184 INSECTA, 



lines; oval, oblong', and blue ; elytra fulvous or red, and the inner 

 angle of their extremity marked with a black dot. On the Wil- 

 low and Poplar ; its larvze lives on the same trees, and frequently 

 in society. 



This species, 'and some others equally oblong, with a thorax 

 narrower than the elytra, and forming a transversal square 

 thickened on the sides, constitute the genus Lima of Megerle *. 



We will terminate this tribe with those Chrysomelinse whose max- 

 illary palpi are attenuated at the extremity and terminated in a point. 

 They will form two subgenera. 



Ph^don, — CoLA-PHus, Meg., 



Where the body is ovoid or orbicular f , and 



Prasocuris, Lat. — Helodes, Fah., 



Where the body is narrower, more elongated, and almost a parallelo- 

 piped, and where the diameters of the thorax are nearly equal. The 

 four or five last joints of the antenna? are dilated, and almost form a 

 club|. 



In the third and last tribe of the Cyclica, that of the Galerucit^, 

 we find antennae always at least as long as the half of the body, 

 of equal thickness throughout, or insensibly thicker toAvards their 

 extremity, inserted between the eyes, at but little distance from the 

 mouth, and usually approximated at base, and near a small longitu- 

 dinal carina. The maxillary palpi, thickest about the middle, termi- 

 nate in two joints, in the form of a cone, but opposed or united at 

 base, the last short, and either truncated, or obtuse or pointed. The 

 body is sometimes ovoid or oval, and sometimes almost hemispherical. 

 In several, and particularly the smaller species, the posterior thighs 

 are very stout, which enables them to leap. 



This tribe is composed of the genus 



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 E\irope, in which the penultimate joint of 

 the maxillary palpi is dilated, and the last much shorter and trun- 

 cated, form the genus 



* See the Catalogue, 8:c., of Dahl. 



t See the Catalogue of Dahl, hut add to it certain Chrysomelae, such as the fol- 

 lowing : raphani, vitellince, polygoni, &c. The antennae of the species called armo- 

 racice, cochkaria, in the thickening of their terminal extremity, closely approach 

 those of the Helodes. 



+ See Lat., Gener. Crust, et Insect., Ill, p. 57, Fabricius, Olivier, Schcenherr, 

 and Gyllenhall. To the species quoted, add the aueta, marginella, hannoverana. 



