70 THE VOYAGE OF H.M.S. CHALLENGER. 



Station 149d. January 20, 1874. Lat. 49° 28' S., long. 70 3 13' E. Royal Sound, 

 Kergueleu. 28 fathoms. Volcanic mud. 



Station 315. January 26-28, 1876. Lat. 51° 40' S., long. 57' 50' W. Port William, 

 Falkland Islands, from the kelp, in from 5 to 12 fathoms. Sand and gravel. 



Station 316. February 3, 1876. Lat. 51° 32' S., long. 58° 6' W. Port Louis, Falk- 

 land Islands. From the crop of a duck. 



Habitat. — Strait of Magellan. 



The specimens from Station 316 seem to have been quite newly swallowed, the animals being 

 still entire and retaining the operculum. 



Some of the pink varieties of this extremely abundant shell are occasionally taken for Trochus 

 (Plwtinula) violacea, King (= Margarita magcllanica, Homb. and Jacq., and = ? Margarita persica, 

 Gould), the specific distinctness of which Mr E. A. Smith questions, though, I think, needlessly. 



31. Trochus (C/dorostoma) ater, Lesson. 



Trochus ater, Lesson, Voyage " Coquille," p. 344, pi. xvi. fig. 2. 



Turbo lugubris, King, Zool. Journ., vol. v. p. 345, No. 47. 



Trochus atcr, D'Orbigny, Voy. Arne>. mirid., vol. v. No. 309, p. 409. 



„ „ Gould, Explor. Exped., p. 182, pi. xiii. fig. 211. 



„ „ Philippi, Abb. und Besch., vol. i. p. 188, pi. xliv. (Generis v.), fig. 6. 



„ „ Philippi, Conch. Cab. (ed. Krister), p. 198, sp. 243, pi. xxx. fig. 1. 

 Chlorostoma atrum, A. Adams, Proc. ZooL Soc. Lond., 1851, p. 180, sp. 4. 



„ Chenu, Man. Conch., vol. i. p. 361, fig. 2682. 

 Trochus ater, Fischer in Kiener, Turbo, p. 109, sp. 74, pi. xxx. fig. 2. 

 Chlorostoma atrum, Tapparone-Canefri, " Magenta," p. 65. 



November 18, 1875. Valparaiso, Shore. 



Habitat. — Chili and Bolivia (D'Orb.), Straits of Magellan (Tapp.-Canef.) 



32. Trochus [Chlorostoma) xanthostigma (A. Adams). 



Chlorostoma xanthostigma, Adams, Monog. Trochid., Proc. Zool. Soc. Lond., 1851, p. 183, No. 32. 

 Trochus nigricolor, Dunker, Malak. Blatter, 2d series, Neue Japanische Mollusken, # 1860, vol. vi. 

 p. 237, No. 50. 



„ „ Dunker, Moll. Jap., p. 22, pi. iii. fig. 2. 



,, ,, Lischke, Japan. Meer. Conch., vol. i. p. 100, pi. vii. figs. 1, 2, vol. ii. p. 91. 



May 14, 1875. Oosima, Japan. 

 H abitat.— Japan (Dunker). 



