20 PROCEEDINGS OF THE ACADEMY OF 



DONACIIDES. 



DoNACiA, Fabr. 



I. AntPror tibiae simple, form elongate subtriangular, elytra truncate at the 

 apex, upper surface flattened, femora often elongate, dentate. 



Aa. 3d joint of antenna; much longer than the second legs more or 

 less pale. 

 Ba. Head, thorax, and scutellum pubescent. 



Ca. Elytra rounded, femora simple, elytral interstices punetu- 



late. ptibicollis. 



Cb. Elytra subtruncate, % femora unideutate. Harrisii. 

 Bb. Above glabrous. 



Ca. Thorax scarcely punctulate. 



Da. % posterior femora, 2-3-dentate, tibiae serrate. 



lucida. 

 Bb. % posterior femora, 1-dentate, tibiae simple. 

 Ea. 9 p()sterior femora dentate. 



Fa. Thorax with the anterior callus obsolete. 

 6a. Elytra transversely regulose, % anterior 



tarsi dilated. palmata. 



Gb. Elytra smooth. 



Ha. Elytra striate punctate, interstices 



convex. hypoleuca. 



Hb. Elytra seriate punctate. tcxana. 

 Fb. Callus well marked, 9 ^^'it'i Ifist segment 

 produced. piscntrix. 



Eb. 9 posterior femora simple, form of next section. 



tuberculata. 

 Cb. Thorax closely punctulate, subrugulose. poroskollin. 

 Ab. 3d joint of antenna? not, or hardly, longer than 2d, legs aeneous. 

 Ba. Thorax and head pubescent. hirticollia. 



Bb. Glabrous. 



Ca. Posterior femora 2-3-dentate, tibia" serrate. 

 Ba. Thorax quadrate, antennal joints equal. 



magnifica, 

 Bb. Tliorax elongate, 3d joint visibly longer than 2d. 



proxima. 

 Cb. Posterior femora sliorter, 1-dentate. 



Ba. Thorax with distinct callus, % pygidium emarginate. 



distincta. 

 Bb. Thorax closely punctate (tibiae sometimes pale). 



subtilis. 

 II. Elytra subtruncate or rounded, convex, parallel ; antennae short ; legs 

 short, tiiick ; anterior tibiae with the apex produced into a tooth. 



(Phiteumaris Th.) 



