136 Proceedings of the Royal Society of Victoria. 



from Watson's Bay, Sydney. Our shell is, however, apparently 

 of a more robust habit for its size, of fewer whorls, with distinct 

 ornament in the interstices, and judging by Mr. C. Hedley's figure,^ 

 the costae in ours are more numerous, and run straighter up the 

 shell. These differences seem to amply justify the treatment of 

 our shell as a distinct species, though it might be remarked that 

 the description of the Sydney shell by Mr. Brazier is a very 

 meagre one indeed, and some features noticeable in the figured 

 specimen appear to have had no consideration whatever by him. 

 Type in Mr. Gatliff's collection. 



Odostomia metcalfei, sp. nov. (PL XXL, Fig. 3.) 



Shell small, biconic, spire longer than the aperture, with a 

 somewhat obtuse apex. Heterostrophe embryo of about a whorl 

 and a half with immersed tip, the extreme obtuse apical portion 

 being so much smaller than the succeeding whorl that a lateral 

 aspect shows a distinct broad tabulation at this part of the shell. 



Whorls, three to four, somewhat convex with a distinct suture, 

 and a narrow margin running parallel to and a little below it, a 

 slight inclination to tabulation at the suture. Whorls faintly 

 longitudinally, striate, shell thin, translucent, and of a milky- 

 white colour. 



Aperture ovate, slightly effuse anteriorly, furnished on the 

 columellar side at the middle of the aperture with one strong 

 tooth-like plait ; outer lip thin. 



Dimensio7is. — Length, 2*5 mm., nearly; breadth, 1-25 mm.; 

 length of aperture, 1 mm. 



Locality — Flinders, Western Port (G. B. Pritchard). 



Observations. — Mr. Angas, in his list of South Australian 

 shells, published in the " Proceedings of the Zoological Society of 

 London for 1878," gives, on p. 866, the name of Odostomia 

 eburnea, and refers to it as a manuscript name of Metcalfe in the 

 British Museum, and as having been collected by Professor Tate 

 from Holdfast Bay. Our Victorian shell was named for one of 

 us by Professor Tate as O. eburnea ; but we have been unable 

 to find any figure or description of that species, and not being 



1 Proc. Linn. Soc. N. S. Wales, 1894, vol. ix., pi. xiv., f. 5. 



