84 SALMONID^. 



rays are nearly half as long as the outer ones. There are fifteen 

 scales in a transverse series descending from behind the adipose fin 

 forwards to the lateral line. 



Bright silvery, greenish on the back ; more or less numerous X- 

 shaped black spots on the sides ; smallish roimd spots on the gill- 

 covers and the dorsal fin ; the other fins blackish towards the ex- 

 tremity. 



Lake of Constance and lakes of Upper Austria. 



a. Fine female specimen, 18 inches long. Lake of Constance. From 

 the Stuttgart Museum. Ovaries and ova fully developed*. 



b-c. Fine sterile specimens, 23 to 18 inches long. Lake of Constance. 

 Presented by Prof. W. von Rapp. 



d. Fine sterile specimen, 19 inches long. Lake of Constance. From 



the Stuttgart Museum. 



e. Sterile female specimen, 14 inches long. Lake of Constance. 



Presented by Prof. v. Siebold. 

 /. Skeleton. Lake of Constance. From Dr. A. Giinther's Collection. 



13. Salmo marsiliL 



Lax, Marsil. Danub. Pannon.-Mys. iv. p. 10, tab. 22. 

 Lachs-Forelle, Heckel, in Sitzgsher. Acad. Wiss. TFVen, 1862, viii. p. 348. 

 Fario marsiglii, Heckel^ I. c. taf. 7. figs. 6-8 ; Kner, ibid. 1851, vi. 



p. 244, and 1852, viii. p. 215; Heckel 8f KneTy Susswasserfische, 



p. 267, fig. 149 (not good). 

 Trutta lacustris, part., Siebold, Siisswasserfische, p. 301. 



B. 10-11. D. 13. A. 11. L. lat. 120. Csec. pyL 90-100. 



Attaining to a length of 36 inches and more. Head of proportionate 

 size ; body stout. Prseoperculvun crescent-shaped, with a very indi- 

 stinct lower limb ; posterior opercular margin rather angular ; the 

 posterior point of junction of operculum and suboperculum is midway 

 between the lower anterior angle of the suboperculum and the upper 

 end of the gill-Opening. Snout moderately produced ; maxiUary 

 rather narrow, moderately dilated behind, extending to behind the 

 orbit in adult examples. Teeth strong ; vomerine teeth in a single 

 series, alternately bent towards the right and left, and frequently 

 somewhat irregularly placed. Fins weU developed ; caudal sub- 

 truncate or sHghtly emarginate in adult examples. 



Sides with numerous brownish spots, roundish on the opercles and 

 on the trunk, more X-shaped towards the tail. 



Mountain-lakes of Upper Austria. 



* Prof. V. Eapp informs me, that he also has found the abdominal cavity fuU 

 of ova as large as hemp-seed, in a specimen weighing four pounds and obtained 

 in December. 



