700 STUDIES ON AUSTRALIAN MOLLUSCA, xii., 



type in the National Museum, Washington, kindly forwarded by 

 Dr. P. Bartsch, are here presented. 



Macrocallista SOPHI.E Angas. 



Cytherea sophice Angas, Proc. Zool. Soc, 1877, p 176, PI. 26, 

 fig.23. 



This species, described from the neighbourhood of Sydney by 

 Mr. G. F. Angas, was afterwards relegated to the synonymy of 

 Cytherea hebrcea by Mr. E. A. Smith.* 



Discussing the Oriental distribution usually assigned to C. 

 hebrcea, Dr. H. Lyngef notes that certain writers have remarked 

 it ''from the VV^est Indies, but these records are due to its having 

 been confounded with Cytherea varians Hanley." 



The actual type of Cytherea hebrcea with Lamarck's autograph 

 label is still preserved in the Geneva Museum. On examination, 

 I found this to answer fairly to C. varians as expressed by 

 Romer's figs.4, 4a, 46 (but not 4c) of Plate xxviii., of the Venus 

 Monograph, i., 1867, but Lamarck's shell is a little more inflated 

 and a little higher in proportion to length. Whereas the figures 

 given for C. hebrcea by Sowerby, Thes. Conch., ii., 1851, Pl.cxxxiv., 

 figs. 14 3, 144, 148, are quite different, both in form and colour, 

 from the type. 



The conclusion seems to be that Krebs, Morch, Simpson and 

 Dall were correct in identifying an American species, ranging 

 from Cape Hatteras to Barbadoes, as C. hebrcea; that C. varians 

 is a synonym of that species, and that the Australian shell may 

 resume the name given to it by Angas. 



Lepton concentkicum Gould. 

 (Plate Ixxvii., fig.l.) 

 Lepton concentricum Gould, Proc. Bost. Soc. Nat. Hist., viii., 

 1861, p. 33; Id., Tenison- Woods, These Proceedings, ii., 1878, 

 p.260. 



An illustration of this hitherto unfigured species, from the type 

 in the National Museum, Washington, is here supplied by the 



♦Smith, Chall. Zool., xiii., 1885, p. 138. 

 t Lynge, D., Kgl. Danske Vidensk. Selks. Skrifter, 7 ser., Vol. v., 1909, 

 p.lSl' 



