. Sketches of the natural history of Ceylon; with narratives and anecdotes illustrative of the habits and instincts of the mammalia, birds, reptiles, fishes, insects, &c. including a monograph of the elephant ... Zoology; Elephants. Chap. X.] THE THERAPON. 337 in their internal organisation that they differ most from the perches of Europe; their skeletons are composed of. —. *r THERAPON QUADRILINEATUS. fewer vertebree, and the air bladder of the Therapon is divided into two portions, as in the carps. Four species at least of this genus inhabit the lakes and rivers of Ceylon, and one of the
. Sketches of the natural history of Ceylon; with narratives and anecdotes illustrative of the habits and instincts of the mammalia, birds, reptiles, fishes, insects, &c. including a monograph of the elephant ... Zoology; Elephants. Chap. X.] THE THERAPON. 337 in their internal organisation that they differ most from the perches of Europe; their skeletons are composed of. —. *r THERAPON QUADRILINEATUS. fewer vertebree, and the air bladder of the Therapon is divided into two portions, as in the carps. Four species at least of this genus inhabit the lakes and rivers of Ceylon, and one of them, of which a figure is given above, has been but imperfectly described in any ichthyo- logical work^; it attains to the length of seven inches. In addition to marine eels, in which the Indian coasts abound, Ceylon has some true fresh-water eels, which never enter the sea. These are known to the natives under the name of Theliya, and to naturaHsts by that of Mastacemhelus. They have sometimes in ichthyological systems been referred to the Scombridae and other ma- rine families, from the circumstance that the dorsal fin anteriorly is composed of spines. But, in addition to the ' Holoeentrus quadrilineatus, Block. It is allied to Helotes polytcenia, Ble^., from Halma- heira, from which it can be readily distinguished by having only five or six blackish longitu- dinal bands, the black humeral spot being between the first and second; another blackish blotch is in the spinous dorsal fin. There are two specimens in the British Museimi colleetion, one of which has recently arrived from Amoy; of the other the locality is un- known. See GcJNTHEE, AcantAopt. Fishes, vol. i. p. 282, where mention of the black humeral spot has been 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 Tennent, James Emerson, Sir,
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