84 COLEOPTERA. 



XanthoUnus tricolor, Fab. (1787), is allowed to be valid, 

 M. Brisout's name will apparently have to be adopted for 

 our common insect. 



110. Stenus incanus, Er., Col. March.; Gen, et Spec. 



Staph., 700 ; Kr., Ins. Deutschl,, iii, 758 ; D. Sharp, 



Ent. Mo. Mag., v, 197. 

 Dr. Sharp records the capture of a ievf specimens of this 

 insect on the banks of the Nith, at Thornhill, Dumfries. It 

 belongs to the group of black-legged species with simple 

 tarsi, and is allied to morio, atratvlus and cinerascens; but 

 is narrower than all of them, more distinctly plumbeous- 

 grey in colour, and more clothed with whitish pubescence, 

 with the forehead broadly and deeply bisulcate, the interstice 

 being decidedly convex, as high as the outer sides of the 

 furrows, and the elytra longer than the thorax, finely punc- 

 tured, with level interstices, and the abdomen sparingly and 

 finely punctured. 



111. Stenus assimilis, (Kirby) Steph., Illust. Mand., v, 



287; Man. 415; E. C. Rye, 1. c, v, 249. 



112. Stenus sulcicollis, (Kirby) Steph., 1. c, 295 ; Man. 



414; E. C. Rye, I.e. 

 This and the preceding are given as valid species in Gemm. 

 & v. Harold's Cat., ii, though (? because) they are not re- 

 cognizable or known to British Entomologists. The former 

 is represented by hrunnipes, and the latter by melanopus, in 

 Stephens' collection. See Wat. & Janson (Trans. Ent. Soc, 

 iii, N. S., p. V, xvi, 1855), from whose account of the con- 

 fusion with regard to these insects it is evidently impossible 

 to do anything but ignore them altogether. 



