/. OSTRACION. 259 



Crayracion, sp., Klein, Pise. Miss. iii. p. 20. no. 17. 



Ostracion tumtus, Forsk. Dcscr. An. p. 75.no. ll.'j; Bl, Ausl. Fisch. 



i. p. 11. '5, taf. 1315 ; .'//. 8chn. p. 500 ; Laa'-p. i. p. 470; lileek. Vcrh. 



lint. Gen. xxiv. lialist. p. ?>\, and Act. Soc. Sc. Indo-Nceii. vii. 



Japan, vi. p. 1'? ; lloUard, Ann. Sc. Nat. lSo7, vii. p. l/jO. 

 Lactophrys camelinus, Dekay, New York Faun. Fish. p. 341, pi. 58. 



fig. 190. 

 Ostracion (Tetrosomns) turritus, Bleek. Atl. Ichth. Ostruc. p. 31. pi. 3 



fig. 3. 



Carapace thrcc-ridged, the dorsal ridge passing into a very large, 

 compressed, elevated, triangular spine. Each ventral ridge with 

 four small flat spines pointing backwards. Supraorbital edge with 

 a small spine pointing backwards and outwards. The carapace forms 

 a broad continuous bridge across the back of the tail. Intcrorbital 

 space concave. Caudal fin rounded. Dui'ing life a bluish spot ia 

 the centre of each scute. 



Indian Ocean and archipelago. (??New lork.) 



a. Adult : skin. Zanzibar. From Lieut.-Col. Plaj-fair's Collection. 



b. Adult (9 inches) : skin. Persian Gulf. Presented by Dr. Leith. 

 c~d. Adult and half-grown. East-Indian archipelago. 



e. Young. Borneo. Presented by Vice-Admiral Sir E. Belcher. 

 f-g. Half-grown : skins. India. Purchased of Mr. Warwick. 

 h. Adult. 



6. Ostracion concatenatus. 



Os<^racion concatenatus, Bl. taf. 131 (adult) ; Bl. Schn. p. 498 ; Laccji. 



i. p. 454; Hollard, Ami. Se. Nat. 1857, vii. p. 155. 



stellifer, Bl. Sclm. p. 499, pi. 98 (young). 



bicuspis, Blmnenbach, Ahbild. taf. 58 ; ^mitk. III. Zool. S. Afr. 



Pise. pi. 18. 



Very closely allied to, and probauiy identical with, 0. gihhosus. 



Carapace threc-ridged, forming a broad continuous bridge across 

 the back of the tail. Dorsal ridge with two compressed small spines 

 placed close together ; each ventral ridge with two similar spines re- 

 mote from each other. Supraorbital edge with a very 3mall or 

 minute spine, pointing backwards and outwards ; it is Ircquently 

 absent, sometimes double. All these spines become less prominent 

 with age, and only traces of them can be discovered in adult ex- 

 amples (8-10 inches). Intcrorbital si)ace concave. Adult examjiles 

 with some horizontal dark stripes on the cheek. 



Cape of Good Hope , Chinese Seas ; ? Australia. 



a-d. AH"lt (10 inches) and half-grown : skins. Cajje of Good 



Hope, 

 e. Yery young. Zanzibar. From Dr. Kirk's Collection. 

 f-g. Young. ? Siam. Purchased of Mr, Jamrach, 

 h. Adult : carapace. New South Wales. From the Fort-Pitt 



'Collection. 

 /. A great number of half-grown and young exam])los : .skins. 



Chinese Sea. 



