82 SALMONIDiE. 



Tc. Skin, 10 inches long. Lago ilaggiore. Presented by T. C. 

 Eyton, Esq. 

 Agassiz and Siebold confound this species with the Salmo lacnstris 

 from the Lake of Constance, Avhich has a different number of vertebrae 

 and pyloric appendages, ^. lemanus is more nearly allied to S. fario 

 and S. raiypii than tc/S*. lacustris. The figures given by Agassiz 

 and by Valenciennes convey a very good idea of the characters of 

 this fish. 



11. Salmo rappii. 



Griind-Forelle of the Lake of Constance. 

 Sefahrin, etc., Mangolt, Fischhuch, p. 15. 

 Salmo iUanca, Wartmann, Schrift. Berl. Gesellsch. ntrf, Fretmd. iv. 



1783, p. 55 ; cop. by Bloch, iii. p. 180 {S. lactistris). 

 trutta, Schrank, Ntrhist. Briefe, i. p. 312, and Faun- botca, i. 



p. 319 ; Hartmann, Beschreib. Bodensee s, pp. 146, 147. 



lacustris, Hartmann, Helvet, Ichthyol. p. 101. 



Salmo trutta, Agass. Poiss. d'eau douee, pi. 6, 7, 7". 



Fario trutta, Rapp, Fische des Bodensee s, p. 29, taf. 4 (fig. optima). 



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



B.ll. D.13. A. 12. P. 13. y. 10. L.lat.l20. L. transv. 27/35. 

 C»c. pyl. 48-54. Yert. 59-60. 



Attaining to a length of 36 inches. 



Head somewhat depressed, proportionate in size, nearly two-ninths 

 of the total length (without caudal) ; body stout. Praeoperculum 

 crescenl^shaped, with a very distinct lower limb ; posterior opercular 

 margin obtusely rounded, the operculum being short. Snout pro- 

 duced in very large males only, generally rather obtuse ; male with 

 a short mandi])ulary hook. Maxillary strong, dilated in its hinder 

 portion, extending beyond the orbit in adult examples. Teeth strong ; 

 vomerine teeth in a single series, but frequently irregularly placed, 

 persistent throughout Hfe. Fins well developed ; caudal truncate in 

 mature examples. There are about sixteen scales in a transverse 

 series descending from behind the adipose fin forwards to the lateral 

 line. 



Sides with a reddish hue, and with numerous X-shaped brownish 

 spots. Opercles with roundish spots. 



Lake of Constance. 



a. Male, 24 inches long. Presented by Professor "W. von Eapp. 

 Obtained in the month of December, after spawning ; mandi- 

 bulary hook slightly developed. Caec. pyl. 54. 



h. Female, 17 inches long. Presented by Prof. W. von Eapp. Ob- 

 tained at the same time ; ovaries not developed, ova minute. 

 Csec. pyl. 54. 



e. Male, 32 inches long : skeleton. Presented by Prof. "W. von Rapp. 

 Obtained with the former specimens ; mandibulary hook well 

 developed. 



d. Intestines of specimen o. CaDC. pyl. 54. 



