The natural history of fishes, amphibians, & reptiles, or monocardian animals . RAIDM. Rays, Skates, ThornbacJcs. Head generally surrounded by the pectoral fins^ themargins of which form a continuous line with the snout. 1. SuBFAM. TRYGONIN^. Sting Rays. Head surrounded by the pectorals; tail armed withspines or prickles ; eyes far removed from the circum-ference. Tbygon Antiq. Body smooth; tail attenuated^ the tipacute^ with narrow fins above or below^ the basearmed with a prolonged spine, serrated or Forskalii. Riipp. pi, 13. fig. 2. lymnce. lb. fig. 1. Pastinaca Antiq. Resembling
The natural history of fishes, amphibians, & reptiles, or monocardian animals . RAIDM. Rays, Skates, ThornbacJcs. Head generally surrounded by the pectoral fins^ themargins of which form a continuous line with the snout. 1. SuBFAM. TRYGONIN^. Sting Rays. Head surrounded by the pectorals; tail armed withspines or prickles ; eyes far removed from the circum-ference. Tbygon Antiq. Body smooth; tail attenuated^ the tipacute^ with narrow fins above or below^ the basearmed with a prolonged spine, serrated or Forskalii. Riipp. pi, 13. fig. 2. lymnce. lb. fig. 1. Pastinaca Antiq. Resembling Trygon, but the tail is nakedj having one or two spines, but without any perceptible fin either above or below. P. olivacea Sw. Yarrell, ii. 442. Bloch, pi. Sw. Russ. i. pi. 5. dorsalis Sw. Russ. 1. pi. 4. Pteroplatea M. and H. Breadth of the body andpectorals greater than the length; tail very short, withor without spines, but always without annulata Siv. Russ. i. pi. 6. Raia Linn. (fig. QQ.) Body in general beset with 320 CLASSmCATIOX OF FISHES_, sharp prickles or spinoustubercles; tail destituteof a serrated spine^ butbearing two small dorsalfins close to the caudal fin^which is nearly obsolete. R. clavata, Yar. iL 436. rubra? (fig. 99.) Anacaxthus Ehrenh. Ge-neral structure of Pas-tinaca_, but there isneither spine nor fin uponthe tail. A. orbicularis (?) 360. 2. ScBFAM. PTEROCEPHALIX/E. Eagle fins distinct from the head and snout, whichthey do not surround as in the last subfamily ; breadthof the body greater than its length; caudal spine smallor wanting; a small dorsal at the base of the tail,which is long and always naked. Myliobates Cuv. Head prominent, protruding beyondthe pectorals ; tail excessively long. 31. aquila. Duhamel, ii. pi. 10. Rhixoptera KiM. Muzzle deeply emarginate, ordivided into two short lobes, beneath which are some-times two others; mouth placed beneath; teethsmall, tuberculated and pointed; tail sho
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Keywords: ., bookcentury1800, booksubj, booksubjectfishes, booksubjectreptiles
