290 GYMNODONTES. 



D. A simple circtdar nasal cavity. Body smooth : Monotretus (Bibr.). 



33. Tetrodon cutcutia. 



Tetrodon cutcutia, //«?/;. Buck. Fish. Gany. p. 8, pi. 18. fig. 3} 

 Bleek. Verh. Bat. Gen. xxv. Nalez. Beng. p. lOO. 



cavia, Ham. Buch. p. 9. 



gularis, Ham. Buch. p. 10. 



Body entirely naked. Snout short and obtuse, but the eye is 

 nearer to the gUl-opening than to the end of the snout. The inter- 

 orbital space is flat, entirely bony, forming somewhat prominent 

 superciliary edges ; its Avidth is nearly two-thirds of the length of 

 the head. Sides with a network of brownish lines, and with a large 

 black ocellus edged with white in front of the vertical from the 

 origin of the dorsal fin. Sometimes the black ocellus is absent. 



Ganges. Only 4 inches long. 

 a, h, c. Many adult, half-grown, and young specimens. Calcutta. 



E. Ott each side two solid nasal tentacles without opening . Arothron (MOll.). 



34. Tetrodon fahaka. 



Orbis, Salman, fol. 209 (cop. by Willughby, tab. J 1) ; Bondel. De 



Pise. p. 419. 

 Ostracion, sp. no. 11, Artedi, Gen. p. 58. 

 Tetraodon fahaka, Hasselqu. Itin. p. 400; Forsk. p. 76. no. 114; De 



Joannis, in Mag. Zool. 1835, iv. pi. 2. 



lineatua, L. Syst. Nat. p. 411 ; Lacep. i. pp. 475, 497. 



physa, Geoffr. St.-Hil. Descr. Fg. Poiss. Atl. pi. 1. fig. 1, and 



pi. 2 (anatomy). 

 strigosus, Bennett, Proc. Zool. Soc. 1834, p. 46. 



Minute spines cover the back, sides, and the abdomen, leaving 

 the snout, root of the pectoral, and entire tail naked. The ab- 

 dominal spines have five or six roots. Snout short, one-third of the 

 length of the head, and less than he width of the flat interorbital 

 space. Length of the caudal fin equal to its distance from the front 

 margin of the dorsal. Seven blackish bands, the lower of which 

 are sometimes inconspicuous, run in a slightly oblique direction 

 from the pectoral region to the caudal fin and back of the tail. 

 They are as broad as, or rather broader than, the whitish interspaces. 

 Abdomen white, without spots. 



Vert 8/10. 



West Africa ; Nile. 



a. Adult (18 inches) : stufi'ed. Senegal. Purchased of M. Par- 



zudaki. 



b. Half-grown. River Quorra. From the Collection of the Zoological 



Society. — Type of T. strigosus, Benn. The spines are hidden 

 in the thick skin of the abdomen. 



c. Half-grown. West Africa. Purchased of Mr. Dalton. 

 (l-e. Adult. Chartoum. From Mr. Petherick's Collection. 

 f-(j. Half-grown and young : stuffed. Lower Nile. 



