BY C. HEDLEY. 301 



In the British Museum, a Tasmanian example of P. aulacoglossa 

 is misnamed tasmanica Woods, an error supported by Pritchard 

 and GatlifL* But Tenison Woods, well acquainted with the identi- 

 fication of chemnitzii by Angas, would not have considered it as 

 new. Then tasmanicus is present as described from the south of 

 Tasmania, where aulacoglossa is absent; it is said to be 16 mm. 

 across, but aulacoglossa is twice or thrice as much; tasmanicus has 

 a spiral groove on the pad, running along the edge, the transverse 

 furrow of aulacoglossa would not be so described; tasmanicus has 

 the umbilicus partly filled up, "obtecte," but that of aulacoglossa is 

 open. Then aulacoglossa would not be mistaken for a small form 

 of baconi or plumbea, while these comparisons are natural for tas- 

 manicus. 



In the Solanderian region, a variety occurs of the didymus 

 group, which, in the British Museum, is shown as N. bicolor Phil, f 

 from Torres Strait. I find it to range south to Port Curtis. 



POLINICES NUXCASTANEA Martyil. 



Neritd nuxcastanea Martyn, Univ. Conch., iii., 1786, PI. 106. 



Natica maura Lamarck, Encycl. Meth., 1816, Explanations of PI. 

 453, fig. 4. 



Polinices maura Shirley, Proc. Roy. Soc. Queensland, xxiii.,1911, 

 p. 98. 



As "Mammilla maura Lamarck," three specimens, taken by 

 Jukes on Darnley Island, are shown in the British Museum. Un- 

 familiar with synonymy, Shirley has mentioned it as new to 

 Queensland, under Lamarck's name. But, by the prior name of 

 Martyn, it was already included in the catalogue of marine mol- 

 lusca of Queensland. 



Ancilla cingulata Sowerby. 



Ancillaria cingulata Sowerby, Species Conch, i., 1830, Ancil- 

 laria, p. 6, figs. 36, 37. 



Ancillaria tricolor Gray, Append. Voy. Fly, ii., 1847, p. 357, PL 

 i., fig. 4; Not A. tricolor Sowerby, Thes. Conch, iii., 1859, p. 63, PI. 



* Pritchard and Gatliff, Proc. Roy. Soc. Vict., xiii., 190U, p. 191. 

 tPhihppi, Couch. Cab., ii., 1852, p. 43, Pl.vi., f.4. 



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