auratus L.). Comp Biochem Physiol 31(1): 79-93. 6 

 figs., 1 table. 



I 525 Nevenzel, Judd C, Rodegker, Waldtraut, Robinson, J. 

 Stephen, and Kayama, Mitsu. 1969. The lipids of some 

 lantern fishes (family Myctophidae). Comp Biochem 

 Physiol 31(1): 25-36. 1 fig., 6 tables. 



i 526 Braud, William G., and Weibel, Jorge Erik. 1969. 

 Acquired stimulus control of drug-induced changes in 

 aggressive display in Betta splendens. J Exp Anal Beh 

 12(5): 773-777. 3 figs., 1 table. 



1 527 McNally, Tom. 1969. Bigmouths tell all. Outdoor Life 

 144(5): 64-67, 151-155. 14 figs. 



}' 528 Utida, Seitiro, Hirano, Tetsuya, and Kamiya, Mie. 1969. 

 Seasonal variations in the adjustive responses to seawater 

 in the intestine and gills of the Japanese cultured eel, 

 Anguilla japonica. Proc Jap Acad 45(4): 293 — 297. 3 

 figs. 



!529 Lorenz, Konrad. 1969. So-called viciousness (Part I). 

 Eesti Loodus 12(8): 499-502. 3 figs. In Estonian. 



i 530 Maemets, A. 1969. Possibilities of increasing the supply 

 of food for fish. Eesti Loodus 12(8): 483-486. 2 figs., 

 1 table. 



Y 531 Post, I. 1969. Concerning trout and trout culture. Eesti 

 Loodus 12(8): 464-468. 6 figs. In Estonian. 



! 532 Johnson, Howard E., and Pecor, Charles. Coho salmon 

 mortality and DDT in lake Michigan. 159—166. 2 

 tables. James B. Trefethen, ed. 34th N Amer Wildlife 

 Natur Resour Conf Trans. 504p. Illus. Wildlife 

 Management Institute: Washington, D.C. 20005. 1969. 



! 533 Thys van den Audenaerde, D. 1968. An annotated 

 bibliography of Tilapia (Pisces, Cichlidae). Doc Zool 

 Mus Roy Afr Cent (14): 406p. 



! 534 Dennis, Agnes Cooper. 1969. Marine and freshwater 

 fishes of commercial value to Liberia. Liberian Natur 

 5(1): 28-31. 



i 535 Dennis, Agnes Cooper. 1969. The mudfish — 

 Marcusenius longianalis. Liberian Natur 5(1): 16—18. 

 1 fig. 



i 536 Ueck, M. 1969. Ultrastrukturbesonderheiten der 

 pinealen Sinneszellen von Protopterus dolloi. Z 

 Zellforsch 100(4): 560-580. 10 figs. With English 

 summary. 



\ 537 Welsch, Ulrich, and Storch, Volker. 1969. Die 

 Feinstruktur der Geschmacksknospen von Welsen 

 (Clarias batrachus (L.) und Kryptopterus bicirrhus 

 (Cuvier et Valenciennes)). Z Zellforsch 100(4): 

 552 — 559. 4 figs. With English summmary. 



tf'538 Ristkok, Juri. 1969. Notes on the history of fish 

 protection in Estonia. Eesti Loodus 12(2): 82 — 87. 3 figs. 

 In Estonian. 



»i539 Smith, C. Lavett. and Atz, Ethel Hafter. 1969. The 

 sexual mechanism of the reef bass Pseudogramma 

 bermudensis and its implications in the classification of 

 the Pseudogrammidae (Pisces: Perciformes). Z Morphol 

 Tiere 65(4): 315-326. 3 figs. 



i 540 Jansen, W. F., and Flight, W. F. G. 1969. Light- and 

 electronmicroscopical observations on the saccus 

 vasculosus of the rainbow trout. Z Zellborsch 100(3): 

 439-465. 24 figs. 



Ji541 Penrith, M. J., and Penrith, Mary-Louise. 1969. A new 



species of Lithognathus (Pisces: Sparidae) from the 

 northern coast of South West Africa. Cimbebasia Ser A 

 1(5): 99-111. 8 figs., 1 table. 



806542 Penrith, M. J. 1969. New records of deep-water fishes 

 from South West Africa. Cimbebasia Ser A 1(3): 59 — 75. 

 8 tables. 



806543 Koli, Lauri. 1969. Unusual problems in fish taxonomy. 

 Luonnon Tutkija 73(3): 93 — 105. 4 figs. In Finnish. 



806544 Bitterman, M. E., and Mackintosh, N. J. Habit-reversal 

 and probability learning: rats, birds, and fish. 163—185. 

 8 figs. Gilbert, R.M. and N.S. Sutherland, eds. Animal 

 discrimination learning, xvi + 501p. Illus. Academic 

 Press: London and New York. 1969. 



806545 Mackintosh, N. J. Comparative studies of reversal and 

 probability learning: rats, birds and fish. 137 — 162. 6 

 figs., 2 tables. R.M. Gilbert and N.S. Sutherland, eds. 

 Animal discrimination learning, xvi + 501p. Illus. 

 Academic Press: London and New York. 1969. 



806546 Hulley, P. Alexander. 1969. The relationship between 

 Raja miraletus Linnaeus and Raja ocellifera Regan 

 based on a study of the clasper. S Afr Mus Ann 52(6): 

 137-147. 3 figs., 1 table. 



806547 Massola, Aldo. 1968. The aboriginal fish-traps at 

 Homerton. Victorian Natur 85(7): 197-200. 3 figs. 



806548 Schubert, Gottfried. 1969. Das Geisseltierchen Costia — 

 elektronenmikroskopisch betrachtet. Mikrokosmos 

 58(5): 148-152. 10 figs. 



806549 Bhatt, V. S. 1969. Age determination of Ophicephalus 

 striatus Bloch. Curr Sci 38(2): 41-43. 2 figs., 1 table. 



806550 Cheissin, E. M., and Mosevich, T. N. 1969 Peculiarities 

 of the surface structures in Ichthyophthirius mu/tifiliis, 

 a parasitic ciliate. Tzitologiia 11(6): 689 — 694. In 

 Russian with English summary. 



806551 Calleganni, Carlo. 1969. The hemoglobin polymorphism 

 of the gen. Ictalurus of the river Magra. Riv Idrobiol 

 6(2/3): 127-131. 1 fig. In Italian with English 

 summary. 



806552 Mosher, Kenneth H. 1969. Pacific salmon and steelhead 

 trout by scale characteristics. U S Fish Wildlife Serv Circ 

 (317): 17p. 23 figs. 



806553 Shilo, M., et al. 1969. SIL-IBP discussion meeting on 

 fundamental biological basis of fish culture (under the 

 auspices of The Fish Breeders Association in Israel). 

 Bamidgeh 21(2): 35-62. 



806554 Bohl, Hansjurgen. 1969. Trawl mesh selection 

 experiments on cod (Gadus morhua L.) off Bear island. 

 Ber Deut Wiss Komm Meeresforsch 20(1): 84-90. 4 

 figs., 2 tables. 



806555 Hempel, Gotthilf, and Schubert, Kurt. 1969. 

 Sterblichkeitsbestimmungen an einem Eiklumpen des 

 Nordsee-Herings (Clupea harengus L.). Ber Deut Wiss 

 Komm Meeresforsch 20(1): 79-83. 3 figs., 1 table. With 

 summary and abstract in English. 



806556 Lamp, F., and Tiews. K. 1969. Vergleichende 

 Markierungsexperimente am Ostseedorsch (Gadus 

 morhua) im Jahre 1968. Ber Deut Wiss Komm 

 Meeresforsch 20(1): 76-79. 1 fig., 2 tables. With English 

 abstract. 



806557 Kotthaus, Adolf. 1969. Ergebmsse der deutschen 

 Verpflanzungen markierter Seezungen (Solea solea) in 



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