THE SHOKT-WIXOEB SiAVENGEI! BEETLT;>. 415 



Tlu' following papeiN treat of the North American species of the 

 subfamily • 



LiConte. — "Synoptic Tables of Lrithrobium. Stilicus and 

 Suiiiiis/' in Trars. Amer. Ent. Soc, VIII. ISm), 17-^lSO. 



LeCoute. — ''Synoptic Tables of Criiptubi'nii. I'lcderus and Pala- 

 minus." in Proc. Amer. Phil. Soc. XVII. 1S78. 390-397. 



Hon). — '"A Stiidy of the Species of Crj-ptohium of Xorth Amer- 

 ica." in Trans. Amer. Entom. Sue. XII. 1SS4. ^5-106. 



Casey. — "A Revision of the American P;pderini.'" in Trans. 

 Acad. Sci. St. L.. XV. 190.5. 17-24^. 



As above defined, the subfamily is represented in Indiana by 

 two tribes : 



KEY TO I>>'DI.\:^A TRIBES OF P.EDERI>v.i;. 



'/. Last joint of maxillary palpi very small, awl-shaped. 



Tribe I. P^deei>;i. p. 41.5. 

 aa. Last joint of maxillary palpi as larue as the third, obliquely hatchet- 

 shaped. Tribe II. Pixophlej^vi. p. 440. 



Tribe I. P.TCDERIXI. 



This tribe as above limited is compi'sed of a large number of 

 genera, the following of which are kno-mi to occtir in Indiana : 



KEY TO IXDIAX-i GEXEE.\ OF PJEPKRIXt. 



a. Fourth joint of hind tarsi not lobed beneath. 



6. Antennte elbowed at the end of the long luisal joint: front tarsi not 



dilated. 



V. Mandibles each with three teeth nu the inner side; males with last 



ventral not notched, the scconil and third ventrals each with a 



fold or pit at middle. XLIII. C'RYPTOBHir. 



cc. Mandibles each with twu teeth : males with the last ventral 



notched, the second and third without folds or pits. 



XLIV. Hespebobium. 



hh. Antemiie straight or nearly so. the basal jciuts not greatly elongated. 



d. Prostemum shortened between and under the front eox;i?. ending 



in an acute point which does not reach the mesosternum. 



c. Labrum bilobed : sculpture never very dense, the surface more 



or less shining ; front tarsi strongly dilated in both sexes : 



ligula bilobed at tip. XLV. I^iTHBOBiijr. 



ec. Labrum with a distinct median tooth: sculpture very dense, the 



surface suliopaque; front tarsi variable; ligula with a dense 



fringe of hairs at tip. 



f. Front tarsi moderatel.v dilated, densely iiadded lieiieaTh: first 



joint of hind tai-^i one-hall' louirer than second: leiiLftli 



t;..') mm. XLYI. Adeboch.^bis. 



ff. Front tarsi not dilated; first joint of hind tarsi only slightly 



longer than sei-imd : length .S.7 mm. Ltthochaeis. 



[27— -^3402] 



