ADDENDA. 307 



trout of the Tweed. Its young are named Warkworth and Coquet trout, in the 

 north of England, and it is also supposed to be the species which the Scottish 

 fishermen call Norway trout and Norway salmon. I have recently ascertained 

 that the note at the bottom of page 140 respecting the habits of the Salmon-trout 

 refers properly to the salmo Cambriscus, which is termed salmon-trout in many' 

 parts of Cornwall and Wales, while the appellation of Sewin is given indiscrimi- 

 nately to our Salmon-trout (p. 140), and to the salmo trutta, or Nith trout (p. 142) . 

 Colonel Lawrence informs me that the hook of the under jaw is very decided, even 

 in the young salmo Cambriscus. This fact, together with a consideration of the 

 synonyms quoted by Mr. Yarrell, tends to strengthen the opinion I have expressed 

 of the Lapland salmon noticed by Linnseus, the $. hamatus of Cuvier, the Bull 

 trout of the Tweed, and the S. Cambriscus of Donovan, being one and the same 

 species. According to Mr. Yarrell the normal number of the dorsal vertebrae in 

 the Bull-trout is 59. 



Page 144. Salmo far'io. 



In Mr. Yarrell' s work, part x., p. 53, the normal number of the dorsal vertebrae 

 in this species is stated to be 56, instead of 58 as I have mentioned in the text. 



Page 226, to follow Salmo Clarkii. 



By the friendly attentions of P. W. Dease, Esq., I have received small speci- 

 mens of three different kinds of trout from New Caledonia. One species, named 

 by the natives * Duggang, agrees exactly in external characters with the Salmo 

 nitidus of the peninsula of Boothia (page 171, pi. 82, f. 1), the only discrepancy 

 being some traces of a different distribution of spots and tints of colour, which 

 may be owing to the different seasons in which the fish were captured, or to the 

 mode of preparing the skins. 



Another, named Suppai, of which there are three specimens, resembles the 

 young of an anadromous salmon. The scales are thin, flexible, and bright, the 

 body is marked chiefly above the lateral line with scattered crucial or crescentic 

 black spots, and the dorsal and caudal are thickly dotted with oval blackish marks 



* The envelopes of the specimens on which the names were written having been disturbed at the Custom-house, tl.e 

 appropriation of the native names is not quite certain. 



2 r 2 



