18. T^NiuuA. 483 



The upper parts densely covered with flat scale-like tubercles ; 

 several lar:^c globular tubercles in the median line of the scapulary 

 region. Coloration uniform. 

 Eed sea ; Indian seas. 



a-d. Adult, half-grown, and young : stuffed. Indian Ocean. 

 e. Half-grown. East-Iudian archipelago. From Dr. Bleeker's Col- 

 lection. 

 /. Young: skin. Pinang. From Dr. Cantor's Collection. 

 g. Tail of adult. Seychelles. Presented by Lieut. -Col. Playfair. 



18. TiENIURA*. 



Tteniura, Miill. dy Henle. 



These fishes are scarcely generically distinct from Tn/r/on. The 

 tail is provided below vrith a rayless cutaneous fold extending to its 

 extremity. 



Indian seas ; fresh waters of tropical America. 



1. Taeniura lymma. 



PRajah'mma, Forsk. Descr. An. p. 17. 



Trygon lymma, Cue. Regno An.; Hiqjp. All. Fiscli. p. ')\, taf. 13. 



tig. 1, and N. W. Fisch. p. 69. 



ornata, (rray, Ind. Zool 



halgaui, Less. Voi/. Coq. Zool. ii. p. 100, Poiss. pi. 3. 



Tffiuiura lymma, Miill. l^j- Henle, pp. 171, 197 ; Bleek. Verh. Bat. Gen. 



xxiv. Phtff. p. 78 ; Cant. Mai. Fish. p. 430 ; Dtimeril, Elasmohr. p. 619. 



Disk a little longer than broad, entirely rounded on the sides, 

 with the posterior angles pointed. Nasal valve with very small fringes. 

 Two long papilla; on the bottom of the mouth. Tail much longer 

 than the disk. Disk smooth, sometimes with a few very small 

 thorns along the median line of the back. Greyish with rounded 

 blue, dark-edged spots ; a bluish band along each side of the tail. 



Indian Ocean and archipelago. 



a. Adult : stuffed. Red Sea. 



h, e, d. Half-grown. Zanzibar. Presented by Lieut. -Col. Playfair. 



e, f, [/. Half-grown. Singapore. 



Ji, i. Adult and half-grown. East-Indian archipelago. 



k. Young. Ceram. Purchased of Mr. Stevens. 



I, m, n. Young. 



2. Taeniura meyeni. 



iViill. S,- Henle, p. 172, taf. 54 ; Dinncril, Elasmobr. p. 620. 



Disk subcircular, a little broader than long, with the posterior 

 angles rounded. Nasal valve slightly fringed. Five papilla? on the 

 bottom of the mouth. Tail nearly as long as the disk. Disk smooth. 

 Blackish brown a])ove, white below with dark margins. 



Mauritius. 



* 1. Teeniura magdalonsr, DnmerU, Elasmobr. p. 02.").— Rio Magdnlena. 

 2. Tastinaca liumboldtii, Roulin, Ann. Sc. Nat. 1820, xvi. p. 1(4. pi. 3.— 

 K. Meta. 



•2 I 2 



