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



5. Fissurella (Lucapina) cayenensis, Lamarck. 



Fissurella cayenensis, Lamarck, Anim. s. vert., vol. vi. (2), p. 12 ; and (ed. Desh.), vol. vii. p. 594, No. 6. 



„ ,, Deshayes, Encyc. method., vers. voL ii. p. 137, No. 22. 



„ „ Delessert, Recueil, pi. xxiv. fig. 5. 



,, ,, Sowerby, Conch. 111., f. 7. 



„ ,, Sowerby, Thes. Conch., pt. 21, vol. iii. p. 197, sp. 94, pi. ccxl. (gen. v.), fig. 101. 



„ „ Reeve, Conch. Icon., vol. vi. pi. xii. fig. 82. 



„ „ Fischer, Coquilles Guadaloupe (Beau), Revue coloniale, 1857, p. 19, sp. 6. 



,, ,, Tristram, Proc. Zool. Soc. Lond., 1861, p. 405. 



Station 33. April 4, 1873. Lat. 32° 21' 30" N., long. 64° 35' 55'.' W. Bermuda. 

 435 fathoms. Coral mud. 



Station 122. September 10, 1873. Lat, 9° 5' S., long. 34° 50' W. Pernambuco. 

 350 fathoms. Red mud. 



Habitat. — Cayenne and Guinea 1 (Sowerby), West Indies and Cayenne (British 

 Museum), Guadaloupe (Beau). 



The specimen from Station 33 is a young shell in very bad condition, but agrees with nothing 

 so well as with this species. 



Deshayes (loc. cit.) says that Lamarck has united two species under this one name. Delessert 

 has surely perpetuated the confusion, for his figure can hardly refer to this species, and in various 

 museums there is a want of definiteness about the forms classed under this name. 



6. Fissurella (Lucapina) fumata (?), Reeve. 



Fissurella fumata, Reeve, Conch. Icon., vol. vi. pi. ix. fig. 63. 



„ ,, Sowerby,Thes. Conch., pt. 21, vol. iii. p. 197, sp. 89, pi. ccxl. (gen. v.), figs. 95-97. 



October 29-December 16, 1873. Sea-Point, near Cape Town. 



No habitat is given by Reeve. Sowerby ascribes the species to the West Indies, but surely his 

 figure does not represent the same species. The Challenger specimen is so broken that its iden- 

 tification with any certainty is impossible. In Krauss's Siidafrik. Moll., pp. 63-68, the only species to 

 which this could belong, is Fissurella elcvata, Dunker; but even after Krauss's corrections regarding 

 the fissure are made, the 180 ribs (see Philippi, Abb. and Besch., vol. ii. p. 67, pi. xiii. f. 4) make it 

 impossible to bring the Challenger specimen under that species, unless, indeed, one were allowed 

 to reduce that number given in the text to something like the number presented in the figure. 



1 Probably by mistake for Guyana. 



