ORDER COLEOPTERA. 2il 



The following species is ranged by M. le Comte Dejean, 

 with his tachypus — 



Ciclndela, Jiavipes. Lin. Panz. Faun. Insect. Germ. 



pressed, at least as long as broad, much more narrow behind than in 

 front, a truncated heart, with the posterior angles very short, or but 

 little elongated. 



Those in which this part of the body presents at the posterior angles 

 no very marked impression, and whose eyes are very large, and cause the 

 head to appear broader than the corslet, form the genus Tachypus, of M. 

 Megerle. 



Those whose eyes, as well as in all the following, have less projection, 

 so that the corslet is not broader than the head, but otherwise exhibits 

 the same characters, are the Bemhidium proper, of M. le Comte Dejean. 



With M. Megerle he ranges, in the genus Lopha, those whose corslet, 

 having the same form and the same proportions, presents at each posterior 

 angle a very well marked impression, so that these angles are well bor- 

 dered. 



The other Bembidia have the body more flatted, the corslet more broad 

 than long, and proportionally less narrowed posteriorly. Its posterior 

 angles have always a strong impression, and a small oblique keel. 



Some species whose corslet, though narrowed near the posterior angles, 

 is nevertheless less so than in the others, so that the posterior edge is but 

 little more narrow than the anterior, compose the genus Notaphus of the 

 same, and of M. Megerle. 



Among those whose corslet is notably narrowed behind — sometimes its 

 length is only a little greater than its breadth, and it is in the form of a 

 truncated heart— such are the Peryphus of these naturalists. Sometimes, 

 much shorter proportionally, its form approximates to that of a cup, or a 

 heart, much widened ; in some it is even rounded at the posterior angles. 

 These species constitute, with them, the genus Leja. The tachypus, in 

 consequence of the extraordinary projection of their eyes, of their other 

 relations with the Elaphri, are tolerably distinct. But it is not so with 

 the other genera. It is impossible to determine them by rigorous cha- 

 racters. Those which may be drawn from the respective and comparative 

 lengths of the second and third articulations of the antennae still appear 

 to me uncertain. See the Catalogue of the Collection of Coleoptera of 

 M. Dejean. 



VOL. XTV. K. 



