. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 12 INEZ L. WHIPPLE. orbital glands, into the opinion that in Batrachoseps at least, the glandular mass had orifices upon the surface of the conjunctiva also. I have not myself sectioned Batrachoseps but from the relationships which I have worked out from sections of both DcsmognatJuis and Plethodon I am convinced that the orbital glands are absolutely distinct and separate from the naso-labial in these forms. Bruner's ('96, //) observations as to the orifices of the glands were correct so far as they went in that these were
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 12 INEZ L. WHIPPLE. orbital glands, into the opinion that in Batrachoseps at least, the glandular mass had orifices upon the surface of the conjunctiva also. I have not myself sectioned Batrachoseps but from the relationships which I have worked out from sections of both DcsmognatJuis and Plethodon I am convinced that the orbital glands are absolutely distinct and separate from the naso-labial in these forms. Bruner's ('96, //) observations as to the orifices of the glands were correct so far as they went in that these were located in common with those of the external nasal glands of other sala- manders, on the border of the naris. His observations, however, did not extend to those of the glands which open along the naso- labial groove. DEVELOPMENT OF THE NASO-LABIAL GROOVE AND GLANDS. The naso-labial apparatus is essentially an adult characteristic. In large Desmognathus larvae (25 mm.) collected in early sum- mer and only a few millimeters shorter than the smallest adults which I have found (33 mm.) the groove has hardly begun to develop and the anlagen of only the largest of the glands are to be found. During the two months which follow, these structures undergo rapid development, so that the little adults which abound b. Fi<;. 8. Horizontal section through the head of a Desmognathus fusca larva, cut slightly obliquely. The left side of the section passes just below, the right slightly above, the external naris, < 42. nep, nasal epithelium; //-, trabecula. Other designations as in previous 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; Lillie, Frank Rattray, 1870-1947; Moore, Carl
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
