. Mark anniversary volume; to Edward Laurens Mark, Hersey Professor of Anatomy and Director of the ZooÌlogical Laboratory at Harvard University, in celebration of twenty-five years of successful work for the advancement of zooÌlogy. Mark, E. L. (Edward Laurens), 1847-1946; Zoology; Anatomy, Comparative; Physiology; Embryology. AND ITS BIOLOGICAL SIGNIFICANCE. 327 in the left one. In the last five or six species named the rudimentary right toe has usually been classed with the substyles, though it can as a matter of fact be recog- nized when a comparison of a series of species is made. Finally,
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. Mark anniversary volume; to Edward Laurens Mark, Hersey Professor of Anatomy and Director of the ZooÌlogical Laboratory at Harvard University, in celebration of twenty-five years of successful work for the advancement of zooÌlogy. Mark, E. L. (Edward Laurens), 1847-1946; Zoology; Anatomy, Comparative; Physiology; Embryology. AND ITS BIOLOGICAL SIGNIFICANCE. 327 in the left one. In the last five or six species named the rudimentary right toe has usually been classed with the substyles, though it can as a matter of fact be recog- nized when a comparison of a series of species is made. Finally, there are certain. rsu muc. â piQ. G.âToes of a number of species of Rattulidae, viewed from the dorsodextral side, showing stages in reduction of the right toe (original). Abbreviations: dg.dx., right toe; gl.muc., mucous gland; rsv.muc., mucous reservoir. 1, Diurella tigrisMiiller; 2, Diurella stylata Eyferth; 3, Diurella brachyuraGosse; 4, Diurella porcellus Gosse; 5, Diurella insignis Herrick; 6, Diurella tenuior Gosse; 7, Rattulus gracilis Tessin; 8, Rattulus lophoessus Gosse; 9, Rattulus elongatus Gosse; 10, Rattulus longiseta Schrank; 11, Rattulus scipio Gosse; 12, Rattulus carinatus Lamarck; 13, Rattulus multicrinis Kellicott; 14, Rattulus pusillus Lauterborn; 15, Rattulus bicristatus Gosse (proximal part of toe). species, as Rattulus bicristatus Gosse (15), in which it is difficult or impossible to distinguish between the rudimentary right toe and the substyles.. 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 work.. Parker, George Howard, 1864-1955. New York, H. Holt and Company