360 ADDENDA. 



1. S. oquassa, (Grd.) G. & J. RANGELEY LAKE TROUT. 

 (See text.) 



aa. Body stout ; head large, broad above, with large mouth, 

 the maxillary reaching past eye; caudal little forked ; 

 adipose fin very large; red spots large, on back as well 

 as on sides. 



2. S. spectabi/is, (Grd.) G. & J. PACIFIC RED-SPOTTED 

 TKOUT. Streams W. of Sierra Nevada. (/S. campbelli 

 and S. parkii, Suckley.) 



** Hyoid bone toothless ; adipose fin small. 

 b. Head very large and pointed. 



3. S. bairdii, (Suckl.) G. & J. "DOLLY VARDEN 

 TROUT." Streams W. of Sierra Nevada. 



bb. Head large ; rather bluntish. 



4. S. fontinalis, (Mitch.) G. & J. COMMON SPECKLED 

 TROUT. (See text.). U. 2, 11; A. 2, 9. Scales in 225 

 rows. Georgia (Little Tennessee River) to Lake Supe- 

 rior, Hudson's Bay, and Newfoundland; entering the sea, 

 where it becomes the Canadian " Salmon Trout." (/S'. 

 hudsonicus Suckley, S. immaculatus Storer, S. cana- 

 densis Smith, S. hearnii Rich.) 



On page 274: 



Genus COREGONUS. 



I am indebted to Prof. James W. Milner of the U. S. 

 Fish Commission, for an opportunity to examine some of 

 the manuscript of his forthcoming review of the Core- 

 goni, and to study a very full series of the specimens on 

 which the review is based. For many of the conclusions 

 below given, 1 am indebted to Prof. Milner, but for the 

 generic and specific diagnoses and their arrangement 

 here, the present writer only is responsible. The species 

 referred in the text to Coregonus, fall into four well- 

 marked groups, three of which at least may at present 



