Excerpt from Bulletin of the United States Fish Commission, 1885, Vol. 5
Through the courtesy of Dr. T. H. Bean, curator of the ichthyological department of the United States National Museum, I have been enabled to study the male generative glands Это и многое другое вы найдете в книге Bulletin of the United States Fish Commission, 1885, Vol. 5 (Classic Reprint)