. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 176 BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY Several species of Raja, with a sharp snout and with dark pores on the lower surface, bearing a close resemblance to flori- dana, are known from Japanese waters and are described, or discussed, by Ishiyama (1958). Through the kindness of Dr. Ishiyama, the Museum of Comparative Zoology collection in- cludes representatives of all of these. They comprise Raja macracauda Ishiyama 1955, R. gigas Ishiyama 1958, R. macrop- thalma Ishiyama 1958, R. acutispina Ishiyama 1958, R. hoU
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 176 BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY Several species of Raja, with a sharp snout and with dark pores on the lower surface, bearing a close resemblance to flori- dana, are known from Japanese waters and are described, or discussed, by Ishiyama (1958). Through the kindness of Dr. Ishiyama, the Museum of Comparative Zoology collection in- cludes representatives of all of these. They comprise Raja macracauda Ishiyama 1955, R. gigas Ishiyama 1958, R. macrop- thalma Ishiyama 1958, R. acutispina Ishiyama 1958, R. hoUandi Jordan and Richardson 1909, R. tengu Jordan and Fowler 1903, R. pulcra Lui 1932 and R. Jcenojei Miiller and Henle 1841. In spite of the fact that we have this material for comparison, as well as the recently published accounts by Ishiyama, we find it difficult to present reliable characters that might distinguish. Figure 3. Raja floridana, juvenile male 158 mm 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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