04 SAT.MONID^. 



b. Salmo fario ausonii. 



Synomfmy of German specimens. 



Forelle. 



Trutta fluviatilis, Gesner, p. 1203. 



Salmo no. 367, Gronov. Zooj)hyl. p. 120 ; no. 370, p. 121 (young). 



Trutta no. 9, Klein, Pise. Miss. v. p. 19, tab. 1. fig. 3. 



Salmo fario, Block, i. p. 148, taf. 22, & p. 157, taf. 23; Schrank, 



Faun. Boic. i. p. 320 ; Meidinger, pi. 20 ; Agasi> Poiss. cCeau douce, 



pi. 3-5 ; Gunth. Fische des Neckars, p. 113. 

 Salmo alpinus, Block, iii. p. 158, taf. 104. 



saxatilis, Sckrank, Faun. Boic. i, p. 320. 



Salar ausonii, Heckel, Sitzgsber. Acad. Wiss, Wien, 1852, viii. p. 354, 



taf. 8 ; Heckel i^ Kner, Siisswasserf. p. 248. 

 Trutta fario, Siebold, Siisswasserf. p. 319. 

 Anatomy : Agass, & Vogt,^ Mem. Soc. Sc. Nat. Neuchatel, iii. ; Kner, 



Sitzgsber. Acad. Wiss. Wien, 1851, vi. p. 243, & 1852, \iii. p. 204. 



RtLSsian specimens. 

 Salmo fario. Pall. Zoogr. Ross.- As. iii. p. 348. 



British specimens. 



The Common River-Trout. 



Trutta fluviatilis, Willugkhy, p. 199 (p. 193, two varieties are men- 

 tioned by Jobnson, but in very indistinct terms). 



Trout, Borlase, Cornwall, p. 203, t. 2(5. f. 1 ; Pamant, Brit. Zool. iii. 

 p. 260, pi. 59, & edit. 1812, iii. p. 399, pi. 70. 



Salmo fario, Turt. Brit. Faun. p. 103 ; Donov. Brit. Fish. iv. pi. 85 ; 

 Flein. Brit. Anim. p. 181 ; Rickards. Faun. Bor.-Amer. Pise. p. 

 144, pi. 92. fig. 3 A & B ; Jemjns, Man. p. 424 ; Yarr. Brit. Fish. 

 2nd edit. ii. p. 85, & 3rd edit, i. p. 261. 



Salmo comubiensis, TF'aZ6. Artedi, iii. p. 05; Bl. Schn. p. 421. 



French specimens. 



Salar Gallorum Trutta, Bellm. p. 280. 



Trutta fluviatilis. Rondel, ii. p. 169. 



Salmo fario, Selys-Longckamps, Faune Beige, p. 221. 



Salar ausonii, Cxiv. Sf Val. xxi. p. 319, pi. 618. 



D. 13 (-14). A. 10-11. P. 13. V. 9. L. lat. 120. L. transv. 

 26/30. Cffic. pyl. 38-47 (-51). Vert. 57*, 58. 



Attaining to a length of thirty inches ; female mature at a length 

 of eight inches. 



Head well proportioned in its shape ; body rather stout. The 

 posterior point of junction of operculum and suboperculum is mid- 

 way between the upper end of the gill-opening and the lower anterior 

 angle of the suboperculum. Proeoperculum with a not very indistinct 

 but very obHque lower limb. Snout rather produced in the male ; 

 the lower jaw having a hook in front in very old examples only. 

 "Nfaxillary much longer than the snoiit, v^ry strong and dilated (see 

 p. 6) ; it extends to below the hinder margin of the oi'bit already 

 in specimens of eight or nine inches in length. Dentition strong. 

 The head of the vomer is triangular, much broader than long, with 

 * Fifty-six, if the last rudimentary c.iudal verlebra be not counted. 



