fl44 RECORDS OF THE AUSTRALIAN MUSEUM. 



summit. Protoconch small, slightly immersed, half turned over, 

 of an involute whorl and a half. Aperture pyriform, broadly 

 rounded below, constricted above. Columella margin reflected. 

 Plication prominent, entering obliquely. Beneath it a narrow 

 axial crevice. Length, 155 ; breadth, 45 mm. 



This appears near to a South Australian Pleistocene fossil, 

 Syrnola jonesiana, Tate. "^ I have no specimen of the fossil for 

 comparison, it is of smaller size with fewer whorls. 



Hah. — A single specimen (the type) from the Six Mile Beach, 

 Port Stephens, N. S. Wales, was obtained from Mr. J. Brazier. 

 Three others were collected by Mr. C. Laseron at Trial Bay, 



N. S. Wales. 



Odostomia revincta, sp. nov. 



(Plate xlii., fig. 25). 



Shell small solid, sub-cylindrical imperforate. Colour unitorm 

 bufif. Whorls two and a half, exsert, procumbent nuclear whorls 

 and three adult whorls parted by deeply channelled sutures. 

 Sculpture massive, on each whorl a chain of beads, about fourteen 

 to a whorl, above a simple solid peripheral rib. On the base 

 five spiral keels diminishing in descending order. Aperture 

 obliquely pyriform. Length, 1-35; breadth, 065 ram. 



This species appears to belong to the sub-genus Miralda.^'^ Its 

 striking sculpture readily distinguishes it from kindred forms. 

 To Miralda should also be transferred the Queensland shells I 

 described as PyrguJina umeralis, P. zea and P. sentx. 



Hab. — I obtained two specimens in 15 fathoms off the Palra 

 Islands, Queensland. 



Chileutomia couallina, sp. nov. 



(Plate xlii., fig. 26). 



Shell minute, sub-cylindrical, thin, smooth and glossy. Colour 

 white. Ou the decollated specimen under examination, five 

 whorls remain, these increase rapidl}' and are parted by inipiessed 



2 9 Tate— Trans. Roy. Soc. S. Austr., xxii., 1898, p. 70, p. 83, text 

 .fig. 



3 Dall and Bartsch— Bull. U. S. Nat. Mus., 68, 1909, p. 176. 



