BIOLOGICAL BULLETIN 



OF THE 



(lOarine Biological Xaboraton> 



WOODS HOLE, MASS. 



VOL. LI OCTOBER, 1926 No. 4 



CONTENTS 



LAMBERT, W. V., 



AND KNOX, C. W. Genetic Studies in Poultry 225 



McNALLY, EDNA. Life Cycle of Nassula ornata and Nassula ele- 



gans: Arc these Species Valid? 237 



KUSNEZOV, N. J. The Morphology of the Copulatory Structures in 



Some Cases of Gynandromorphism in Lepi- 

 doptera 245 



BERRY, S. STILLMAN. Note on the Occurrence and Habits of a Luminous 



Squid (Abralia veranyi) at Madeira 257 



GABRITSCHEVSKY, E. Convergence of Coloration Between American 



Pilose Flies and Bumblebees (Bombus) 269 



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Entered October 10. 1902. at Lancaster, Pa., as second-class matter under Act of Congress of July 16, 1894 



