ADDENDA 16. SALMONIDiE COREGONUS. 889 



torals and ventrals, the latter of 7 rays, the former of 12. Gill rakers 

 23 (27 ill A.ferox). Eye 5 in head, the maxillary extending to beyond 

 it. Head (3; depth 11. D. 39; A. 10; vertebrie (as in A.ferox) 50. Una- 

 lashka, Alaska. {Bean.) 

 (Bean, Proc. U. S. Nat. Mus. v, 1882.) 



Page 281. After Synodiis lucioceps add : 

 464 {b). S. iittersiicdiiis (Spix) Poey. — Sand-diver. 



Grayish, abruptly paler below; back and sides with eight dark cross- 

 bands, broadest at lateral line; a jet-black blotch on upper part of 

 shoulder-girdle, hidden by opercle; membrane of maxilhiry black; dor- 

 sal and pectorals barred, the former in fine pattern; lower fins and lower 

 part of head sulphur yellow. Body rather stout; head blunt, large, 

 the snout broader than long, about equal to eye, which is L[ in head ; 

 frontal bones little striate ; interorbital space concave, in head ; promi- 

 nent striaj behind eye; jaws subequal; maxillary 1| in head, longer 

 than pectoral. Scales large, 1 to 6 rows on cheek; 3 seritjs between 

 adipose fin and lateral line. Dorsal high, as high as long; i)ectoral 2 

 in head; ventral l^. Head 4; depth 8. D. 11; A. 11; scales 4-48-7. 

 L. 15 inches. West Florida to Brazil. 



{Saiirns hitennedius Siux, Pise. Brazil, 81: Sattrus intermedins Giiuther, v, 39G: Saurits 

 analin Ciiv. &. Val. xxii, 483; Poey, Sjm. Pise. Cub. 414.) 



On page 288, twelfth line, read: Mouth generally terminal. 



On page 21)0, all the text between the description of Microstoma 

 granhtndicum and that of MoUotus, on page 291, should be caucelU^d. 



On page 300, atter Coregonus merki, a<ld : 



493 (h) €. laiii-ettaB Bean. 



"The height of the'body is greater than the length of the head and 

 equals one-fourth of the total length without the caudal ; the distance 

 of the nape from the front margin of the jaw is contained 2.V times in 

 its distance from the beginning of the dorsal. The diameter of the eye 

 equals the length of the snout, and is about one-fifth that of the head. 

 Maxillary rea(-liiiig nearly to the middle of the eye, its length (-ontained 

 3J times in that of the head; the sui)plemental bone about half as long- 

 as the maxilla, and its greatest width equals one-third of its length. 

 The length of the mandible equals three-sevenths of that of the head, 

 reaching to the hind margin of the orbit. The ai)pendage of the ven- 

 tral fin is less than half as long as the fin and nearly equal in length to 

 the 7 scales immediately over it." Eye 5 in head. Scales much smaller 



