BY J. DOUGLAS OGILBY. 19 



Vertical fins rounded, the length of the dorsal some- 

 what more than that of the anal, which is inserted almost 

 wholly behind the dorsal, and about 2-50 in their respective 

 heights ; caudal fin rounded, the peduncle deeper than 

 wide : pectoral undulous, the upper angle slightly produced, 

 the lower broadly rounded, the width of its base more than 

 the eye-diameter. 



Uniform olive-brown, shading into lavender or dull 

 white below ; lower part of the sides and entire under surface 

 of the body, with small black spots ; a black vertical band 

 below the eye, a second in front of the gill-opening, and a 

 thitd below the tip of the appresred pectoral. Fins 

 uniform gray. 



Total length 290 millim. 



Coast of South-Eastern Queensland. 



Described from three Moreton Bay specimens, 

 measuring from 200 to 290 millimeters. 



Type in the A.F.A.Q. Museum, to which it was pre- 

 sented by Mr. Harry Myers, of Brisbane, after whom I 

 have great pleasure in naming it. 



This species is easily distinguishable from D. punc- 

 iulatus* by the small size of the abdominal spines, which 

 are much shorter than those of the back and sides, and 

 from D. jaculiferus'f by the conspicuous mid-frontal spines, 

 the absence of the elongate pectoral spines, and the 

 formula of the vertical fins. 



CHILOMYCTERUS GRANDOCUl^IS Sp. nOV. 



D. 12 ; A. 11 ; P. 21. Width of body 2-25, depth of 

 body, 2-50, length of head 2*60 in the length of the body. 

 Length of snout 2-85, diameter of eye 2-20, width of inter- 

 orbit 1-85, height of dorsal fin 1-80, of anal 1-95, length of 

 caudal 1-35, of pectoral 1-80 in the length of the head. 



Snout linear, rest of head convex ; mouth below the 

 level of the eye ; head as wide as long and two fifths wider 

 than deep, its length 1-30 in the trunk. Eye large, 

 \\dthout free lid ; interorbital region flat, the supraciliary 

 edges slightly raised. Nasal tentacle compressed and 

 simple. A short strong turbinal spine ; a much smaller 

 preorbital spine ; frontal region with a single median spine, 

 its point reduced to a blunt tubercle, or more rarely a pair 



* Kaup, Arch. f. Nat., 1885, p. 230 : Cape Seas and Mauritius, 

 t Diodon jacuUferua Cuvier, M^m. Mus., 1818, p. 130. 



