The Scottish Naturalist. 



2. Legs reddish. Th. tr. E. p.-s. 

 on sides and near ap. 2% 1. 



The punc. str. obs. 

 "R c. t 



Very like prec. Th. narrower behind. E. much more 

 el. and parallel. The punc. str. hardly fainter at 

 sides, and not at all fainter near ap. Tar. shorter 

 and thicker than in prec. 3 1. E. c - 



Trechus. 



1. E. pub. ...... 



- not pub. ...... 



2. R. Legs paler. H. dusky. A dist. band near ap. of 



e. b. An. nearly as long as whole body. Ba. 

 angs. of th. ac. E. p.-s. Ints. smooth. 2% 1. E. 



• -. - -. Disc of e. often dusky. An. not more 

 than 3^ length of whole body. Th. rectang. 

 at ba. E. faintly p. -s. ; ints. punc. 2 1. B. 



3. Ba. angs. of th. well def., though sometimes obt. 



- - - - rounded off. R. An. and legs paler. E. short, 

 with rounded sides. 1st str. very deep, reaching 

 ap., punc. in fr., bent round at ap. to include 2d, 

 3d, and 4th str, which are fainter, but strongly 

 punc. 5th str. faint, if 1. B. 



4. E. with rounded sides. .... 



- very long and parallel. Pale brown. H. darker. 



An. long. Th. rectang. at ba. 1st, 2d, and 3d 

 str. of e. deep, but faintly punc. Ap. of 1st str. 

 bent round to include 2d. The 4th str. faint, if 

 1 B c - 



5. Str. of e. rather strongly punc. Th. rectang. at ba. 



hardly punc, and faint. .... 



; the 3 in. ones very deep, — the 4th faint. 



Pit. or r. An. r. ; 2nd, 3d and 4th js. darker. 

 Legs test. Th. rectang. at ba. 2 1. E. F - 



6. Str. of e. all well def. , the 4 in. ones very deep. R. 



An. pal. and legs paler. E. short, with strongly 

 rounded sides. 2j^ 1. E. S. I. - 

 Out. str. obs. ; the 3 in. ones only rather deep. Pit. r. 

 Pal., an., legs, and (often) ap. of e. paler. E. 

 longer and more parallel than in prec. 2 l /z 1. B. 



7. Pit r. Pal. , an. and legs pale. Ba. angs. of th. dist. 

 E. finely str., the in. 4 str. well def. l}£ L 



obt. 



-L>» • •••••• 



Very like prec. Rather darker. Ba. angs. of th. 

 almost rounded. E. shorter, more faintly str. Not 

 more than in. 3 str. well def. i 2 /$ 1. E. S. I. 



Aepus 

 Th. rectang. at ba. Pale r. 1 1. B. c - 



167 



chalceus 



littoralis 



2 

 3 



discus 



micros 

 4 



secalis 

 5 



longicomis 

 6 

 7 



rivularis 



lapidosus 



rubens 



minutus 



obtusus 



marmus 



