90 
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DEPARTMENT OF THE NAVAL SERVICE 
7 GEORGE V, A. 1917 
LITERATURE REFERRED TO. 
_ Starr Jordan and Evermann—Fishes of North and Middle America. Washing- 
ton, 1896. 
. A. Gunther—Introduction to the Study of Fishes. 
_W. Carmichael McIntosh—Notes from Gatty Marine Laboratory, St. Andrews, 
Scotland, No. xxx1. Ann. Mag. of Nat. Hist., February, 1909. 
4. W. C. MecIntosh—Life History of a Marine Food Fish. Royal Institution lec- 
8. 
es 
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jet 
ture, February 1, 1889, London. 
_W. CG. McIntosh—Coloration of Marine Animals. Introductory university 
lecture. Ann. Nat. Hist., Vol. VII., 1901. 
_ F. E. Beddard—Animal Coloration. Swan, Sonnenschein, London, 1892. 
_ Edward E. Prince—Colours of Animals (Toronto Univ. Lect.), Ottawa Natur- 
alist, Vol. xx., 1906. 
H. ©. Williamson—Specific Characters of Gadus luscus, ete. 24th Ann. Rep. 
Scott. Fish Board, 1905, Part III. 
EXPLANATION OF PLATE. 
Puate 1X. 
. Haddock, Gadus aeglefinus, showing usual “thumb-mark.” 
2. Haddock, Gadus aeglefinus (11-inch long), with six transverse bars or 
thumb-marks. 
“ 3. Haddock, Gadus aeglefinus (15-inch long), with four transverse bars or 
thumb-marks. . 
“ 4, European Bib, Gadus luscus (2%-inch long), with four transverse bars, 
after W. C. McIntosh. 
“ 5. European Whiting, G. merlangus (14-inch long), with thirteen partial 
bars. 
“ 6. Atlantic Salmon parr, Salmo salar, with nine lateral patches enlarged 
one-third. 
7. Pacific Sockeye salmon parr, Oncorhynchus nerka, eight months old, with 
12 or 14 lateral patches, somewhat enlarged. 
“ § > QCunner or Sea Perch, Tautogolabrus adspersus (4-inch long), with nine 
lateral bars. 
“ 9. Black Chromatophores or pigment spots in the skin of the Stickleback 
(G. aculeatus).< 250. 
