as estimates of processing and product costs, are 

 shown for a proposed commercial process. Data are 

 presented on the physical, chemical, nutritional, bac- 

 teriological, and toxicological studies on marine pro- 

 tein concentrate, produced by a method closely ap- 

 proximating the proposed commercial process. 



585. Published in 1967. 



586. Commercial flounder gigging. By Hilton 

 M. Floyd. February 1966, iii + 5 pp., 6 figs. 



.ABSTR.ACT 

 The leaflet describes a commercial method of 

 spearing southern flounder (Paralichthys letho- 

 stigma) , and the gear used. The essential equip- 

 ment is a spear and a light. 



587-588. Published in 1965. 



589. The shrimj) and the shrimp fishery of the 

 southern United States. By William W. An- 

 derson. Revised January 1966, 8 pp., 9 figs. 



(No abstract.) 



590. List of fishery associations in the United 

 States. By Leslie D. McMullin. Revised May 

 1966, iv + 6 pp. 



(No abstract.) 



591. Fishery motion pictures. 



(No author, no abstract, no date.) 



592. The striped bass. By Paul R. Nichols. 

 October 1966, iii + 6 pp., 5 figs. 



(No abstract.) 



593. Graduate educational grants, academic 

 year 1967-1968. Anonymous. 5 pp., 5 figs. 



(No abstract.) 



594. Published in 1967. 



598. List of fishery associations in the United 

 States. By Leslie D. McMullin. Revised De- 

 cember 1966, iii -f 4 pp. 



(No abstract.) 



599. List of fishery cooperatives in the United 

 States, 1966-67. By Leslie D. McMullin. Re- 

 vised October 1966, v -f 14 pp. 



(No abstract.) 



Special Scientific Report— Fisheries 



525. Comparative study of juvenile American 

 shad populations by fin ray and scute counts. 

 By Paul R. Nichols. February 1966, iii + 

 10 pp., 14 tables. 



AB.STR.ACT 

 Forty-five juvenile American shad, Alona sapidis- 

 simn (Wilson), collections, from 10 major shad pro- 

 ducing rivers along the Atlantic coast of North 

 -America, were examined to see if differences in 

 meristic counts suggested evidence of discrete river 

 populations. Four meristic characters — pectoral, 

 dorsal, and anal fin rays and scutes — were used. 

 The difference in the counts between locations and 

 between years within rivers was small compared to 

 that between rivers. The differences in counts be- 

 tween rivers indicated that discrete populations of 

 juvenile shad occurred in rivers. 



526. S^mopsis on the biology of the jack mack- 

 erel (Trachiincs symmetrictis) By John S. 

 MacGregor. April 1966, iii + 16 pp., 6 figs., 

 2 tables. 



ABSTRACT 

 This sjTiopsis brings together all extant knowl- 

 edge of the jack mackerel. This knowledge covers 

 nomenclature, taxonomy, morphology, distribution, 

 ecologTi' and life history, population, exploitation, 

 and protection and management. 



595. List of Fishery Leaflets of the U.S. Fish 

 and Wildlife Service. Anonymous. Decem- 

 ber 1966, 29 pp. 



(No abstract.) 



596. List of Circulars of the U.S. Fish and 

 Wildlife Service. Anonymous. December 

 1966, 13 pp. 



(No abstract.) 



597. List of Fishery Bulletins of the U.S. Fish 

 and Wildlife Service. Anonymous. Decem- 

 ber 1966, 15 pp. 



(No abstract.) 



527. Age and size composition of the menhaden 

 catch along the Atlantic coast of the United 

 States, 1962 with a brief review of the com- 

 mercial fishery. By William R. Nicholson and 

 Joseph R. Higham. Jr. February 1966, iv + 

 24 pp., 6 figs., 8 tables, 15 app. tables. 

 ABSTRACT 

 The 1962 purse seine catch of Atlantic menhaden, 

 Brevoortia tyrfDmiis, was 600,000 tons in the sum- 

 mer fishery and 29,000 tons in the North Carolina 

 fall fishery. The mean catch per purse seine set, 

 based on an estimated number of 26,176 sets, was 

 24 tons. The 1958 year class (age 4) dominated 

 the fishery in the Middle and North Atlantic Areas 



