1867.] MR. G. F. ANGAS ON AUSTRALIAN MOLLUSCA. 187 



This species, which is not uncommon in Wooloomooloo Bay and 

 in several localities near Port Jackson Heads, adhering to rocks at 

 very low tides, may be easily recognized by its short compressed 

 fronds, ranging along the varices and the outer lip, so as to form a 

 connected leaf-like frill. Length 2 inches. . 



Subfam. Fusing. 



7. CaNTHARUS (TrITONIDEA) ASSIMILIS. 



Biiccinum assimile, Reeve, Conch. Icon. {Buccinum) pi. 12. f. 90. 



Under stones at low water, Watson Bay. A pretty little species, 

 transversely ridged, and clouded with purplish brown. Length 

 7 lines. 



8. *Cantharus (Tritonidea) unicolor. 



Tritonidea unicolor, Angas, Proc. Zool. Soc. 1867, p. 1 10. 



A pale fulvous shell, longitudinally ribbed, and transversely ridged 

 throughout with raised striae. Under stones at very low spring tide 

 at Camp Cove, Port Jackson. Length 6 lines. 



9. *Trophon hanle\i. 



Trophon hanleyi, Angas, Proc. Zool. Soc. 1867, p. HO. 



The whorls of this species are broadly ribbed, sharply nodulous 

 in the middle, and encircled throughout with rough scabrous ridges. 

 It is of a uniform brownish colour, with a white line surmounting 

 the crown of the angular nodules. Under stones at low water. 

 Length 1 inch 2 lines. 



10. *Trophon v\wm. 



Troplwn paivce, Crosse, Journ. de Conch. 1864, p. 278, pi. 1 1, f. 7. 



A broadly ribbed species encircled with scabrous ridges, with the 

 canal somewhat produced and recurved ; toothed on the inner edge 

 of the outer lip, and deep purple or yellow within. Under stones. 

 Port Jackson. Length 1 inch. 



This species occurs also along the shores of Yorke's. Peninsula, 

 South Australia. 



Fam. Tritoniid^. 



11. Tritonium australe. 



Triton australis. Lam. Anim. sans Vert. ix. p. 625. 

 Murex tritonium- australe, Chemn. 



M. nerei (pars), Dillwyn ; Reeve, Couch. Icon. Triton, pis. 4, 5. 

 f- 12 G, 12 6. 



This noble species is to be met with on the muddy edges of rocks 

 and reefs laid bare at very low spring tides. Farm Cove, Vaucluse 

 Bay, and the vicinity of the Heads are its favourite localities. There 

 are two varieties of this species, the one tinged with violet, the other 

 witli orange. Length from 4 to .5 inches. A specimen obtained in 

 Middle Harbour measured upwards of 8 inches. 



