THE LEAF BEETLES. 



2200 (6958c). Disonycha mellicollis Say, Bost. Journ. Nat. Hist.. I, L835, 

 199 ; ibid. II, G6S. 



Resembles closely the preceding. Differs by having the head blue-black 

 and coarsely punctured between tiie eyes, the front yellow ; femora entirely 

 yellow; abdomen piceous at middle, with the apical segment and wide side 

 margins yellowish. The elytra are sometimes nearly black, mere often with 

 a distinct bluish tinge. Length 4.5-5 mm. 



Vigo, Marion, Perry and Posey counties, scarce; probably 

 throughout the southern half of State. February 8-November 17. 

 Hibernates beneath logs in low, moist places. 



*2201 (695Sa). Disonycha cotxata Fabr., Syst. Eleut, I, 1801, 463. 



Oblong-oval, subdepressed. Vertex and occiput black with faint green- 

 ish tinge, front yellow ; thorax yellow above and beneath, without spots; 

 elytra blue-green, shining; metasternum black; abdomen piceous, the last 

 segment and the sides broadly yellowish ; femora pale yellow, tibia? at tips 

 and tarsi piceous. Thorax and elytra very finely alutaceous, the former 

 minutely and sparsely punctate; the latter with tine, distinct, sparsely 

 placed punctures. Length 4-4.5 mm. 



Fulton, Vigo and Posey counties; scarce. February 6-July 31. 

 Hibernates with the preceding, which it closely resembles. Distin- 

 guished by its smaller size, more elongate form and more distinctly 

 punctured elytra. 



LIII. Longitarsus Latr. 1829. (NL., " long + tarsus. ") 



This and the three succeeding genera belong to a group, Aph- 

 thonce of the Iiattieini, having the form oval; antenna? 11- jointed; 

 front coxal cavities open behind; thorax without trace of basal im- 

 pressions; hind tibia- grooved, at least near the apex, and ter- 

 minated by a rather long spur; hind tarsi with last joint not in- 

 flated, the claws simple. The members of the genus Longitarsus are 

 very small oval or oblong convex species, usually uniform dull yel- 

 low, brownish or piceous in hue, with the elytral punctures much 

 confused; tarsi slender, the first joint of the hind pair nearly or 

 fully half the length of tibiae and as long as all the following joints 

 united. The following species have been taken in the State : 



KEY TO INDIANA SPECIES OF LONGITARSUS. 



a. Antennas with joints 2, 3 and 4 successively longer ; inner wings always 

 present. 



0. Reddish-yellow, shining; thorax very plainly broader than long; punc- 

 tuation distinct. 2202. subruffs. 



