306 GTMNODONTES. 



4. DIODON. 



Ostracion, sp., Artcdi. 

 Diodon, sp., i., Ctiv. 

 Paradiodon, Bleek. 



Jaws without median Buturc. Body covered with dermal ossifi- 

 cations, each with a pair of lateral roots and with a stiff, moveable, 

 and erectile spine. Nasal tentacle simple, with a pair of lateral 

 openings. 



Seas between the tropics, extending to the Cape of Good Hope. 



1. Diodon hystrix. 



Histrix piscis, Chesms, Exot. vi. c. 23 ; Jonston, Hist. Nat. Pise. tab. 



45. fig. 4 ; WiUughby, Hist. Pise. tab. J 5. 

 Reversus indicus, Aldrov. Pise. iii. p. 113, tab. 15. fig. 12; Jonstmi, 



I. c. tab. 3. fig. 1. 

 Valent. Amb. p. 458, fig. 357 ; Pcnard, i. p. 9, tab. 5. fig. 32. 

 Ostracion, sp., Artcdi, Gen. p. GO. no. 19; Synon. p. 80. no. 21; 



Grofiov. Miis. ii. p. 40. no. 181, and Zoophyl. p. 47. no'. 181. 

 Seba, iii. p. 58, tab. 23. figs. 1 & 2, and p. 62, "tab. 24. fig. 10. 

 Crayraciou, sp., Klein, Pise. Miss. iii. p. 20. nos. 13 & 14. 

 Erizo, Parra, p. 00, tab. 29. fig. 1. 

 Diodon hystrix, L. Syst. Nat. i. p. 413 ; Bris. Barncv. Rev. Zool. 1840, 



p. 141. 

 atinga, Bl. tab. 12-5; Bl. Schn. p. 511 ; Lnccp. ii. pp. 1 & 3; i. 



pi 25. tig. 3 ; Kmtp, Wieym. Arelu 1855, p. 227 (not L.). 



plumieri, Laec-p. ii. pp. 2 & 10, i. pi. 3. fig. 3. 



bracbiatus, Bl. Schn. p. 513. 



punctatus, Ctiv. I. c. p. 132 ; Bleck. VcrJi. Bat. Gen. xxiv. 



Bhotk. p. 19. 

 Ilolocanthus hystrix, Gronov. Syst. ed. Gray, p. 27. 

 Paradiodon hystrix, Bleek. Atl. Ichth. Gymnod. p. 56, pi. 3; fig. 2. 



Spines strong, dilated at the base, and with a pair of basal grooves ; 

 the postpcctoral spines are the longest, about as long as tlie pectoral 

 fin, those of tlic posterior part of the back short and broad. Frontal 

 sjiines of medium size. The upper and lower side of the tail with two 

 or three pairs of immoveable spines. All tlic upper and lateral parts 

 and the fins with numerous small round black or brown spots. 



Tropical parts of the Atlantic ; Indian Ocean and archipelago ; 

 Pacific. 



a. Twenty-four inches long. Gaboon. Purchased. 

 6-c. Large specimens : stuffed. Fernando Po. 



d. Half-grown : stuffed. Calabar. Presented by — Nimmo, Esq. 



e. Large specimen : stuffed. West Indies. 

 f-i. Adult and half-grown. Jamaica. 



l\ Half-grown. Jamaica. Purchased of Mr. Higgins. 



I. Half-grown : stuffed. Cape Seas. 



m. Half-grown. Amboyna. Purchased of Hr. Frank. 



n. Adult : stuffed. Indian Ocean. Purchased. 



0. Young. Society Islands. Old Collection. 



«. Thirty inches long : stuffed. Presented by S. Pjlackall, Esf). 



q~v. >\dult and young : stuffed. 



