Akt. XII. — On Some New Marine Mollusca. 



By the Rev. J. E. Tenison- Woods, F.G.S., F.L.S., &c., 



Coekesp. Mem. Roy. Soc, Vict., 



Pees. Linn. Soc, N.S.W. 



[Communicated October 21st, 1880.] 



Two of the following shells were sent to me by Mr. J. F. 

 Bailey, of Swanston-street, Melbourne, who, by his interest 

 in the marine fauna of Victoria, has been able to add much 

 valuable knowledge on the subject. The shells are remark- 

 ably different from any hitherto known. One is a small 

 Purpura, which I have named after its discoverer. The 

 South Australian coast is not rich in purpuroid forms, and 

 the present species is distinguished for the thickness and 

 almost tropical aspect of the shell, as well as its approxima- 

 tion, in the form of the lips, to some of the Mazatlan 

 Purpuras. There is also a Fossaras, which is different from 

 a Tasmanian species, though of a similar character. 



Purpura Baileyana, n.s., T., acuminate ovata, sordide 

 et pallide oliva, crassa ; anfract. 5, conspicue, crebre 

 carinatis et creberrime longitudinaliter undulose lamellatis, 

 lineis incrementi sub-variciformibus, irregularibus et con- 

 spicuis ; spira brevi, conica ; ultim. anfr. reliq. valde 

 super ante : apertura alba, nitente ; labio lato, concavo; 

 labro solido, margine crenato, acuto, intus late sulcata ; 

 canali elongato, haud recurvo. 



Shell acuminately ovate, of a dirty pale olive colour, 

 thick ; whorls 5, conspicuously but closely carinate, and very 

 finely undulately lamellose lengthwise ; lines of growth 

 thick, irregular, and almost like varices ; spire short, conical, 

 the last very much exceeding the others in size ; aperture 

 white and shining ; lip broad, and concave on the columella ; 

 labrum solid, with a crenated margin and broadly sulcate 

 within ; canal a deep groove, rather long and not recurved. 

 Long. 30, Lat. 19, long, spire 8 mil. 



This shell belongs to an Australian family of Purpura?, 

 of which P. Flindersi of Adams may be considered the 

 type. I described two more species of the same general 

 habit in the " Proceedings of the Tasmanian Royal Society" 



