558 INSECTA. 



In the two following subgenera the same joint, also well separated 

 from the preceding one, and quite as large or larger, is more or less 

 semi-ovoid. These Insects are more abundantly disseminated 

 throughout the eastern continent, and Europe in particular. 



Timarcha, Meg. Dej. 



The Timarchse, which were formerly-placed among the Chryso- 

 melse, comprise those which are apterous. Their body is gibbous, 

 the antennae are granose, inferiorly in particular, the elytra united, 

 and the tarsi usually much dilated, at least in the males. 



These Chrysomelinse are found on the ground in the woods, on 

 grass, and along the edges of roads. Their gait is slow, and they 

 emit a yellowish or reddish humour from the articulations of their 

 legs. They are most common in the south of Europe and north of 

 Africa. 



Among those in which the thorax is narrowed posteriorly and 

 approaches to the form of a crescent, and generally the largest 

 species, is placed, 



T. laevigata; Tenebrio leevigatus, L. ; Oliv., Col., V, 91, i, 11. 

 From four to eight lines in length; black; thorax and elytra 

 smooth, but finely punctured; antennae and legs violet. 



Its larva is greenish or violet, strongly inflated, and has a 

 fulvous extremity. It feeds on the yellow Gallium, and under- 

 goes its metamorphosis in the earth(l). 



Chrysomela proper. 



This subgenus will comprise such of Olivier's species as are fur- 

 nished with wings, and in which the maxillary palpi, according to 

 our previously established subdivisions, have the last joint as large 

 as the preceding ones or larger, and in the form of a truncated, 

 ovoid, or reversed cone. Such are 



C. sanguinolenta, L.; Oliv., lb., I, 8. About four lines in 

 length; black, or bluish-black; sides of the thorax thickened and 

 punctured; elytra deeply punctured and widely emarginated ex- 

 teriorly with red. Found on the ground in fields, and along the 

 borders of roads. 



C. cerealis, L.; Oliv., lb., VII, 104. Size of the preceding; 

 cupreous-red above with longitudinal, blue streaks, three on 

 the thorax and seven on the elytra. Common in France. 



(1) Add the following species of Olivier, rugosa, scabra, latipes, coriaria, gat- 

 tingensis. See also the Catalogue, &c, of Count Dejean: but as I only distin- 

 guish the Timarchse from the Chrysomelse by the absence of wings, T am not sure 

 that all the species he mentions are in this case. 



