190 Proceedings of the Royal Society oj Victoria. 



Obs. — This is the largest species found on Victorian shores. 



Hutton in his Manual of New Zealand Mollusca, p. 202, states 

 that his species Erato lactea may be the same as M. muscaria, 

 and by a recent letter from Mr. Henry Suter of Christchurch, 

 New Zealand, we are informed that this is the case. 



Marginella .tohnstoni, Petterd. 



1884. Marginella johnstoni, Petterd. Jour, of Conch., 

 No. 33, p. 143. 



Hab. — Brighton ; San Remo ; Sorrento. 



Obs. — As Petterd remarks in his note to the description 

 <' approaching M. muscaria and M. tasmanica," it never attains 

 to more than about one half of the length of the former species, 

 and is constant in size and form. Sowerby remarks of M. 

 muscaria " This species is remarkable for a tumidity near the 

 reflected lip on the back of the last whorl." This featui'e is not 

 prominent in M. johnstoni. 



Marginella tasmanica, T. Woods. 



1875. Marginella tasmanica, T. Woods. P.R.S. Tas., 



p. 28, No. 5. 

 1883. Marginella (Glabella) tasmanica, Tryon. Man. 

 Conch., vol. v., p. 23, pi. 7, f. 6. 

 Hab. — San Remo ; Port Albert. 



Obs. — May be readily distinguished from M. johnstoni by its 

 narrower form and more lengthy spire. 



Marginella formicula, Lamarck. 



1822. Marginella formicula, Lam. Auim. S. Vert., vol. 



X., p. 441. 

 1846. Marginella formicula, Sowerby. Thes. Conch., vol. 



i., p. 376, pi. 75, f. 41, 42. 

 1864. Marginella formicula. Reeve. Conch. Icon., vol. 



XV., pi. 8, f. 28, a, b. 

 1883. Marginella formicula, Tryon. Man. Conch, vol. v., 

 p. 23, pi. 6, f. 2. 

 Hab. — Portland (Maplestone). 



Obs. — This species is always plicate on the spire and on the 

 slioulder of the body whorl, a feature never present in either of 

 the three foregoing species. 



