'i. TETROTION. 303 



fin with small ocolli, confluent into subvortical bands in front and 

 below. Caudal fin entirely immaculate. 



a. Type of the species. Amboyna. From Dr. Blocker's Collection. 



Var. natalensis. The sides of the head in front of the pectoral fin 

 ornamented as the body ; cheeks with short horizontal and vertical 

 bluish lines. Basal half of the caudal fin spotted like the body. 



b. Fine specimen. Port Natal. From Mr. Th. Ayres's Collection. 



53. Tetrodon rostratus. 



Tetrodon rostratus, Block, Ausl. Flsch. ii. p. 8, pi. 146. fig. 2 ; Lacep. 



i. p. 502; £1. Sclin. Y>. !i05. 

 capistratus, Loire, Proc. Zool. Soc. 18-39, p. 90. 



No dorsal spot. Caudal Jin with the npper and lower margins 

 blacJr, otherwise immaculate. An irregular brownish baud from above 

 the pectoral to the upper caudal margin ; in large examples this 

 band is broken up into small spots and iindulated lines of a bluish 

 colour. An incomplete bluish median abdominal band. Back above 

 the band immaculate. Sides with bluish oceUi. The upper profile 

 of the snout slightly concave. Spiiies on the abdomen oiily, but not 

 very small, and two-rooted. 



Madeira ; Cape Ycrde Islands. 



rt. Adult. 



h. Half-grown. Funchal. Presented by the Rev. R. T. Lowe. 



c. Half-grown : in bad state. Madeira. Presented by J. Y. John- 



son, Esq. 

 d-e. Half-grown. Porto Prayo. Presented by the Rev. R. T. 

 Lowe. 



This is evidently T. rostratus of Bloch ; he has also indicated the 

 blackish margins of the caudal fin. 



54. Tetrodon candacinctus. 



Prilonotus vel Anchisomus caudacinctus, Richards. Voy. Herald, Fish. 

 p. 1G2, pi. 30. figs. 1-^3. 



Described from a single example in bad condition. 



A slight trace of a dark spot exists on the back below the first 

 dorsal rays. Light brown above, whitish below. Some pale dots 

 on the posterior part of the back run into rows near the caudal. The 

 under half of the tail and chin are crossed transvcrsehj hy chestnut- 

 coloured bars ; three of the same hue radiate with a curve from the 

 eye towards the nostrils, and four from the eye curve over the 

 temples. There are also some markings of a similar tint on the 

 outer rays of the caudal, and a single purplish line. Tail spineless. 

 (liichards.) 



Hab. ? 



Tetrodon ornatus, Poey, Report. Fis.-nat. Cuba, ii. pp. 2-44, 433, 

 seems to be most closely allied to the preceding species. It has the 



