The trophi of Cleonymus are so very similar to those of Colax, 

 that we should not have established the latter genus had not 

 other characters presented themselves : it is true that the man- 

 dibles of the former are stronger and have but two distinct 

 teeth, and the terminal joint of the maxillary palpi is shorter 

 and more dilated; but on comparing the males of the two 

 genera, more decided characters will be found to distinguish 

 them, and such we trust as will fully justify their separation. 

 The males of Colax are marked by a very large head, a ring- 

 shaped prothorax, an obovate abdomen and slender thighs ; 

 the same sex of Cleonymus has a moderately-sized head, a bi- 

 lobed prothorax, an obconic and thick abdomen, and robust 

 anterior and incrassated posterior thighs. We regret that the 

 want of female specimens has prevented us from perfecting 

 our specific descriptions, as well as from entering into a 

 further investigation of that sex, than to observe that the ab- 

 domen is longer, more depressed and less compressed and an- 

 gulated beneath than in the genus Colax, and that the female 

 antennae (at least in the specimens before us) are thickened 

 gradually to the apex ; they have not the ring-shaped third 

 joint which that genus has, nor do the three last joints form a 

 distinct mass. 



So completely have these insects been neglected, that very 

 few species of Cleonymi have been described, and only one 

 that I can find figured. It is most likely that the genus is 

 very extensive ; but my own cabinet contains only seven 

 species, all of which are females, excepting the one figured in 

 our Plate. 



1. C. depressus Fah. — Coq. Illus. Ins. tab. B.f. 5. 



2. maculipennis Nob. 



For specimens of this beautiful insect, which appears to 

 be a nondescript, I have to acknowledge my obligations to 

 A. Cooper, Esq., who took four males the latter end of June, 

 on the trunk of a decayed Elm near Knight's Hill Cottage, 

 Dulwich. 



The plant is a tetrandrous variety of Euonymiis europtsus 

 (Spindle-tree). 



