560 INSECT A. 



Galeruca, 



Which we will divide into two principal sections; those which are 

 destitute of the power of leaping or the Isopoda, and the Jumpers 

 or the Anisopoda. 



Some species foreign to Europe, in which the penultimate joint 

 of the maxillary palpi is dilated, and the last much shorter and 

 truncated, form the genus 



Adorium, Fab. Oides, Web.(l) 



Those, in which the two last joints of the maxillary palpi differ 

 but little as to size, and in which the antennse, composed of cylin- 

 drical joints, are at least as long as the body, have been distinguished 

 by the generic name of 



Luperus, Geoff. (2) 



The others, which, with similarly terminated palpi, have shorter 

 antennae composed of obconical joints, form the true Gallerucae or 

 the 



Galeruca, Geoff. 



Such are the 



G. calmariensis; Chrysomela calmariensis, L.; Oliv., Col., VI, 

 93, iii, 37. Three lines in length; yellowish or greenish above; 

 three black spots on the thorax; another with a stripe of the 

 same colour on each elytron. This species, together with its 

 larva, is found on the Elm; in certain seasons when unusually 

 abundant, it strips these trees of their foliage, and does as much 

 mischief as certain caterpillars. 



G. tanaceti; Chrysomela tanaceti, L. ; Oliv., lb., I, 1. Oval, 

 oblong, very black and but slightly glossy; elytra deeply punc- 

 tured and without striae. On Tansy(3). 

 The jumping Galerucitae, or those whose posterior thighs are inflated 

 and which are distributed by Fabricius among the genera Chrysomela, 

 Galeruca and Crioceris, are united in one, that of Jlltica or Haltica, 

 in the systems of Geoffroy, Olivier and Illiger. These Insects are 



(1) Web., Observ. Entom. ; Lat, Gen. Crust, et Insect., Ill, p. 60, and I, xi, 

 9; Oliv., Col., V, 92, bis; Schoenh., lb., II, p. 230; Fab., Syst. Eleut. 



(2) Oliv., Col. IV, 75, bis; Schoenh., lb., p. 292, 294; Germ., Insect. Spec. Nov., 

 p. 598. 



(3) See Oliv., Col., lb. 



