74 SALMONID^. 



The distance from the dorsal fin to the occiput, if measured back 

 from behind that fin, reaches midway between the adipose and the 

 root of the caudal fin. The dorsal fiii is higher than long, and con- 

 sists of fourteen rays, the first four being rudimentary, the fifth 

 simple and as long as the sixth, which is branched, the terminal ray 

 cleft to the root. 



The anal fin is two-thirds as long as high, and consists of ten rays, 

 the first two of which are rudimentary, the third simple and as long 

 us the fourth, the last ray cleft throughout. 



The pectoral fin is one-foiu'th of an inch shorter than the postor- 

 bital portion of the head ; its length is one-half of its distance from 

 the ventral fin. 



The ventral fin is shorter than the pectoral, reaching more than 

 midway between its root and the vent ; its outermost ray is opposite 

 to the tenth of the dorsal fin. Caudal truncated. 



There are 120 transverse scries of scales, counted immediately above 

 the lateral line ; the series descending backwards from the origin of 

 the dorsal fin to the lateral line has twenty-six scales ; that from the 

 hinder end of the adipose forwards to the lateral line has sixteen 

 scales : there are twenty-two longitudinal series between the lateral 

 line and the ventral fin. All the scales rounded, without median 

 ridge ; those on the back are enveloped in a rather thick skin. 



Back greenish brown, becoming more silvery on the sides ; belly 

 brownish ; sides with niunerous reticulated black spots, between 

 which red ones are interspersed ; opercular bones with a few black 

 spots. Dorsal fin with several series of large oval black spots ; anal 

 and caudal blackish ; pectorals and ventrals pale-coloured, with 

 blacldsh tinge. Dorsal, anal, and ventral fins with a very narrow 

 whitish outer edge. 



Pyloric appendages forty-seven. 



Descnption of a Female specimen from the Brenz, caught after the 

 spaiuning-thne, 



inches. 



Total length 13i 



Greatest depth of the body 2f 



Length of the head 2|- 



Girth of biggest part of body Si- 

 Least depth of the tail 1 J 



Girth of narrowest part of tail 2f 



Distance between end of snout and eye | 



Diameter of the eye i 



Length of maxillaiy bone 1^ 



Distance between eye and angle of prseopcrculiun . . 1 



Greatest width of operculum ^ 



Greatest depth of operculum ^ 



Distance between occiput and origin of dorsal fin . . 3f 



Distance between end of dorsal and root of caudal . . 4^ j 



Length of base of dorsal If ] 



Greatest height of dorsal lA 



