220 



Family TRICHOTROPID^. 



Genus Lippistes, Montfort. 



Lippistes separatista, Dillwjm, sp. PL ix., figs. 6 to 9. 



Turbo helicoides, Gmelin, Syst. Nat.,, p. 3598, No. 109; Tvrho 

 separatista, Dillwyn, Conch. Cab., vol. x., p. 298, pi. clxv., figs. 

 1589, 1590; Cat. Recent Shells, ii., p. 867, 1817; Wood,_ Ind. 

 Test., p. 151, pi. xxxii., f. 126, 1825; Separatista chemnitzU, A. 

 Adams, Proc. Zool. Soc, Loaid., 1850, p. 45; Tryon, Man. Conch.,, 

 ix., p. 45, pi. viii., f. 70; Rep. Challenger, Zool., xv., p. 428; 

 Trichotropis tricarinata, Brazier, Proc. Linn. Soc, N.S.W,, 1877, 

 i., p. 313; Separatista separatista, Dill ivijn, Hedley, Records Aust. 

 Mus., iv., No. 3. 1901, p. 126, pi. xvii., f. 22; Lippistes separa- 

 tista, Dillwyn, Hedley, Proc. Linn. Soc, N.S.W., 1902, p. 24; 

 Trichotropis blainvilleanus, Petit, Journ. de Conch., ii.. 1851 p. 

 22, pi. i., f. 5; Tryon, Man. Conch., 1887, ix., p. 45, pi. viii f. 

 69; Trichotropis gahrieli^ Pritchard and Gatliff, Proc. Roy. Soc 

 Vict., 1889, p. 183, pi. XX., f. 7; ibid, 1900, vol. xiii., p. 142. 



Some years ago five shells were dredged by me, all dead, 

 one in 13^ fathoms in Investigator Straits, off Point Marsden, 

 Kangaroo Island; two in 16-18 fathoms. Backstairs Passage, 

 and two in deep water, exact station unrecorded. 



This form was named and described by me in manuscript 

 as a new species chiefly because its whorls were curiously 

 polygonal, with a tubercle on the carinas at each angle. See 

 pi. ix., fig. 6. But in 1899 I had the opportunity at the 

 Natural History collection of the British Museum in London, 

 of comparing it with various species of the Trichofropidce, and 

 Mr. E. A. Smith kindly assisted me. 



Lijjpistes helicoides, Gmelin, from the Philippine Islands, 

 with four shells on the tablet, were identical. On the back 

 of the tablet carrying them was the following: — ''Turbo heVi- 

 coides, Gmelin," which meant that Mr. E. A. Smith had com- 

 pared these four shells with Gmelin's description and found 

 them to correspond. Gmelin's types are unknown ; possibly 

 he described only from a figure found elsewhere. Also, 

 "Separatista chemnitzii, A. Ads., P.Z.S., 1850, p. 45, types, I. 

 Bureas, Phil., II. Cuming." This means that these shells were 

 in Cuming's collection, were obtained from Bureas Island, in 

 the Philippine Islands, and are the types of S. chemnitzii, A. 

 Ads. Also, "Mekran coast in Coll. Melvill," signifying that 

 shells in Melvill's collection from the Mekran coast had been 

 compared by E. A. Smith, and found to be identical. Mine 

 were demonstrably conspecific, and Adams's shells were found 

 to possess the same polygonal form, with the tendency to tu- 

 berculation at the angles. There is no question about the 

 identity of our shell with Adams's species, and as this has 

 been made a synonym of Dillwyn's species, Dillwyn's name 

 should be accepted by us. 



