FISHES.-MCCULLOCH. e-s 



Genus C.i-:sioperca, Castelnau. 



Cesioperca rasor, Richardson. 



Red Perch. 



Serranus rasor, Richardson, Proc. Zool. Soc, 1839, p. 95, 



and Trans. Zool. Soc, iii., 1849, p. 73, pi. iv., fig. i. 

 Anthias rasor, Giinther, Brit. Mus. Cat. Fish., i., 1859, p. 93; 

 id., Macleay, Proc. Linn. Soc. N.S.Wales, v., 1881, 

 p. 311; id., Johnston, Proc. Roy. Soc. Tasm., 1882 

 (1883), P- 109; Jd., Lucas, Proc. Roy Soc. Vict., 2 ser., 

 ii., 1890, p. 17. 

 Ccesioperca rasor, Castelnau, Proc. Zool. Soc. Vict., i. , 1872, 

 p. 49; id., Boulenger, Brit. Mus. Cat. Fish., 2nd ed., i., 



1895, P- 3^3- 

 Anthias rasor var. extensus, Klunzinger, Arch. fur. Nat., 



xxxviii., i., 1872, p. 17. 

 Anthias extensus, Klunzinger, Sitzb. Ak. VViss. Wien, Ixxx , 



i-' P- 339, Pl- ii- 

 Ccesioperca extensa, Boulenger, Brit. Mus. Cat. Fish., 2nd 



ed., i., 1895, P- 313- 

 The "Endeavour" specimens show that the colour markings 

 of this species are subject to great variation. The black mark 

 on the side may be large or only moderately developed, or 

 altogether absent. One specimen shows a large black spot 

 on one side and none on the other, while in a second example 

 it covers fifteen scales on the left side and two on the right. 

 The blue bands around the eye and on the body are well 

 developed in some and wanting in others. Having counted 

 fifteen specimens I find the number of scales and fin-rays to 

 be as follows: — D. x.-xi./i9-22 ; A. iii./9-io; P. 14-15; \^ 

 i./s; C. 15; 1. lat. 49-55. 



In separating \ns Anthias extensus fromT. rasor, Klunzinger 

 considered that it had a more slender body, longer pectorals, 

 smooth preorbital, and lacked the characteristic markings of 

 Richardson's species. The above notes prove that the latter 

 character has no specific value, while Boulenger shows that 

 the length of the pectorals does not differ in the two. Castel- 

 nau described the preorbital as strongly ciliated, but in all 

 my specimens it is either entire or somewhat crenulate, and 

 therefore agrees with both Klunzinger's and Richardson's 

 figures. I find that the depth of the body varies from 2*75 to 

 3'o in the length to the hypural, so that but one character, 

 the smaller scales, is left to distinguish extensus. Klunzinger 

 counted 62-63 scales on the lateral line, but it seems that he 

 included some unperf orated ones on the base of the tail, as. 

 his figure, which is bythat most accurate artist, Konopicky, 

 shows onlv 58. 



