18. T^NiuuA. 483 



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

 several large globular tubercles in the median line of the scapulary 

 region. Coloration uniform. 

 Hod sea ; Indian seas. 



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

 e. Half-grown. East-Indian archipelago. Erom Dr. Bleeker's Col- 

 lection. 

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

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



18. T^NIURA*. 



Ticuiura, Midi. Sf Hcidc. 



These fishes are scarcely gencrically distinct from Tri/r/on. Tlie 

 tail in provided below with a rayloss cutaneous fold extending to its 

 extremity. 



Indian seas ; fresh waters of tropical America. 



] . Ta3iiiura lymma. 

 PRajalymma, Fo7-sk. Dcscr. An. p. 17. 

 Trvgon lymma, Cuv. Bigne An. ; liiipp. At/. Fiscli. p. ol, taf. l.'i. 



fig. 1, and N. W. Fisch. p. 60. 



ornata, Gray, Ind. Zool 



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



Ta3uim-a lymma, Midl'.S,- Jlenle, pp. 171, 107; Block. Vcrh.Bat. Gen. 



xxiv. Ping. p. 78 ; Cant. Mai. Fish. p. 4.30 ; Dum6nl, Elasniohr. p. G19. 



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

 with the posterior angles pointed. Nasal valve A\ath 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. Ecd Sea. 



ft, c, d. Half-grown. Zanzibar. Presented by Lieut. -Cul. Playfair. 



e, f, cj. Half-grown. Singapore. 



h, i. Adult and half-grown. East-Indian archipelngo. 



Tc. Young. Coram. Purchased of Mr. Stevens. 



I, m, n. Young. 



2. Taeniura meyeni. 



3Iidl. S,- Henle, p. 172, taf. 54 ; DumerU, Elasmohr. p. 620. 



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

 angles rounded. Nasal valve slightly fringed. Eive papillae on the 

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

 Blackish brown above, white below with dar-k margins. 



Mauritius. 



* 1. Tseniiira magdalensp, D/nnerif, Elasmohr. p. 02;'). — Eio Magdnlrna. 



2. Pastiiiaca Inimbokllii, lioi'lin, Ann. Se. Nut. 182't, xvi. p. KM. pi. ;?. — 

 R. Met a. 



•2 I 2 



