302 ^ MR. C. TATE REGAN ON [NoV. 4, 



base of tlie dorsal, another on each side above the pectoral, 

 and sometimes an obscure one at the base of the pectoral. Fins 

 immaculate. 



Shanghai, Chusan, and ISTingpo. Total length 280 mm. 



Tetrodon ocellatus is easily distinguished by its coloration, and 

 by its much narrower ethmoid, fewer dorsal and anal rays 

 (D. 14-15. A. 12-13), and by the spines extending forward 

 only to between the eyes. 



The name fasciatus is preoccupied by Tetrodon fasciatus Bl. 

 Schn., founded on a short description and obviously incorrect 

 figure of Seba, and not since recognized. 



Tetrodon bimaculatus Richardson. 



Body without distinct lateral fold. Nasal papilla moderately 

 eleva,ted, with 2 nostrils. Body nearly as broad as deep ; the 

 leng-th of head nearly 3 times in the total length ; length of snout 

 about 2^ times in the length of head, its breadth less than twice, 

 eye-diameter about 7 times, interorbital width 2^ times, and 

 about 3 times as wide as the ethmoid. Jaws subequal in height, 

 without well-marked ridges at the sides of the median groove, 

 and with slightly concave cutting-edges. Spmes moderately 

 strong, close-set, extending on the back from between the eyes 

 nearly to the dorsal, and on the abdomen from below the level of 

 the eyes to the vent ; the snout, sides of head and body, and 

 caudal peduncle naked. D. 13-14. A. 11-12, pointed, subequal 

 in height, their longest ray nearly half the length of head. 

 Caudal truncate. 



Greyish above, white below ; 1 1 or 1 2 dark transverse stripes 

 on the head and back before the dorsal, the posterior ones 

 becoming horizontal and running back on the caudal peduncle. 

 A blackish spot on each side covered by the upper part of the 

 pectoral, and another on the base of the pectoral. 



Estuaries of Chinese rivers. Total length 140 mm. 



This species is quite distinct from the preceding, with which 

 Richardson considered it to be identical ; and from T. ocellatus it 

 is easily sepai-ated by its colour and by its much broader snout 

 and ethmoid. Richardson's figure (Zool. Sulphur, Fishes, pi. 57) 

 is excellent. 



Tetrodon pleurosticus Gilnther. 



To the synonymy of this species should be added Tetrodon 

 fasciatus Macleay, Proc. Linn. Soc. IST.S.W. ii. 1878, p. 365, pi. x. 

 The three dark spots on the sides described by Giinther terminate 

 the quite distinct dark transverse bands on the back noted by 

 Macleay, and the cross band between the eyes is also present. 



Tetrodon fluviatilis Ham. Buch. 



To the sjaionymy of this species should be added Tetrodon 

 waandersii Bleeker, Nat. T. Ned. Ind. v. 1853, p. 194 {Arothron 

 ivaandersii Blkr., Leiodon waandersii Blkr.). A comparison of 



