344 DESCRIPTIVE CATALOGUE OF AUSTRALIAN FISHES, 



10C0. DlODON SPINOSISSIMUS, Cuv. 



Gunth., Cat. Fishes, VIII., p. 307. 



All the spines long, slender, with an anterior ridge between a 

 pair of grooves, not extending beyond a third of the length of 

 the spine. Upper part of the tail with a pair of spines besides 

 those on the sides. The roots of the spines are strong and long, 

 half as long as the spine or longer. There are about seventeen 

 transverse series of spines between the snout and dorsal fin. A 

 more or less distinct blackish band runs from one eye to the 

 other across the throat ; sometimes another vertical band in front 

 of the gill-opening. Upper parts blackish, base of each spine 

 with a black spot. Abdomen white. 



Port Phillip, West Australia (Castelnau). 



1061. DlODON XOVEiMACULATUS, CllV. 



Bleek. Atl. Ichth. Gynmod., p. 57, pi. 2, fig. 3.— Castelnau 

 Proc. Linn. Soc. N.S. Wales, p. 401. — Atopomijcterus Boragei, 



Steindacher. 



Port Jackson. 



1062. Diodon Blochii, Casteln. 



Proc. Zool. Soc, Victoria, Vol. I., p. 210. 



" Sea Hog " of Melbourne. 



Spines less numerous than in D. Injstriv. Head broad ; mouth 

 wide ; the interorbital space equal to two diameters of the orbit ; 

 five spines in the first row before the eyes ; in all eleven or 

 twelve transverse irregular series, all strong ; but particularly 

 the posterior ones. Dorsal fin 13; caudal 9, A. 13, P. 19. 

 Each spine has two long roots and an anterior ridge. Colour 

 pale green on the back, white ou the belly, at the root of each 

 spine there is a faint brown spot, and on the posterior part of the 

 body some purple blotches. The fins are green, and immaculate, 



