with a distinct median impressed liue. Ely- 

 tra densely and coarsely punctate. Length 7-S mm. 



Northern third of State; frequent on alder and other shrubs 

 about the borders of lakes. June 24-August 27. 



2405 (7S74). STEREOPALPI s VESTITUS Say. Jouru. Phil. Acad. Nat. Sci., III, 



1824, 273 ; ibid. II, 101. 



r.roader and more robust than incUyi. Head, thorax and under sur- 

 face fuscous; elytra and legs pale brown, the latter often tinged with fus- 

 cous. Thorax with median line usually obsolete or visible only on basal 

 half. Otherwise as in niclli/i. Length S-10 mm. 



Throughout the State, frequent in the northern counties; much 

 less so southward. June 12-August 6. Occurs with the preceding 

 on foliage near water. Listed as badiipcniiis Lee. It is my opinion 

 that indlyi will be found to be only a narrower, darker form of this 

 species, those examples of niclli/i with slightly paler elytra forming 

 the mtergTades. Say's name is the older of the two. 



Tribe II. PEDILINI. 



Very neat, oblong or elongate black (rarely brown) beetles hav- 

 ing the thorax usually yellow, subglobose and polished; mandibles 

 truncate; antennas (in our species) slender and subserrate; maxil- 

 lary palpi feebly dilated; next to last joint of tarsi bilobed. The 

 males have six distinct ventral segments and often have the tips of 

 elytra impressed and polished. 



The tribe is represented by the single genus Corphyra Say. 

 Casey has substituted for this the old name Pcdilus, but Horn has 

 given (Trans. Ill, 278) good reasons why Say's name should stand, 

 so it is here retained. 



ITI. CORPHYRA Say. 1835. 



Horn in his latest paper on Corplii/ra (loc, cit.) lists 20 species 

 as belonging to the North American fauna. Dury has shown* that 

 a. number of these are very closely related and probably synonym- 

 ous. The thorax in all species is elliptical Avith all the angles 

 rounded ; in the wholly black species it is somewhat wider and less 

 convex than in the others. Eight of the 20 forms have been taken 

 in the State, while another may occur. 



KEY TO INDIANA SPECIES OF CORPHYRA. 



(i. Thorax with a distinct impressed median line; elytra of males simply 

 tipped with yellow, not impressed. 2400. CANAI.TCULATA. 



*Journ. Cincin. Soc. Nat. Hist., XX, 17?. 



