THE MELANDRYID BAEK BEETLES. 12^'^ 



Kosciusko and Putnam counties ; rare. jMareh 20-June 22. 

 Sifted from dead leaves in low moist places. Eanges from Pennsyl- 

 vania to Louisiana. 



Jlicroscapha clavicornis Lee, oval, convex, black, shining, head, 

 base of antenna} and front legs paler, length 2.8 mm., was described 

 from Illinois and Georgia. 



Trilio VI. .MELANDltYINI. 



The genera com prising this tribe, as at present limited, agree in 

 having the next to last ji:)iut of at least the front and middle tarsi 

 excavate beneath, emarginate and lobed; front tarsi of males di- 

 luted ; front coxa? contiguous ; tarsal claws simple ; thorax as wide at 

 base as ehtra ; head not constricted behind. 



Representatives of the following genera are known to occur or 

 probably occur \vithin the State : 



KEY TO INDIAN.^ GEXEE.A. I)F MELAKDBYINI. 



If. Fruiit coxal cavities with an outer fissure or cleft. 



li. Frootal suture (.between front and clypeus) distinct; trochantins of 

 front coxae distinct ; lengtli 7 or more mm. 

 e. Elytra deeply striate ; thorax with three grooves on basal half. 



X. Melaxdrta. 

 ec. Elytra punctured, not at all .striate ; joints 2 and 3 of anteimse to- 

 gether not longer than joint 4. XI. Emuiesa. 

 hh. Frontal suture and trochantius of front coxa; not visible. 



d. Jllddle coxoe contiguous; antenuiB slender; fourth joint of maxil- 

 lary palpi large, hatchet-shaped. Xylita. 

 (Id. Jliddle coxie separated Ij.v the mesosternum. 



v. JIaxillary paipi with fourth joint wider than the second and 

 third ; pubescence prostrate. 

 /. AuteunsE thick, outer joints wider than long ; last joint of max- 

 illary palpi hatchet-shaped. Caeebaba. 

 ff. Antenna; slender ; last joint of maxillary palpi elongate, cultri- 

 form or shaped like a pruning knife ; length less than 4 mm. 



XII. Spilott's. 

 (T. Maxillary palpi with fourth joint not wider than second and 

 third. 

 {I. JIaxillary palpi not serrate or serriform, the fourth joint elon- 

 gate ; color uniform brown; length more than 11 mm. 



XIII. Enchodes. 

 gg. Maxillary palpi more or less serrate or serriform, the last joint 

 elongate, cultriform ; thora.x elongate, its side margins ef- 

 faced in front, obsolete behind. Mystaxts. 

 aa Front coxal cavities entirely closed on the outer side, i. e., without an 

 outer fissure or cleft. 

 (/. ;\I:ixillary palpi with last joint cultriform or pruning-knife shaped; 

 length <> or more mm. XIV. Phlceotrya. 

 I SL'— 2:1402 1 



