BY C. HEDLEY. 23 



growth. It is 1-36 mm. in major diameter, and was taken })y 

 Mr. Brazier in 20 fathoms off Cape Grenville, Queensland. 



On the genus Lippistes. 



In examining the type shells of the Chevert Expedition* I had 

 occasion to re^'ise several species referred to Trichoti-opis, and 

 concluded that the genus SejjarcUista included four Australian 

 species, viz. : — S. sejyaratista, Dillwyn, S. gracile7ita, Brazier, .S'. 

 torcidaris, T. Woods, and S. gahrieli, Pritchard &l Gatliff. 



A casual and inaccurate allusion to Lippistes by Melvill and 

 Standenf induced me to write to Mr. B. B. Woodv/ard for 

 information on Lipinstes and its relation to Sepai-atista. Mr. 

 Woodward in turn consulted Mr. E. A. Smith, and to these 

 gentlemen I am deeply indebted both for the following informa- 

 tion and for permission to publish it. Mr. Woodward writes : — 



^'■Lippistes is a good genus; its type is the Aryonauta cornu, 

 Gmel., figured by Montfort,| and subsequently and better by 

 von Fichtel (Test. Micr., pi. i.). There are good specimens in 

 the British Museum collection, and it is very clear. 



" As ^''ou say there are two Turbo helicoides, Gmel. ; and 

 Dillwyn selected the first and re-established Chemnitz's name for 

 it of Tui'ho separatista; but Chemnitz, not being at that time 

 binomial, the species must be attributed to Dillwyn. 



"Gray, in 1847 (P.Z.S., p. 136), apparently ignorant of 

 Dillwyn's work, raised this species to generic rank as Separatista, 

 and, while quoting the reference to Chemnitz correctly, misquoted 

 Gmelin, and gave as type, ' Ttirho helicina, Gmelin,' meaning of 

 course ^ helicoides.^ 



'• Then Adams (P.Z.S., 1850, p. 45), seemingly knowing nothing 

 of Dillwyn's doings, and possibly recognising the double helicoides, 

 rechristened the beast ^Separatista chemnitzii,^ and made some 

 observations on Lippistes and cornu which are absolutely wide 

 of the mark. 



"' Hedley, Records Aust. Museum, iv., 1901, p. 126. 



t Melvill & Standen, Proc. Zool. Soc. 1901, p. 361. 



X Montfort, Conch. Syst. ii,, 1810, pi. xxxiv., p. 217. 



