COLEOPTERA. 555 



Lamprosoma, Kirb. 



Where the body is almost globular, extremely convex, very smooth, 

 and the thorax very short, very broad, gradually raised and slightly 

 lobate at the middle of its posterior margin. The five last and ser- 

 rated joints of the antennae are less dilated than in the preceding 

 ones(l). 



Sometimes the antennae, evidently longer than the head and tho- 

 rax united, are simple and filiform, or thickest at the end, or even 

 terminated in a club, in which case they are serrated, but only from 

 the seventh joint. The body, in several, is ovoid and narrowed 

 before. The last joint of the antennae is appendiculated, so that 

 their number seems to amount to twelve. 



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

 men throughout. 



Cryptocephalus, Geoff. 



Where the antennae and palpi are the same thickness everywhere. 

 C. sericeus; Chrysomela sericea, 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(2). 



Choragus, Kirb. 



Where the antennae are terminated by three thicker joints form- 

 ing a club, and the palpi are attenuated at the extremity(3). 



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 dilated 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 

 preceding one. 



Euryope, Dalm. 



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

 of the antennae is manifestly longer than the third(4). 



(1) Lamprosoma bicolor f K\vh., Lin. Trans., XII, xxii, 15. See especially the 

 Insect. Spec. Nov. Germ., p. 574, 575. 



(2) For the other species, see Olivier, Fabricius, and Schcenherr. 



(3) Choragus Scheppardi, Kirb., Lin. Trans., XII, xxii, 14. 



(4) Dalm., Ephem. Entom., I, p. 17. The E. rubra, Lat., Gener. Crust, et In- 

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



