1871.] MR. G. F. ANQAS ON AUSTRALIAN MOLLUSCA. 89 



10. Voluta nucleus, Lam. Anim. sans Vert. vol. x. p. 405 ; 

 Reeve, Conch. Icon. Voluta, pi. 18. f. 41. 



Newcastle, New South Wales {Brazier). 



Fam. MitridjE. 



11. Mitra glabra, Swains. Exotic Conch, pi. 24. 

 Botany Bay. Occurs also in South and Western Australia. 



12. Mitra variabilis, Reeve, P. Z. S. 1844, p. 1/5. 



A species of a brownish-olive colour, with a zone of interrupted 

 grey markings near the middle of the last whorl, and a few irregular 

 flakes of the same colour descending from the sutures. The whorls 

 are more or less encircled by finely punctured striae. Length \\ inch. 



Under stones at Double Bay (Port Jackson) and Brisbane Water 

 (Brazier). 



The shells under the above name in the Cumingian Collection in 

 the British Museum are identical with M. cylindrica. I cannot find 

 Reeve's original type ; but the specimens sent me by Mr. Brazier 

 agree with his description of M. variabilis. 



Subfam. Columbellin^e. 



13. Columbella interrupta, Angas, P. Z. S. 1865, pi. 11. 

 f. 9, 10. 



This beautiful little species may be known by its two green finely 

 pencilled and scalloped bands. 



The type specimen was dredged by me at Yorke's Peninsula, in 

 South Australia. Mr. Brazier has recently obtained it in Port 

 Jackson. 



14. Columbella (Mitrella) bicincta, Angas, P. Z. S. 1871, 

 PL I. f. 3. 



A smooth fusiform species, distinguished by having two opaque 

 white bands articulated with brown above and below the sutural 

 margin. 



Dredged in Watson's Bay, Port Jackson. 



15. Columbella (Mitrella) attenuata, Angas, P. Z. S. 1871, 

 PI. I. f. 4. 



An elegant little species, remarkable for its very elongated form, 

 and its simple bands of light and dark brown. 



Dredged near the " Sow and Pigs," Port Jackson (Brazier). 



16. Columbella (Anachis) atrata, Gould, Otia, p. 131. 



In my "List of Port-Jackson Shells" (Part I. No. 55) I erro- 

 neously gave the name C. lenliginosa, Hinds, to this species, which 

 is a very distinct shell, and comes from the Gulf of Nicoya. C. len- 

 tiffinosa must be cancelled as an Australian species. 



C. atrata is found under stones at Mossman's Bay, Port Jackson. 



