. A manual of zoology. ;S,X MANUAL OF ZOOLOGY tral absent. The paired fins are very differently developed in the two groups. In the sharks both pairs are well devel- oped, the pectoral being the larger. In the rays or skates the pectoral fins are extremely large, very much larger than the pelvic, fringing the greater part of the length of the flattened body, and becoming prolonged forwards on either. Fig. 232. — European sting-ray (UrolOphUS cruciatus). (After Gunther.) side and even in front of the head, so that the animal presents the appearance of a broad fleshy leaf. In all recent Elasmobr
. A manual of zoology. ;S,X MANUAL OF ZOOLOGY tral absent. The paired fins are very differently developed in the two groups. In the sharks both pairs are well devel- oped, the pectoral being the larger. In the rays or skates the pectoral fins are extremely large, very much larger than the pelvic, fringing the greater part of the length of the flattened body, and becoming prolonged forwards on either. Fig. 232. — European sting-ray (UrolOphUS cruciatus). (After Gunther.) side and even in front of the head, so that the animal presents the appearance of a broad fleshy leaf. In all recent Elasmobranchs the male has, connected with the pelvic fins, a pair of grooved appendages, the claspers or pterygodia, which subserve copulation. The mouth is situated on the ventral surface of the head, usually a considerable distance from the anterior 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 Parker, T. Jeffery (Thomas Jeffery), 1850-1897; Haswell, William A. (William Aitcheson), 1854-1925. New York, The Macmillan Company; London, Macmillan & Co. ,Ltd.
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