apparently lie Mmself liad small doubt of the shell being 

 referable to M. octogonus ; besides his work contains (only a few 

 pages previously) the description of the Murex Angasi of Crosse. 



M (Ocinebra) pumilus. — A. Ad. ; Pro. Zool. Soc, Lond.^ 

 1863, p. 70. — Shell small, fusiform, imperforate, with distinct 

 rounded (about eight) varices extending the whole length of 

 the shell crossed by fine transverse lirse ending abruptly 

 on the outer lip ; whorls four to five rounded ; aperture oval, 

 attenuated anteriorly, inner lip smooth ; outer lip waved in 

 answer to the exterior lirae ; colour grey, but worn specimens 

 are a delicate flesh colour both outside and in ; length, 4^ ; 

 breadth, 3 lines. 



MacDonnell Bay, Eowler's Bay (Tate). Henley Beach, 

 Semaphore, Aldinga (Tate, Bednall). East side St. Vincent's 

 Gulf (Angas). Also received by me from Port Lincoln. 



In some specimens the transverse lir« are more prominent 

 than the varices, giving the shell at a superficial glance the 

 appearance of a different species. 



Both the M. pumilics of Kuster and M. pumilus of A. Adams 

 are figured in Tryon's work, the former in pi. 36, f . 413 and 

 the latter in pi. 38, f . 470, but neither of the figures really 

 represents the shell which I have here described. 



M. SEROTINUS — A. Ad. ; Pro. Zool. Soc, Lond., 1851, p. 268. 



One specimen obtained (alive) amongst the rocks at low 

 water spring tides, Aldinga Bay (Angas). Xot known to local 

 collectors. 



Mr. Tryon has been unable, from the meagreness of the 

 original description and the absence of any figure of the shell, 

 to place this species in any of the sub-generic groups ; and in 

 Tiis Manual of Conchology he has included it in a list of in- 

 determinate species. Mr. Sowerby, the same work states, 

 affirms that the shell is synonymous with M. Plainvillei, Payr., 

 a, Mediterranean form. 



G-ENUs Typhis, Montfort. 



Typhis Yatesi. — Crosse, Journ. de Conch., vol. xiii., p. 54, 

 pi. 2, f. 3. — " Shell imperforate, subquadrangular, elongately 

 oval, somewhat thin, translucid, white in colour, slightly 

 tinged with pink ; whorls six, each one bearing four flexuous 

 compressed jagged varices, terminating in a hollow sharp and 

 recurved spine when perfect, in the spaces between the varices 

 a prominent simple tube ; canal entirely closed from the 

 aperture to the base, somewhat large, slightly oblique and 

 recurved. Length fourteen millimetres, greatest diameter 

 seven. This species is easily distinguished from its congeners 

 by the elegant denticulation of the varices." — Crosse. 



Holdfast Bay, Semaphore, St. Vincent's Gulf (Angas, Tate, 

 Tor wood, Bednall). Stausbury (Tate). Somewhat rare. 



