BY J. DOUGLAS OGILBY. 181 



may have sustained some injury which has resulted in a 

 partial or even permanent arrest in the development of 

 the sexual organs, which would at once account for the 

 possibly abnormal decrescence in the size which these 

 have attained in our specimen, and being barren, for its 

 increased size. 



Stegostoma, Muller and Henle (1837). 

 ■^26. S. TiGRiNUM, Gmel., sp. Cape York, Q. (Austr. Mus.J. 



Parascyllium, Gill (1861). 



27. P. VARiOLATUM, Bum., sp. Tasmania. As with the two 

 succeeding species this Dog-fish appears to be individually 

 scarce, since from his short note on the subject it does not 

 seem that Mr. Johnston has ever met with a recent 

 example. I think it highly probable that the cause of 

 this apparent scarcity will be found to be due to the 

 ordinary habitat of the genus being in deep water, or at 

 least in water of such a depth as to exceed the limits to 

 which the professional fishermen of these coasts confine 

 themselves. 

 *28. P. COLLARE, BJcO. Outside Port Jackson, N.S.W., in seventy 

 fathoms (Austr. Mus.); vide P.L.S. N.S.W. iii. (2) 1888, 

 p. 1310, 



29. P. NUCHALE, McCoy. Port Phillip, Vic. (McCoy), scarce. 



Chiloscyllium, Miiller and Henle (1837). 



30. C. OCELLATUM, Gmd., sp. Port Jackson, N.S.W. (Austr. 



Mus.), rare. North coast of Australia. Port Moresby, 

 New Guinea (Austr. Mus.), common. Richardson's C. 

 trispeculare is merely a variety of this species. 

 ■^31. C. PUNCTATUM, M. <t H. Port Darwin, North-western 

 Australia (Klunzinger). 

 32. C. MODESTUM, Gtith. East coast of Australia, common. 

 The " Brown Dog-fish " of Port Jackson. 



