McCULLOCH AND WaITE — FiSHES FROM SnUTH AUSTRALIA 63 



Affinities. Dcrmatopsis is allied to DiucinatichiJiys Bleeker, but diiifers in 

 its squamation, the head being wholly naked, and the anterior body-scales widely 

 spaced. 



DERMATOPSIS MULTIRADIATUS sp. nov. 



I'latc V. tig. 4. 



D. 102-104: A.62-65 : P.19-20: \'.i: C.15. 



Depth 7 -04 in the length to the hypural joint ; head 5 -4 in the same : eye 2 

 in the snout and 1 6 in the interorbital space: this is slightly less than the snout, 

 which is 4 '5 in the head: breadth between pectoral bases 1-4 in the depth: 

 posterior dorsal rays higher than those of the anal, 2-2 in the head: pectorals and 

 ventrals of equal length. 1 'S in the head. 



Head naked, comiircssed. the snout obtuse : eye distinct, covered with mem- 

 brane : nostrils are large openings in broad tubes : '■iiout with convoluted dermal 

 lobes surrounding large pores above the upper lip : lower lip fringed, several large 

 openings below the mandibular symphysis. A series of spaced open pores 

 extends from the preopercular angle on to the side of the mandible ; a minute 

 tubular pore on the nape behind tlie eyes, and another at the shoulder : maxilla 

 extending backward far behind the eye ; its greatest breadth is less than the length 

 behind the marginal spine : opercular spine well developed : a narrow band of 

 \illiform teeth in each premaxillar)', those near the symi)liysis slightly enlarged, 

 and sonic larger dejiressible ones behind them : a narrow villiform band in the 

 maxilla, and an inner series of enlarged spaced teeth extending backwards : an 

 angular series of jiointcd teeth on the vomer, the outermost enlarged : palatines 

 with three rows of similar teeth, the inner series being largest: tongue obtusely 

 pointed, the tip free: isthmus narrow, the gill-membranes sometimes forming a 

 narrow fold across it. 



Body covered with minute cycloid scales, which are juxtaposed posteriorly, 

 but spaced anteriorly ; they commence behind the pectoral fin on the middle of 

 the sides, and gradually expand backward towards the dorsal and anal surfaces. 

 Lateral line very indistinct, and consisting of minute tubules arising from a linear 

 canal : this cur\es upwards from the shoulder and descends to the middle of the 

 side some distance behind the pectoral fin. Male urinogenital aperture large, 

 with three horny clas])ers. two being directed outward at right-angles from their 

 bases, and the median one backward : the latter liears a procurved spine at its tip. 



Pins. Dorsal commencing o\cr the middle of the pectorals, and increasing 

 gradually in height backward: the last rays united with the extreme base of the 

 caudal by membrane: anal similar to the dorsal, its origin behind the middle of 

 the total length: pectoral broadly rounded, and reaching less than one-third of 



