CIIRYSOMELIDiE. 353 



1. Antonnre with 3d joint longer tlian 4th ; elytra uniformly punctured. 



Longitarsus. 

 AntoniiaB with .3d joint equal to 4tli ; elytra striato-jjuuctati!. 



Glyptina. 



3. Hiud tibiiE depressed at the tij), with tlie groove bifurcate, spur at tlic 



outer angle. Apthona. 



Hind tibiae not depressed at the tip, groove feeble, entire, spur at tlu; 



inner angle. Phyllotreta. 



Very few of the species are described : Glyptina (unnecessarily 

 united by Crotch with Balophila) occurs in Kansas, Texas, Colo- 

 rado, and New Mexico; the other genera are found on both sides 

 of the continent. 



Group IX. — Arsipodes. 



This group consists of small species, which differ, from the 

 Aphthonse chiefly by the closed front coxal cavities, the stouter 

 form, and the shorter hind legs; the claws are appendicnlate. 

 The species in our fauna arc not numerous, and may be assigned 

 into genera as follows: — 



Klytra deeply pimctato-striate ; j^rothorax with basal plicse. Mantura. 



Elytra uniformly punctured or feebly punctato-striate ; protliorax without 



impressions. Podagrica. 



The genera seem to be represented by species only in the 

 Atlantic region. Mantura is a transitional form leading to the 

 (!!repidoder£fi ; the front coxal cavities are nearly, but not com- 

 pletely closed behind. 



Group X.-^Mniophilae. 



These are small broadly rounded species, bearing a deceptive 

 resemblance to Scirtes or Exochomus. The antennos are very 

 near together, and the front strongly defiexed. The front coxal 

 cavities are open; the mesosternum is transverse and concealed 

 in great part. The hind thighs are very much tliickencd, the 

 spur of the hind tibiae is acute; the hind tarsi short, with the 

 1st joint not elongated, and the claws ap])endiculate. The tarsi 

 are not inserted at the end of the tibite as in the preceding tribes, 

 l)nt at the upper part of a short oblique emargination or trunca- 

 tion. Two genera occur in our fauna, each represented by one- 

 species in the Southern States. 



Front defiexed. Sphaeroderma. 



Front still more convex, inllexed, Argopistes. 



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