471 



Lnc. — Doubtful Island Bay, South-western Australia;: 

 20-25 fathoms. 



"Simplon" Stations 3, 4, 6, and 7, 80-140 fathon^s.. 

 Great Australian Bight. 



Comparing K. nigrofasckiturn with K. laeve^'^'^) the two 

 species are seen to differ in the following characters : — In 

 K. laeve the hinder margin of the cranial armature is nearly 

 straight, whereas in our new species it is interrupted by two 

 backward projections. The surface of the exposed bones is 

 sculptured into reticulating ridges in K. laeve, and into 

 tubercles in A", nigrofnsciatuin . The postero-internal portion 

 of the orbit of K. laeve presents a small hiatus, while it is 

 entire and rounded in the new species. The dark cross-bars 

 are much darker in K. nigrofasciatum than in K. laeve, and' 

 are differently arranged on the head ; in the latter the pre- 

 opercle is largely covered by a dark area, and there are no 

 dark marks radiating from the eye, while the opercle is 

 without miarking; in li. nigrofasciatum three black lines 

 radiate from the eye, the preopercle is almost without mark- 

 ing, and the upper portion of the opercle is deep black. 



K. giganteum, Haast.,'^' is readily distinguished from 

 both K. laeve and K. riigi^ofasciatum by its colour-marking 

 and by the granular sculpture of the cephalic armature. The 

 three may be identified by the following key: — 



a. Head and body with broad dark cross-bars; 

 no white stripe along the lateral line. 

 h. Three dark bars radiating from the eye; 



no large dark blotch on tjie preopercle nigrofasciatum 

 })h. No bars radiating from the eye; a large 



dark blotch on the preopercle laeve 



aa. Head and body marbled, without cross-bars; 



a white stripe along the lateral line ... giganteum 



K. laeve is recorded from New South Wales, Victoria, 

 and Tasmania. We have a specimen from 37 fathoms off the 

 Investigator Group, South Australia. 



i2)JJranoscopus laevis, Bloch and Schneider: Syst. Ichth... 

 1801, p. 47, pi. viii. ; Cuvier and Valenciennes: Hist. Nat. Poiss., 

 iii., 1829, p. 319. 



Kathetostoma laeve, Giinther : Cat. Fisli, Brit. Mus., ii.,. 

 1860, p. 231; Klunzinger : Arch. Naturg., xxxviii., 1872, 

 p. 28, and Sitzb. Akad. Wiss. Wien,., Ixxx., 1879, p. 369; 

 Castelnau : Proc. Zool. Soc, Vict., i., 1872, p. 91; Macleav : Proc. 

 Linn. Soc, N.S.W., v., 1881, p. 562; Johnston: Proc. Rov. Soc.,. 

 Tasm., 1882 (1883), p. 115, and 1890 (1891), p. 33; Waite: Mem.. 

 Aust. Mus., iv., 1899, p. 113. 



(3)Haast: T.N.Z.I., v., 1873, p. 274, pi. xvi., fig. 2. 



