. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. NOTES ON SOME PROBLEMS OF ADAPTATION: 4. THE PHOTIC SENSITIVITY OF W. J. CROZIER, ZOOLOGICAL LABORATORY, RUTGERS COLLEGE. Parker ('09) has commented upon the curious fact that al- though so primitive a chordate as ammocoetes exhibits a well- defined integumentary sensitivity toward light, marine fishes as a class seem devoid of this type of irritability, which is also absent in Amphioxus (Parker, '08; Crozier, '17). Recently Jordan ('17) has described the first recognized instance of photic sensitivity resident in


. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. NOTES ON SOME PROBLEMS OF ADAPTATION: 4. THE PHOTIC SENSITIVITY OF W. J. CROZIER, ZOOLOGICAL LABORATORY, RUTGERS COLLEGE. Parker ('09) has commented upon the curious fact that al- though so primitive a chordate as ammocoetes exhibits a well- defined integumentary sensitivity toward light, marine fishes as a class seem devoid of this type of irritability, which is also absent in Amphioxus (Parker, '08; Crozier, '17). Recently Jordan ('17) has described the first recognized instance of photic sensitivity resident in the skin of a marine teleost, the hamlet (Epinephelus striatus}. I wish now to record a second example of this type of sensitivity in a marine fish, Ogilbia (Brosmo- phycis) verrillii Gar man. The case of Ogilbia is of peculiar interest. The Brotulidae, to which group Ogilbia belongs, are for the most part deep water fishes, but include several forms occurring in warm shallow situations on the Pacific and on the Atlantic shores of America. They seem to represent the ancestral type from which may be traced the evolution of the blind brotulids of the Cuban caves (Eigenmann, '09). The behavior of Ogilbia, concerning which very little has been known, should in consequence be a source of important information bearing upon the derivation of the related cave forms. Ogilbia verrillii (Garman, 'oo) was first collected at Bermuda by Verrill. According to Eigenmann ('09, p. 187)—-who, curi-. FIG. i. Ogilbia verrillii Garm. (X 25). Note the relatively minute eye. 1 Contributions from the Bermuda Biological Station for Research, No. 130. 98. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Li


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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology