fi90 FAMILY XXXV. DASCVLLIDiE. 



Avchytarsus hicolor JMelsli., oblong-oval, piceoiis, femora paler, 

 length 5-6 mm., ranges from New York to Georgia. 



Subfamily II. HELODINAE. 



Species less than 6 mm. in length, ocfurring on plants near 

 water. The following genera are probably represented in the 

 State : 



KEY TO INDIANA GENERA OF HELODINAE. 



a. Tai-sl with the fourth joint very small, the third lobed beneath ; form 

 more elongate; antennal joints of male with an articulated appen- 

 dage. II. PTII.0DACTYLA. 



(/(/. Tarsi with the fourth joint as large or larger than the third; form 

 usually oval or hemispherical. 

 6. Hind coxse very large ; form elongate-oval. III. Buoinetus. 



hh. Hind coxfe at most dilated on the inner side. 



c. Front narrowed by the insertion of the antennre ; prosternum dis- 

 tinct before and between the front coxae. 

 '/. Tarsi slender, fourth joint smaller than third and not prolonged 

 beneath the fifth. IV. Ectopkia. 



M. Tarsi slightly dilated, joints 'l-W-i feebly emarginate, the fourth 

 slightl,\' prolonged beneath the fifth. ' Dickanopselaphus. 

 (X-. Front moderately broad ; prosternum very short before and very 

 narrow between the coxfe. 

 c. Third joint of labial palpi arising from the side of the second. 

 f. Hind femora normal; tibial spurs moderate; hind tarsi flat 

 above and blinrinate; coha' usually variegated. 

 g. First joint of antennaj expanded. V. I'iii(.i.\ocYi>iiox. 



(jfj. First joint of autennaj not expanded. 



li. Hind tarsi convex above, not eariiiale, third joint nor- 

 mally visible; color brownish-yellow. .A[icrocaka. 

 /(/(. Iliiiil tarsi flat and bicarinate above, third joint in great 

 part concealed by the prolonged upper «Tge of the sec- 

 ond joint. VI. Helodes. 

 ff. Hind femora broad, lilted for jumping; spurs of hind tibia' 

 long; color usually dull, uniform. VII. Scirtes. 

 cc. Third joint of labial palpi arising from the end of the second; 

 tarsi convex aliove, not carinatc; color usually dull. 



VIII. Cyphon. 



II. Ptilodactyla Latr. 1,S20. (Gr., "wing -i- toed.") 



Head defie.xed and partially concealed from above hy the thorax; 

 antenna; of female simple, those of male with joints 4 to 10 each 

 furnished with a slender, articulated cylindrical appendage arising 

 from the base and as long as the joint itself; prosternum narrowly 



