126 FISH AND PISH-LIKE ANIMALS OF N.S.W., 



363c. C. hippocrepis. Variable Leather-jacket. Balistes hippocrepis 

 Quoy & Gaimard, Voy. Uranie, Zool., 1824, p. 212. Aleuterius varia- 

 bilis Richardson, Ichtb. Erebus & Terror, 1846, p. 67, pi. 52, 1-7 (PL 

 xlii.). 

 A common species, altering considerably in both form and colouration with 

 growth. Length 18 inches. 



C. freycineti Quoy & Gaimard, was originally described from Mauritius, 

 but Hollard, Ann. Sci.Nat. (4) ii., 1854, p. 336, pi. 12, 3, later reported it from 

 New South Wales. The species has not since been recognised from Australia, 

 however, and it seems probable that his New South Wales examples were in- 

 correctly identified as C. freycineti. He noted their similarity to C. variabilis. 



363d. C. guntheri. Tjooth-brush Leather-jacket. Monacanthus gun- 



theri Macleay, P.L.S. N.S.W. vi., 1881, p. 314. M. browni McCoy, 



Prodr. Zool. Vict. dec. xiii., 1886, pi. 124 (PI. xlii.— not Aleuterius 



broivnii Richardson). 



A southern species, characterised by the possession of a remarkable brush 



of long setae on each side. Length 10 inches. 



363e. C trachylepis Yellow-finned Leather-jacket. Monacanthus 

 trachylepis Gunther, Brit. Mus. Cat. Fish, viii., 1870, p. 248 (PI. xlii.). 



Occurs in inlets, sometimes in schools. Length 16 inches. 



The specimen recorded by Castlenau from Port Jackson as Monacanthus 

 rudis, P.L.S. N.S.W. iii., 1879, p. 399, had 38 dorsal rays and other characters 

 of C. trachylepis, and was probably referable to this species. As no other 

 authors have recognised C. rudis from New South Wales, it seems probable that 

 the species does not occur here. 



363f. C. setosus. Velvet Leather-jacket. Monacanthus setosus Waite, 

 Mem. Austr. Mus. iv. 1, 1899, p. 91, pi. 16. C. setosus Waite & 

 McCulloch, Tr. Roy. Soc. S. Austr. xxxix., 1915, p. 472, pi. 14. 



Common in deep water along the coast, and frequently taken by trawlers. 

 Length 11 inches. 



363g. C. spilomelanurds. Balistes spilomelanurus Quoy & Gaimard, Voy. 



Uranie, Zool., 1824, p. 217. Aleuterius paragaudatus Richardson, Ichth. 



Erebus & Terror, 1846, p. 66, pi. 39, 1-4 (PI. xlii.). 

 Common around wharf-piles and on weedy flats in Port Jackson. Length 

 5 inches. 



363h. C. mactlosus. Aleuterius maculosus Richardson, Ichth. Erebus & 



Terror, 1846, p. 67, pi. 39, 5-7. 

 Found commonly with the preceding species, of which it is probably merely 

 a sexual form. Length 5 inches. 



363i. C. prasinus. Monacanthus prasinus Castlenau, P. Zool. Soc. Vict. 



i., 1872, p. 205. 

 This species, described from a specimen under 3 inches long, has not been 

 recognised by anybody but Castlenau. 



363j. C. mosaicus. Mosaic Leather-jacket. Monacanthus mosaicus Ram- 

 say & Ogilby, P.L.S. N.S.W. (2) i., 1886, p. 5. C. mosaicus McCulloch. 

 Biol. Res. Endeavour iii. 3, 1915, p. 170, pi. 37, 1-2. 



A deep and smooth skinned species, ornamented with mosaic-like colour- 

 marking. Length 16 inches. 



