1. SALMO. 



87 



IG. Salmo bailloni. 

 Salar bailloni, Cm. 8f Val. xxi. p. 342. 



B. 9. D. 13. A. 10. C. 23. P. 12. V. 9. 



Vomerine teeth in a double series. The length of the head is com- 

 prised four times and a half in the total length. Forehead broad ; the 

 two jaws equal ; suout rather pointed ; teeth fine and closely set on the 

 jaws, the palatines, and the vomer ; these last, in two series, are much 

 smaller than any of those in our common Trout. The back is leaden- 

 coloured, with violet reflections, and covered with rather large, pur- 

 plish spots. There ilre some small brown spots on the dorsal. The 

 pectorals and anal are yellowish. The ventral is white. The caudal, 

 somewhat forked, is grey, without spots. The entire fish is shining 

 silvery. (Valenc) 



The specimens were caught in the Somme, and are believed to be 

 of a migratory species coming from more northern seas. It ought to 

 be compared with Salmo cnmbricus ; the description is so insufficient 

 that, without reexamination of the typical specimens, no opinion can 

 be given as to their affinities. 



VIII. Great Britain and Ireland. 

 17. Salmo brachypoma. 



Salmo criox, Panicll, Fish. Firth of Forth, p. 128, dcscript. pars, and 

 pi. 32. fig. 3 (bad). 



]). 13. A. 10-11. P. 14. V. 9. L. lat. 118-128. L. transv. 27/30 

 Cgec. pyl. 45-47. Vert. 59. 

 Head comparatively small, its length being contained four times 

 and two-thirds in the total (without caudal), four times in old males. 

 Body rather more elongdte than in 8. fario. The posterior point of 

 junction of operculum and subopereulum is nearer to the lower an- 

 terior angle of the subopereulum than to the upper end of the gill- 



8. hrachypoma. 

 Prajoperculum of 

 specimen a, re- 

 duced . 



a. hrach/poma, specimen d, nat. size. 



