land, Alaska, by Robert J. Ellis. October 1969, iii 

 + 13 p., 5 figs., 10 tables. 



590. Distributions of fishes in fresh water of Katmai 

 National Monument, Alaska, and their 

 zoogeographical implications, by William R. Heard, 

 Richard L. Wallace, and Wilbur L. Hartman. Oc- 

 tober 1969, iii + 20 p., 2 figs., 3 tables. 



591. A bibliography of the lobsters, Genus Homarus, by 

 R. D. Lewis. January 1970, i + 47 p. 



592. Passage of adult salmon and trout through pipes, 

 by Emil Slatick. January 1970, iii + 18 p., 8 figs., 



12 tables. 



593. Review of studies of tuna food in the Atlantic 

 Ocean, by Alexander Dragovich. December 1969, 

 iii + 21 p., 1 app. table. 



594. Seasonal and areal distribution of zooplankton 

 in coastal waters of the Gulf of Maine, 1967 and 

 1968, by Kenneth Sherman. July 1970, iii + 8 p., 6 

 figs., 3 tables. 



595. Size, seasonal abundance, and length-weight rela- 

 tion of some scombrid fishes from southeast Florida, 

 by Grant L. Beardsley, Jr. and William J. 

 Richards. May 1970, iii -I- 6 p., 5 figs., 2 tables. 



596. Fecundity, multiple spawnings, and description of 

 the gonads in Sebastodes, by John S. Mac- 

 Gregor. March 1970, iii + 12 p., 6 figs., 7 tables. 



597. Fur seal investigations, 1967, by Marine Mammal 

 Biological Laboratory. March 1970, vii + 104 p., 31 

 figs., 79 tables. 



598. Size composition, sex ratio, and size at maturity of 

 offshore northern lobsters, by Bernard E. Skud and 

 Herbert C. Perkins. December 1969, iii + 10 p., 6 

 figs., 12 tables. 



599. Diagnostic characters of juveniles of the shrimps 

 Penaeus aztecus aztecus, P. duorarum duorarum, 

 and P. brasiliensis (Crustacea, Decapoda, 

 Penaeidae), by Isabel Perez Farfante. February 

 1970, iii -f- 26 p., 25 figs. 



600. Birectilinear recruitment curves to assess in- 

 fluence of lake size on survival of sockeye salmon 

 (Oncorhynchus nerka) to Bristol Bay and forecast 

 runs, by Ralph P. Silliman. March 1970, iii -I- 9 p., 



13 figs., 2 tables. 



601. Effect of flow on performance and behavior of 

 chinook salmon in fishways, by Clark S. Thomp- 

 son. March 1970, iii -I- 11 p., 8 figs., 3 tables. 



602. Biological characteristics of intertidal and fresh- 

 water spawning pink salmon at Olsen Creek, Prince 

 William Sound, Alaska, 1962-63, by John H. 

 Helle. May 1970, iii -I- 19 p., 11 figs., 5 tables. 



603. Distribution and abundance of fish in the Yakima 

 River, Wash., April 1957 to May 1958, by Benjamin 

 G. Patten, Richard B. Thompson, and William D. 

 Gronlund. June 1970, iii -I- 31 p., 26 figs., 37 

 tables. 



604. The flora and fauna of a basin in central Florida 

 Bay, by J. Harold Hudson, Donald M. Allen, and T. 

 J. Costello. May 1970, iii + 14 p., 2 figs., 1 table. 



605. Contributions to the life histories of several 



penaeid shrimps (Penaeidae) along the south At- 

 lantic coast of the United States, by William W. 

 Anderson. May 1970, iii + 24 p., 15 figs., 12 tables. 



606. Annotated references on the Pacific saury, 

 Cololabis saira, by Steven E. Hughes. June 1970, 

 iii + 12 p. 



607. Studies on continuous transmission frequency 

 modulated sonar, by Frank J. Hester 

 (editor). June 1970, iii -I- 26 p. 



(607.) Sonar target classification experiments with a 

 continuous-transmission doppler sonar, by Frank J. 

 Hester. June 1970, p. 1-20, 14 figs., 4 tables. 



(607.) Acoustic target strength of several species offish, 

 by H. W. Volberg. June 1970, p. 21-26, 10 figs. 



608. Preliminary designs of traveling screens to collect 

 juvenile fish. July 1970, v -I- 15 p. 



(608.) Traveling screens for collection of juvenile salm- 

 on (models I and II), by Daniel W. Bates and John 

 G. Vanderwalker. July 1970, p. 1-5, 6 figs., 1 table. 



(608.) Design and operation of a cantilevered traveling 

 fish screen (model V), by Daniel W. Bates, Ernest 

 W. Murphey, and Earl F. Prentice, p. 6-15, 10 figs., 1 

 table. 



609. Annotated bibliography of zooplankton sampling 

 devices, by Jack W. Jossi. July 1970, iii -(- 90 p. 



610. Limnological study of lower Columbia River, 1967- 

 68, by Shirley M. Clark and George R. Sny- 

 der. July 1970, iii + 14 p., 15 figs., 11 tables. 



611. Laboratory tests of an electrical barrier for eon- 

 trolling predation by northern squawfish, by Galen 

 H. Maxfield, Robert H. Lander, and Charles D. 

 Volz. July 1970, iii + 8 p., 4 figs., 5 tables. 



612. The Trade Wind Zone Oceanography Pilot Study. 

 Part VIII: Sea-level meteorological properties and 

 heat exchange processes, July 1963 to June 1965, by 

 Gunter R. Seckel. June 1970, iv + 129 p., 6 figs., 8 

 tables. 



613. Sea-bottom photographs and macrobenthos col- 

 lections from the Continental Shelf off 

 Massachusetts, by Roland L. Wigley and Roger B. 

 Theroux. August 1970, iii -I- 12 p., 8 figs., 2 tables. 



614. A sled-mounted suction sampler for benthic or- 

 ganisms, by Donald M. Allen and J. Harold Hud- 

 son. August 1970, iii + 5 p., 5 figs., 1 table. 



615. Distribution of fishing effort and catches of skip- 

 jack tuna, Katsuivonus pelamis, in Hawaiian 

 waters, by quarters of the year, 1948-65, by Richard 

 N. Uchida. June 1970, iv + 37 p., 6 figs., 22 tables. 



616. Effect of quality of the spawning bed on growth 

 and development of pink salmon embryos and 

 alevins, by Ralph A. Wells and William J. Mc- 

 Neil. August 1970, iii -(- 6 p., 4 tables. 



617. Fur seal investigations, 1968, by NMFS, Marine 

 Mammal Biological Laboratory. December 1970, 

 iii -I- 125 p., 32 figs., 53 tables, 99 app. tables. 



618. Spawning areas and abundance of steelhead trout 

 and coho, sockeye, and chum salmon in the Colum- 

 bia River Basin — past and present, by Leonard A. 

 Fulton. December 1970, iii + 37 p., 6 figs., 11 

 maps, 9 tables. 



76 



