A REVISION OF THE AUSTRALIAN TURRIDM—HEDLEY. 321 
Var. VINCENTINUS Crosse and Fischer. 
(Plate liii., fig. 149.) 
Pleurotoma (Mangelia) vincentina Crosse and Fischer, Journ. de Conch., 
xiil., 1865, p. 422, pl. xi., fig. 6. 
Mangelia vincentina Angas, Proc. Zool. Soc., 1865, p. 160, and 1877, p. 185. 
Td. Sowerby, Proc. Malac. Soe., ii., 1896, p. 30. Id. Pritchard and 
Gatliff, Proc. Roy. Soc. Vict., xii., 1900, p. 174. Id. Tate and May, 
Proc. Linn. Soc. N.S.W., xxvi., 1901, p. 369. Id. Verco, Trans. Roy. 
Soc. §.A., xxxiii., 1909, p. 316. 
Daphnellu vincentinu Tryon, Man. Conch., vi., 1884, p. 311, pl. xvi., fig. 91. 
Td. Cooke, Ann. Mag. Nat. Hist. (5), xvi., 1885, p. 35. 
Mangilia alucinans Sowerby, Proc. Malac. Soc., ii., 1896, p. 29, pl. iii., 
fie. 12, and var. ornata, pl. ui., fig. 13. Id. Pritchard and Gatliff, 
Proc. Roy. Soe. Vict., xii., 1900, p. 175. Id. Tate and May, Proc. 
Linn. Soc. N.S.W., xxvi., 1901, p. 369. 
Mungilia lineatu Angas (not Reeve), Proc. Zool. Soc., 1865, p. 160. 
Clathwrella browniana (Tenison-Woods) Tate and May, Proc. Linn. Soc. 
N.S.W., xxvi., 1901, p. 445. 
Hab. South Australia:—Rapid Bay (type of vincentiana, Angas) ; 
Yankalilla Bay (type of alucinans); St. Francis Island; 110 fathoms, 
Beachport (Vereo). Victoria:—Port Phillip; Western Port; Portland 
(Pritchard and Gatliff). Tasmania:—Long Bay (May); King Island 
(Tate). N.S. Wales:—Cabbage Tree Bay; 20 fathoms, Port Jackson 
Heads (Brazier); Twofold Bay (self). Western Australia :—King Georges 
Sound (Dakin). 
It is improbable that Cooke was correct in identifying this from the 
Gulf of Suez. 
This is one of the most wide-spread and variable of Australian marine 
temperate gasteropods. Typically G. pictus isan elongate round-shouldered 
shell, 11°5 mm. long and 3:5 mm. broad. Colour white, with a broad 
band, liable to splitting and paler at the edges, of sienna brown, which 
extends from the angle down to the suture; also a narrow spiral brown 
thread above the angle. The ribs are eight to a whorl, distant, oblique, 
continuous above, and gradually fading out on the base of the last whorl. 
To the unaided eye the surface is smooth and glossy, but under the 
microscope appear narrow, sharply incised, spiral grooves, faint above, 
and gradually becoming more distinct on the base; of these there are 
thirty on the last whorl. 
More common is the form called meredithice by Tenison-Woods. This 
is comparatively broader, more acutely angled at the shoulder, 9°5 mm. 
long, and 4mm. broad. Colour pale cream, with brown dashes in the 
intercostal spaces on the shoulder. The ribs are more prominent, and 
vary from nine to twelve on a whorl. The spiral strie multiply by 
intercalation to about sixty on the last whorl. A colour variety, with 
several narrow spiral brown bands, has been figured by Sowerby as 
ornata. : 
