59.11.856:39.9 



CONTRIBUTIONS FROM THE BERMUDA BIOLOGICAL STATION 



FOR RESEARCH. 



No. 72. 



THE PHOTIC SENSITIVITY OF BALANOGLOSSUS. 



BY W. J. CROZIER. 



FROM THE JOURNAL OF EXPERIMENTAL ZOOLOGY, VOL. XXIV, No. 2. 



CAMBRIDGE, MASS., U.S.A. 



NOYEMBER, 1917. 



