TROCHUS. 801 



Trochus virgineus. ChemnUzy x. p. 289- t. l65. f. 1581 



and 1582. 

 Trochus annulatus. Martyn Univ. Conch, i. t. 33. 

 Trochus caelatus, Var. ^. Gmelin, p. 3582. 

 Le Sabot Magellanique. Favanne, ii. p. 342. t. 79- f. T. 



Inhabits the Straights of Mag(jllan, and coasts of the Falkland 

 Islands. Favanne. New Zealand. Martyn. North West 

 coast of America. Humphreys. 



Shell about an inch long, and equally broad, of a yellowish co- 

 lour, with a red dot betvve<ni each of its minute transverse 

 granules, and generally a purplish band at the base of the 

 whirls ; the granules extend in concentric rows over the base, 

 and a purplish circle surrouinds the pillar ; the base is oblique- 

 ly convex, and the inside pearly and iridescent. Trochus 

 annulatus of Gmelin is a very minute species. 



DiAPHANUs. 98. Shell sub-conical, thin, with 

 crowded transverse rows of alternately white 

 and chestnut granules ; whirls and base con- 

 vex, and the aperture large, 



Trochus diaphanus. Gmelin,, p. 3580. 



Trochus punctulatus. Martyn Univ. Conch, t. 36. 



Trochus asper, &c. Chemnitz, v. p. 26. t. l6l. f. 1520 and 

 1521. 



Trochus, No. 7- Schroeter Einl. i. p. 681. 



Turbo punctulatus. Gmelin, ]p. 3589- 



Spengler Naturf. ix. p. 152. t. 5. f. 2. 

 Inhabits the coasts of New Zealand. Chemnitz. 

 Shell an inch and a quarter long, and about equally broad, and 



beautifully granulated all over in crowded transverse rows ; 



the colour is a pale dull chestwut, and in the specimen now 



before me the granules on the body-whirl are nearly all 



white, and those on the second whirl are only alternately so j 



the inside is striated, and very pearly and iridescent. 



SELECTus. 99. Shell sub-coaical, with granulated 

 transverse striae, and the body-whirl broad 

 and marginated at the base; spire acuminat- 

 ed, and the base convex. 



Trochus selectus. Chemnitz, xi. p. 168. t. 196. f. 1896 

 and 1897. 

 Inhabits the coasts of New Zealand. Chemnitz. 

 Shell about an inch and a quarter long, and near an inch and a 



