270 STUDIES ON AUSTRALIAN MOLLUSCA, xi., 



mm. high, 21-5 mm. long, and 5 mm. depth of single valve. It is 

 labelled "tenella, Romer, Australia, M.C." 



Dosinia subrosea Gray. 



Artemis subrosea Gray, Analyst, viii., 1838, p. 309; Id., Reeve, 

 Conch. Icon., vi., 1850, PI. iv., fig. 9. 



Dosinia coryne A. Adams, 1856, another unfigured species, has 

 been reduced by Tate and May to a synonym of D. sculpta Hanley, 

 1845. But careful study of the type of D. coryne in the British 

 Museum, led me to regard it as a young specimen of D. subrosea 

 Gray. This New Zealand species is not included in Tasmanian 

 catalogues, but it was independently reported by Legrand* from 

 Tasmania. 



Again, I saw, at South Kensington, two specimens, evidently the 

 types, but not so marked, of "Dosinia crocea Deshayes, Flinders 

 Island, Joseph Milligan, Esq." Except that 0. crocea is yellow on 

 the lunule and escutcheon, and D. coryne is there uncoloured, the 

 two shells are alike. D. grata Deshayes, as Tate mentioned,! has 

 much coarser sculpture than D. crocea. 



Macrocallista planatella Lamarck. 



Cytherea planatella Lamarck, Anim. s. vert, v., 1818, p. 565. 



To this name is attached a long history of error. It is curious 

 that none of the European authors, who have dealt with the species, 

 should have consulted the type. 



In the Lamarckian collection of Geneva are still preserved three 

 specimens, types, with the author's label. On seeing these, it was 

 at once clear to me that M. planatella is not Cytherea diemenensis 

 Hanley, as has been frequently stated, following the suggestion of 

 Mr. E. A. Smith.} 



The real planatella is not even a Tasmanian shell, as Lamarck's 

 habitat, "Terre de Van Diemen," indicates. But the collectors of 

 Baudin's Expedition misreported, besides this, a number of tropi- 

 cal West Australian species (probably from Shark Bay) as Tas- 



* Von Martens, in Hutton, Manual N. Z. Mollusca, 1880, p.202. 

 tTate, Trans. Roy. Soc. S.A. xxxi. 1897, p.47. 

 % Smith, Chall. Exped. Zool. xiii. 1885, p. 13*. 



