FTSHES. — MCCULLOCH. 137 



Genus Thysanophrys, Ogilby. 



Thysanopheys cirronasus, Richardson. 



Platycephalus cirronasus, Richardson, Voy. " Erebus & Terror,'' 

 Fishes, 1848, p. 114, pi. li., fig. 7-10. Id., (Mutter, Brit. 

 Mus. Cat. Fish., ii., 1860, p. 186. Id., Macleay, Proc. 

 Linn. Soc. N.S. Wales, v., 1881, p. 586. Id., Stead, Ed. 

 Fish. N.S. Wales, 1908, p. 113. 



D. viii.-ix. 11-12; A. 11-12; P. 20-21 ; V. i. 5 ; C. 10-11 ; 

 lateral line to hypural 53-54. Head 2|-2| in the length to the 

 hypural, with very large spines and smooth upstanding ridges 

 which terminate in spines ; intermediate areas not rough or 

 spiny, covered with fleshy skin. Traces of some very rudimen- 

 tary scales on the operculum, none on the preoperculum. Eye 

 1|-1| in the snout, usually with a small tentacle above. Interor- 

 bital space deeply concave, half, or less than half the length of 

 the eye. Maxillary reaching to below the anterior third or 

 nearly to the middle of the eye. Bony stay of cheek without 

 spines ; preoperculum with two stout, but short subequal spines. 

 Teeth minute, subequal, inner ones a little larger than the 

 others. They form a broad band on the upper jaw, and a 

 narrower one on the lower; two short, parallel bands on the 

 vomer, and a long narrow one on each palatine. 



Scales before the dorsal fin rudimentary ; those of the lateral 

 line enlarged and thickened but not spiny. Caudal rounded. 

 Colour reddish with darker marbling ; some dark patches at the 

 bases of the dorsal fins which tend to form cross-bars. Fins 

 with violet lines and spots. 



Loo. — This species is only known from New South Wales. I 

 have examined seven specimens from near Sydney and one from 

 Bulli. The largest is 385 mm. long. 



Genus Insidiator, Jordan fy Snyder. 



Insidiator, Jordan & Snyder, Proc. U.S. Nat. Mus., xxiii., 

 1900, p. 368 (Platycephalus rudis, Giinthcr). 



Grammoplites, Fowler, Journ. Ac. Nat. Sci. Philad., xii., 1904, 

 p. 550 (Platycephalus scaler, Linnaeus). 



Thysanophi/rys, Jordan & Richardson, Proc. U.S. Nat. Mus., 

 xxxiii., 1908, p. 631 (not of Ogilby). 



This genus differs from Thysanophrys in having no enlarged 

 and thickened scales on the lateral line, and in having scales on 

 the head and nape. The definition given by Jordan & Richardson 

 under Thysanophrys leally applies to Insidiator. 



