CONTENTS 
SCHIZAMOEBA SALMONIS, A NEW AMEBA PARASITIC IN SALMONID FISHES. By H. S. Davis. Page 
(Document No. 987, issued September 11, 1925) 1-8 
Octomitus salmonis, a parasitic flagellate of trout. By H. S. Davis. (Document 
No. 988, issued August 22, 1925) 9-26 
Second experiment in tagging salmon in the Alaska Peninsula fisheries reserva- 
tion, summer of 1923 . By Charles H. Gilbert and Willis H. Rich. (Document 
No. 991, issued December 3, 1925) 27-75 
Distinguishing characters of two species of red snappers of the Atlantic coast 
of North America. By Samuel F. Hildebrand and Isaac Ginsburg. (Document 
No. 993, issued November 30, 1925) 77-85 
Crayfishes of the genus Cambarus in Nebraska and eastern Colorado. By 
Earl Theron Engle. (Document No. 994, issued December 31, 1925) 87-104 
New genus of darter from western North Carolina. By R. E. Coker. (Docu- 
ment No. 1004, issued August 17, 1926) 105-108 
Salmon-tagging experiments in Alaska, 1924 and 1925. By Willis H. Rich. (Docu- 
ment No. 1005, issued September 8, 1926) 109-146 
Development, growth, and food habits of the white sucker, Catostomus com- 
mersonii Le Sueur. By Norman Hamilton Stewart. (Document No. 1007, 
issued October 25, 1926) 147-184 
Organic content of lake water. By Edward A. Birge and Chancey Juday. (Docu- 
ment No. 1012, issued January 10, 1927) 185-205 
Descriptions of two new species of fishes from Key West, Fla., with notes on 
nine other species collected in the same locality. By Samuel F. Hildebrand 
and Isaac Ginsburg. (Document No. 1013, issued January 6, 1927) 207-215 
The smelts. By William Converse Kendall. (Document No. 1015, issued April 23, 
1927) 217-375 
General index 377-385 
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