76 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



Althougli Menke in his work has assigned to west Australia other 

 species of Mollusca which occur on the south coast, this is hardly 

 a sufficient reason for concluding that he has done so in the present 

 instance. 



The specimens seen and figured by Klister were from the collection 

 of Dr. Pfeiffer, who very likely obtained them from Menke himself ; 

 and three examples in the Cuming Collection, which belong to this 

 west coast form, are labelled, in Pfeiffer's handwriting, " Trunc. 

 striatula, Menke." It is not at all improbable that Cuming received 

 these direct from Pfeiffer, and that they also form part of the original 

 Menkean series. 



Young shells, consisting of about six "whorls, are of a rich brown 

 colour, with the exception of the two apical volutions, which are 

 pellucid white. 



2. CoxiELLA CONFUSA, uom. nov. 



Blanfordia striatula {M.eTLk.e) : Angas, Proc. Zool. Soc, 1863, p. 523 



(non Menke). 

 Pomatiopsis striatula (Menke) : Adcock, Hand-List Moll. S. Australia, 



p. 7 {non Menke). 

 Blanfordia striatula (Menke) : Cox, Mon. Austr. Land-Shells, p. 95, 



pi. XV, figs. 13-1 3 J {non Menke). 



Sal). — Adelaide, South Australia (Cox); salt lakes, l?orl<e's 

 Peninsula (coll. Sykes) ; salt-water lake, Port Phillip and Sand- 

 ridge, Hobson's Bay, Yictoria (Brit. Mus.) ; Lake Corangmite, 

 Geelong (coll. Sykes). 



This species is less elongate than C. striatula, and differs also in 

 colour and the slightly more convex whorls. The aperture is never 

 so brightly coloured as in the west coast species, which at times 

 attains dimensions never reached by the present form. The peristome 

 is generally not so white, and usually more pronouncedly continuous, 

 in some specimens being almost, and in others quite, free from the 

 body-whorl. 



3. CoxiELLA GiLESi (Angas). 



Palud/inella Gilesi, Angas: Proc. Zool. Soc, 1877, p. 170, pi. xxvi, 



. fig- 2- . . 



Blandfordia [sic] Stirlingi, Tate : Trans. E. Soc. South Australia, 



1894, vol. xviii, p. 196, 



Blandfordia [sic] Gilesii, Tate: op. cit., vol. xxi (1897), p. 42. 



Hah. — Shores of Lake Eyre, South Australia (Angas) ; Lake Calla- 

 bonna, South Australia (Tate). Var. mammillata : on the shore of 

 a dry salt lake near tannine, Murchison Goldfield, "VV. Australia; 

 also Lake Callabonna (Tate). 



The operculum is of concentric growth, as in C. confusa, not 

 " paucispiral " as described by Angas. It is thin, horny, deeply 

 concave, and marked with fine lines of increment. 



