BY C. HEDLEY. 327 



deau, though the British Museum specimens of that protean species 

 do not exactly correspond. 



Murex acanthoptekus Lamarck. 



Murex acanthopterus Lamarck, Aiiim. s. vert., vii., 18*22, p. 105; 

 Encyl. Meth., PL 417, fig. 2. 



Murex saibaiensis Melvill & Standen, Journ. Linn. Soc, Zool. 

 xxvii., 1899, p. 161, PI. x., fig. 1. 



In the British Museum is one specimen marked as the type of 

 M. saibaiensis, from Torres Straits, which corresponds to others 

 labelled M. acanthopterus. And in the Geneva Museum, I found 

 Lamarck's type of M. acanthopterus still preserved. Comparing 

 the shell of Lamarck with the illustration of Melvill and Standen, 

 I found that the shell from Torres Straits was half the length of 

 Lamarck's type, but otherwise identical. By Lamarck's name, the 

 species was previously reported from Torres Strait by the Chal- 

 lenger Expedition. The name should be ascribed to Lamarck, not, 

 as is sometimes clone, to Schroeter. 



Trophon petterdi Crosse. 



Trophon petterdi Crosse, Journ. de Conch., xviii., 1870, p. 303; 

 xix., 1871, p. 324, PL 12, fig. 2; Id., Pritchard & Gatliif, Proc Roy. 

 Soc. Vict., x., 1898, p. 256 ; Id., Sykes, Proc. Malac. Soc, iv., 1900, 

 p. 39. 



Murex pettardi Sowerby, Thes. Conch., iv., 1879, p. 48, PL 403, 

 fig. 255. 



Under the genus Murex, I found, in the British Museum, two 

 shells labelled "Pettardi Brazier, Tasmania. From the Colin, of H. 

 Adams, acquired 78/1/28." Mr. E. A. Smith agreed that this was 

 the original of Sowerby's figure. This, as Pritchard and Gatliif 

 have already noted, should be included in the synonymy of Crosse's 

 species. M. cristatus Brocchi has been unfortunately associated 

 with T. petterdi by Mr. Sykes. 



Craspedotriton speciosus Angas. 

 Murex scalarinus A. Adams, Proc. Zool. Soc, 1863, p. 508; Not 

 Murex scalar inus Bivona, Gen. e sp. Moll., 1832, p. 27, PL iii., 

 %. 11. 



