COLKOPTERA. 1^1 



Here, the body is cylindrical, and the thorax as wide as the abdo- 

 men throughout. 



Crvi'tocephalus, Geoff. 

 Where the antennne and jtalpi are the same thickness everywhere. 

 C. sericeas ; Chnjsomda sericca, L. ; Oliv., Col., VI, 96, i, 5. 

 Three lines in length, and of a golden green ; antennae black, 

 with a green base. Very common on the semiflosculosae*. 



Choragus, Kirb. 



Where the antennae are terminated by three thicker joints forming 

 a club, and the palpi are attenuated at the extremity f. 



There, the body is narrowed anteriorly and is almost ovoid. 



The five last joints of the antennae are frequently larger, more or 

 less compressed, and more or less dihted and serrated. The max- 

 illary palpi are thicker at their extremity or almost terminated by an 

 ovoid club, formed either by the last joint, or by that and the preced- 

 ing one, 



EuRYOPE, Dalm. 



Where the mandibles are very strong, and where the second joint 

 of the antennae is manifestly longer than the third |. 



EuMOLPUs, Klilg. Fab. 

 Where the mandibles are of the ordinary size, and the second joint 

 of the antennae is shorter than the following one. 



E. vilis. Fab.; Panz., Faun. Insect. Germ., LXXXIX, 12. 

 Black, pubescent ; elytra, base of the antennae, and the legs red- 

 dish-brown; very injurious to the Vine. 

 This subgenus, thruugh the Colaspes, and by an almost insensible 

 transition, is connected with the genus 



Chrysomela, 

 When the body is usually ovoid or nearly oval, and the head salient, 

 projecting, or simply inclined ; where the antennae are simple, about 

 half the length of the body, and most frequently granose and insensi- 

 bly enlarged towards the extremity. 



Some, in which the body is always ovoid or oval and provided with 

 wings, and the palpi terminate in a point, approach the Eumolpi, and 

 are distinguished from the other following Chrysomelinae by their 

 filiform antennae, Avhich are longer than the half of the body, and 

 consist of elongated and almost cylindrical joints, the eleventh or last 

 of which is terminated by an appendix or false joint, the length of 

 which is almost, eq\ial to that of the half of the preceding portion of 

 that joint. Such are 



CoLAspis, Fab., 

 Where there is no sternal projection §. 



* For the other species, see Olivier, Fabricius, and Schoenherr. 

 •f- Choragus Schepjjardi, Kirb., Lin. Trans., XII, xxii, 14. 

 J Dalm., Ephem. Entom., I, p. 17. The jE. rubra, Lat., Gener. Crust, et I 

 I, ii, 6, is from Senegal and Abyssinia. 



§ See Fabricius, Olivier, Schoenherr and Germar. 



