81 



a light anterior and lateral margin, and a cream colored spot 

 near the sutural margin ; body white, with from 31 to 34 annular 

 Vjlack cross-bands, which are much broader on the back than on 

 the abdomen ; lower surface of the head with longitudinal dark 

 streaks. 



Of the three specimens examined in the preparation of this 

 description, two were obtained tlirough the kindness of Mr. A. 

 Zietz, of the South Australian Museum, Adelaide, who collected 

 them in the neighbourhood of Port Augusta, S.A., and who 

 further informs me by letter that he has since received specimens 

 from Port Pirie, S.A. The third specimen was collected by 

 Mr. A. J. Campbell, of Melbourne, in West Australia, and 

 forwarded to the Institution for identification. As the Museum 

 Library does not at present possess a copy of the letterpress of 

 Jan's Icouoyrapliie generate des Ophidiens, I have taken this 

 opportunity of describing in detail this very distinct species. The 

 largest specimen examined measured nearly ten inches. 



DESCKIPTION OF A NEW TETRODON FROM 

 NEW SOUTH WALES. 



By J. Douglas Ogilby. 



Tetrodox aurantius, sp. nov. 



D. IL A. 10. P. 17. C. 9. 



The length of the head is three and two-fifths of the total length. 

 The eyes are situated at an equal distance from the tip of the 

 snout and the superior angle of the gill-opening, and their 

 diameter is one-half of the length of the snout, and four-sevenths 

 of the interorbital space, which is slightly concave. Nasal organs 

 pierced in the lower half of a bifid papilla, with only one opening 

 on each side. Dorsal profile broad. The distance between the tip 

 of the snout and the origin of the dorsal tin is four-sevenths of 

 the total length : the snout is two-thirds of the distance between 

 the posterior dorsal ray and tlie origin of the caudal tin, and is 

 equal to the height of the caudal pedicle immediately behind the 

 anal fin, which is situated entirely behind the dorsal :* the pectoral 

 fins are short and rounded : the caudal, which is also rounded, is 

 five-sevenths of the length of the head. The entire body and 

 head, with the exception of the lips, armed with long blunt spines 

 with a slightly nodular termination : these spines materially 



* The origin of the anal fin is perpendiculax-ly beneath a point behind 

 the dorsal fiuj and ia equal to the base of that fin. 



