4 Sir W. Jar4ix($ p« rwe Qt liitle knomn British Fishes. 



fin^ are all bluish- white ; the tail very much forked ; the stomach 

 and intestine are very simple ; the roe is minute and abundant, of 

 a bright orange colour ; the swimming-bladder large ; the flesh 

 white, rich, and fat. The following may stand as the specific cha- 

 racters of the species : *-rr 



CoBEGQNus Maejenula, Mihi. Salmo Mar^nula, Block, 

 Gmel. 



C. argenteu8,-|- dorso brunnescente viridi, capite acuto subdiaphano, ex vi- 

 ridi brunnescente, iridibus genisque argenteis ; ore edentulo, mandibula 

 inferiore curvata, superiori angustiore ; lingua brevi, cartilaginea, den- 

 tibus minutissimis instructa ; cauda furcata. 

 Long. 4-10 pollices. 



Pinna dorsi os&iculis 12: Imo. brevi, 4to, 5to. longissimis, 12mo. bifurcata. 

 Pect. - - - 15-17. 



Vent. - - - 12-13. 

 An. ... 14. 



Caud. - circiter 30. 



Branch. - - - 9. 



Verteb. - - - 50-52. 

 Hab. lacis Europas praesertim Genevae, (Germaniae, Silesiae, Lin.) In 

 Britanniae lacubus Lochmaben, Dumfries-shire. 



• Salmo Albula, Linn, seems to be a very closely allied species ; and if the 

 " Coregonus edentulus, maxilla inferiore longiore," of Artedi, had not been quot- 

 ed to this as a synonyme by Linnaeus, who must have been acquainted with the 

 species of Artedi, I should have been inclined to have placed it with S. MarcB' 

 nula. I may add that I have scarcely ever been able to reconcile the number of 

 rays in the fins of many of our British species, particularly the Salmonidce, with 

 those of older authors, and in one of a later date our numbers are at total variance. 

 The difference in the present instance will be seen in comparing my generic cha- 

 racters with Br. 7. D. 10. P. 15. V. 11. A. 14. C. 20. of Gmelin's Salmo Ma- 

 rcsnula. My numbers were taken from an examination of several specimens, and 

 with as much exactness as possible. 



•f I here add part of the generic character given by Gmelin, which agrees 

 so well with the habits of the species above described : — " 6-8-10 pollices 

 longus, squamis argenteis facile deciduis tectus, argenteus, dorso caerulescens, 

 vitae minus tenacis, fertilissimus, ova in locis lacuum herbosis pariens, herbis in 

 fundo nascentibus, vermibus et insectis victitans, piscium aliorum et avium aqua- 

 ticarum frequens praeda, carne alba, multiplici modo esculenta." 



