46 Descriptions of New 



half of the elytra, the basal angles are acuminated and slightly 

 envelope the shoulders, the posterior margin is prolonged in 

 the middle, towards the scutellum the fovea? or basal impres- 

 sions are 2, and rather distant from each other. Scutellum 

 obsolete. Elytra with 2 depressions at the base. Tibiae 

 straight; tarsi with joints 1-4 subequal or very nearly so. 

 Mesosternal carina middling. 



No. IV. 



Note on Cyclosomus ftexuosus. Fab. 



(This insect was erroneously described by me in the first edition of 

 these papers. However, I retain part of my description, as it notices 

 some peculiarities of the insect, of which I find no mention made in any 

 of the works within my reach. It was owing to these peculiarities, 

 and Lacordaire's statement that the three known species were of 

 yellowish and green colour, as well as to having no detailed description 

 of the C. flex., that I described it as new.) 



To judge from what Lacordaire says of this g. in his g. 

 des Col. (a work upon which, as I have said elsewhere, I look 

 as containing the essence of all former researches), it would 

 appear that the present species differs very materially from 

 the three others hitherto described, namely in the flatness 

 of the antennal joints, in the serrated edges of the tibial 

 spurs, in the existence of the tarsal brushes in the male, and 

 in the color — to say nothing of some other minor distinctions. 

 The three first of these peculiarities (too important not to 

 have been noticed by Lacordaire or any other describer of 

 the g. had they been aware of them) add considerably to the 

 characteristics which already constitute this g. one of the 

 most remarkable of the extensive family of the Carabida?. 



The antenna? are strong, stiff and short, reaching hardly 

 beyond the base of the thorax: joint 1 is of middling size, 



