Waite and Hai.e — LoPHonKAxcHiATE Fishes 317 



witli appciidau-fs near the teniiinatioii of the tail: (b) long, compressed, flexible, 

 lanceolate (some of them spatulate in old examples), without appendages and 

 iifien with finely serrated edges: these occur in ])airs along the edges of the dorsal 

 surface as far as the second third of the dorsal fin and singly along the middle 

 of the \entral surface between the neck and the vent. Three pairs of very broad 

 compressed spines on the anterior part of the ventral surface of the tail: (c) 

 small shar]) spines, situated singly along the lateral line and terminating a short 

 distance beyond the \ent : these ma\' be somewhat scattered and in old examples 

 some of them are spatulate with serrated edges: another series along each of the 

 lateral alidominal edges. Tail about half of the total length. Anal fin as high 

 as the eye. The egg-bearing area occupies the ventral and lateral surfaces of 

 Ihree-fourtbs of the length of the tail: each egg is about 4 mm. in diameter. 

 Adult examples are about 300 mm. in total length. 



C'liloiirs. Pale brown in spirit, darker above: sides with a white or silvery, 

 dark-edged stripe across each bodv scute: foliaceous appendages dusky. 



Hal'. .South Australia. 



ACENTRONURA Kaup. 1S.S6 (gracilissima). 



ACENTRONURA AUSTRALE sp. nov. 

 Fig. 53- 



D.15: .\nnuli 124-38: sub-dorsal aniuili 3 + 1 : brood annuli 0+ 1 i. 



I'Cinalc. .Snout 20 in the head: eye 1 '8 in the snout and 5-3 in the he;i(l : 

 head 20 in the trunk and 6 -S in the total length: trunk 20 in the tail. 



Snout shorter than the postorbital portion of the head : supraorbital spines 

 l.ilunt, triangular, each bearing a tufted filament longer than the snout and con- 

 N'erging before the eves where \\\c\ form a small spike: occiput elevated, much 

 com])ressed, a tufted filament on its summit and one on each side of the base 

 posteriorly: a low nuchal ridge, highest anteriorly: opercles smooth, without 

 .■•pines or ridges. I'.ody deepest anteriorly, being nearly twice as deeji as wide: 

 ridges rather fee])l\- raised, but the angles well defined: the upper liodv riilge 

 terminates below the middle of the dorsal fin and above the origin of the caudal 

 ridge, which forms the upper angle of the tail: the tail is quadrangular in section: 

 median lateral ridge continuous with lower caudal ridge: lower lateral and ventral 

 ridges terminate <-it the vent : a very feeble spine at the intersection of these ridges 

 with the faintly raised margins of the scutes : about every third spine bears a 

 tufted filament. Rase of dorsal fin elevated: a minute anal fin. 



Descrilied from an example 54-5 mm. in total length from St. Vincent Gulf. 



