280 i.V.MN(II)OME!<. 



tlio dorsal tin. Caudal flu subtnmcatc. The osseous iiilerorbital 

 space very broad, mucli broader than the orbit. Each upper tooth 

 with a groove and ridge near the median line. A more or less dis- 

 tinct light ring round the root of the dorsal fin, less conspicuous in 

 adult than j'oung specimens. Upper parts brown ; in young ex- 

 amples light bauds cross the back, and run backwards along each 

 side of the back. The lateral bands are frequently persistent (xan- 

 thopterus) ; but sometimes they disapj^ear, the upper part of the side 

 being spotted with black, one large spot above the end of the pec- 

 toral (which is also sometimes visible in the variety .vanthoptenis) 

 being the most conspicuous (i-ubrqx'f!)- 

 Japan and China. 



Var. ((. rubri2)ety. 



a-b. Adult (1*J inches) : stuffed. Japan. Two of the types of 

 T. rubriprs:. 



Var. /). .i-aiithoptii-us. 



c. Adult (15 inches): stuffed. Japan. One of the types of T. xan- 



tJiopterus. 



d. Adult. Ja])au. Purchased of Mr. Jamracb. 



e. f. Half-grown and young. C'hina. From the Colloction of the 



East-India Company. 

 (J. Young. China. From the Collect.i<m of the Zoological Society. 



11. Tetrodon hamiltoiiii. 



Tetrodou liamiltoui, litclutrds. Ichfh. Ereh. !<; Terr. p. 03, pi. 39. 

 figs. 10 & 11. 



The back and abdomen are covered with minute spines ; however, 

 frequently nothing is visible of the s[)ines, except the pores in which 

 they are lodged, and then the entire fish is smooth to the touch ; and 

 there are specimens which are evidently entirely spineless. Snout 

 short, only one-half longer tlian the eye, and equal to the width of 

 the osseous interorbital space. The length of the head is less than 

 its distance fi-om the dorsal fin. Caudal fin rounded. Lower lateral 

 fold distinct. Upper parts brown, with numerous close round black 

 spots ; cheeks with some brown vertical bands or spots ; some large 

 dark blotches on the sides ; sometimes an indistinct dark band across 

 the back. Lower parts white. 



Port Jackson. 

 a-b, c-e. Adult and half-grown. Port Jackson. From the Haslar 



Collection. — Types of the species. 

 /, r, h~l: Adult (5i inches), half-grown, and young. Port Jackson. 



12. Tetrodon vennicularis. 



Kruscnstern, licise, Atltn', pi. 51. fig. 1. 



Tetraodou vevmicularis, Sr/i/cf/. Fmoi. Jupvii. I'oigg. p. 278, pi. 124. 



(histrophysus verniicularis, L'/cck. I irh. Bat. (Icn. xxv. Japan, p. l:io. 



