The weight of the eggs containing embryos 

 increases as the ennbryos develop, even though 

 the eggs are no longer connected to the 

 ovarian tissue. The volume enclosed by the 

 yolk membrane does not decrease as the 

 ennbryo develops, apparently because the yolk 

 used by the developing embryo is replaced 

 by outside fluids. 



Preservation in fornnalin caused some 

 swelling of ripe, unfertilized eggs and fertilized 

 eggs in the stages of development preceding 

 that of blastopore closure. Developing eggs that 

 were not ripe and fertilized eggs after blasto- 

 pore closure did not seem to be adversely af- 

 fected. Swelling of eggs was accompanied by 

 rupturing of the yolk mennbranes, although the 

 egg membrane remained intact. 



The size of the ripe testes of male rock- 

 fish, which are closely associated with the 

 urinary bladder, are greatly reduced com- 

 pared to those of most other species of fish. 



LITERATURE CITED 



AHLSTROM, ELBERT H. 



1943. Studies on the Pacific pilchard or 

 sardine ( Sardinops caerulea) 4. --Influ- 

 ence of temperature on the rate of 

 development of pilchard eggs in nature. 

 U.S. Fish Wildl. Serv., Spec. Sci. Rep. 

 Fish. 23, 26 pp. 



1952. Pilchard eggs and larvae and other 

 fish larvae. Pacific coast, 1950. U.S. 

 Fish Wildl, Serv., Spec. Sci. Rep. Fish. 

 80, 58 pp. 



1953. Pilchard eggs and larvae and other 

 fish larvae. Pacific coast, 1951. U.S. 

 Fish Wildl. Serv., Spec. Sci. Rep. Fish. 

 102, 55 pp. 



1954. Pacific sardine (pilchard) eggs and 

 larvae and other fish larvae, Pacific 

 coast 1952. U.S. Fish Wildl. Serv., 

 Spec. Sci, Rep. Fish. 123, 76 pp. 



1958. Sardine eggs and larvae and other 

 fish larvae. Pacific coast, 1956. U.S. 

 Fish Wildl, Serv. Spec. Sci. Rep. Fish. 

 251, 84 pp. 



1959. Sardine eggs and larvae and other 

 fish larvae. Pacific coast, 1957. U.S. 

 Fish Wildl. Serv., Spec. Sci. Rep. Fish. 

 328. 99 pp. 



AHLSTROM, ELBERT H., and ORVILLE P. 

 BALL, 



1954. Description of eggs and larvae of 

 jack mackerel ( Trachurus symme- 

 tricus ) and distribution and abundance 

 of larvae in 1950 and 1951. U.S. Fish 

 Wildl. Serv., Fish. Bull. 56: 209-245. 



AHLSTROM, ELBERT H., and DAVID 

 KRAMER. 



1955. Pacific sardine (pilchard) eggs and 

 larvae and other fish larvae. Pacific 

 coast, 1953. U.S. Fish Wildl. Serv,, 

 Spec. Sci. Rep. Fish. 155, 74 pp. 



AHLSTROM, ELBERT H., and DAVID 

 KRAMER- - Continued 



1956. Sardine eggs and larvae and other 

 fish larvae. Pacific coast, 1954. U.S. 

 Fish Wildl. Serv., Spec. Sci. Rep. Fish. 

 186, 79 pp. 



1957. Sardine eggs and larvae and other 

 fish larvae. Pacific coast, 1955. U.S. 

 Fish Wildl. Serv., Spec. Sci. Rep. Fish. 

 224, 90 pp. 



BIGELOW, HENRY B., and WILLIAM C. 

 SCHROEDER. 

 1953. Fishes of the Gulf of Maine. U.S. 

 Fish Wildl. Serv., Fish. Bull. 74: 1-577. 

 CLEMENS, W. A. and G. V. WILBY. 



1949. Fishes of the Pacific coast of Canada. 

 Fish. Res. Bd. Can. Bull. 58 (rev.), 

 368 pp. 

 DELACY, ALLAN C, CHARLES R. HITZ, and 

 ROBERT L. DRYFOOS. 

 1964. Maturation, gestation, and birth of 

 rockfish ( Sebastodes) from Washington 

 and adjacent waters. Wash. Dep. Fish. 

 Fish Res. Papers 2(3): 51-67. 

 EIGENMANN, CARL H. 



1894. On the viviparous fishes of the Pacific 

 coast of North America. U.S. Fish 

 Comm., Bull. 12:381-478. 

 FITCH, JOHN E. 



1958. Offshore fishes of California. Calif. 

 Dep. Fish Game, Sacramento, Calif., 

 80 pp. 



FRASER, C. McLean. 



1923. Ichthyological notes. Contrib. Can. 

 Biol., N.S. 1: 285-295. 

 HOWARD, GERALD V., and ANTONIO LANDA. 

 1958. A study of the age, growth, sexual 

 maturity, and spawning of the anchoveta 

 ( Cetengraulis mysticetus ) in the Gulf 

 of Pananna. Inter-Amer. T r o p. Tuna 

 Comm., Bull. 2:390-467. 

 MacGREGOR, JOHN S. 



1957. Fecundity of the Pacific sardine 

 ( Sardinops caerulea ). U.S. Fish Wildl. 

 Serv., Fish. Bull. 57: 427-449. 

 OKADA, YAICHIRO. 



1955. Fishes of Japan. Maruzen Co., Ltd., 

 Tokyo, Japan, 434 pp. 

 PHILLIPS, JULIUS B. 



1957. A review of the rockfishes of Cali- 

 fornia (family Scorpaenidae). Calif. 

 Dep. Fish Game, Fish Bull. 104, 

 158 pp. 

 1964. Life history studies on ten species 

 of rockfish (genus Sebastodes ). Calif. 

 Dep. Fish Game, Fish Bull. 126, 70 pp. 

 SMITH. HUGH M. 



1945. The fresh-water fishes of Siam, or 

 Thailand. Bull. U.S. Nat. Mus. 188, 

 622 pp. 

 WALES, JOSEPH H. 



1952. Life history of the blue rockfish, 

 Sebastodes nnystinus . Calif. Fish Game 

 38: 485-598. 



MS. #1595 



12 



G P 88 3'394 



