THE LAMKLI.K'OIIX BKKTLKS. 981 



The following papers embrace the principal literature treating 

 of the North American genera : 



/font. "Notes on the Species of Anomala inhabiting the United 



States," in Trans. Amer. Ent. Soc., XT, 1884, 157-164. 

 Horn. 'Table of Species of the Genus Cotalpa," in Trans. 



Amer. Kntom. SOP., Ill, 1871, 33S. 

 \y>rM>nn. If. F. "The North American Species of Cotalpa," in 



Journ. N. Y. Entom. Soc., XIII, 1005, 1-4. 

 Bchceffer, CJias. "Notes on some Species of the Genns Anomala 



with Descriptions of New Species," in Journ. N. Y. Entom. 



Soc., XIV, 1906, 1-5. 

 7/m/. ' New Scaraba>ida>," Inc. cit., XV, 1907, 60-75. Tables 



of the U. S. species of the genera Ai\nuila and Slri</<><l< nna 



are given on pages 69-73. 



The descriptions of the species of the other genera are scattered 

 through various publications. Five of the seven genera of the tribe 

 are represented in Indiana. 



KEY TO INDIANA GENERA OF RUTELINI. 



a. Elytra with a membranous margin: antenna? 9-jointed ; mandibles in 



repose not projecting beyond tbe clypeus. 



1>. Elytra convex, not notched at base, shallowly striate and punctate; 

 thorax not hairy. XXIV. ANOMALA. 



bit. Elytra flattened, notched at base, deeply striate, not punctate; tho- 

 rax hairy and silicate or impressed. XXV. STRIGODERMA. 

 aa. Elytra without membranous margin ; anteiiiue 10-jointed ; mandibles 



more prominent, usually visible beyond the clypeus. 



c. Thorax with marginal line at base; color yellow or brownish-yellow. 



il. Clypeus without a suture between it and the front; elytra with 



black spots. XXVI. PELIDNOTA. 



<I(L Clypeus distinctly separated from (he front: elytra without spots. 



XXVII. COTALPA. 

 cc. Thorax without a marginal line at base; color dark brown. 



XXVIII. POLY .\KECiirs. 



XXIV. AXOMALA Samouelle. 1819. (Gr., "unlike.") 



Small or medium convex forms, distinguished mainly by the 

 characters given in key. The color is extremely variable, often 

 ranging from dull yellow to black in the same species. In all but 

 one of the Indiana species the outer or larger claws of the front and 

 middle tarsi are distinctly cleft or divided for one-fourth or more of 

 their length. About 20 are recognized from the United States, 7 of 

 which have been taken in Indiana. 



