REPORT ON THE GASTEROPODA. 49 



This is a most exceptional and peculiar Little species, quite unlike any other. 



In Professor Seguenza's figure the little rounded tubercles which stud the glossy surface of the 

 shell are arranged in regular horizontal and less regular vertical rows ; but in all the specimens I 

 have seen, kindly sent me by Professor Seguenza, they arrange themselves transversely. In the 

 Challenger specimen these tubercles are much more numerous and smaller, and are horizontally 

 oblong, not round as in the fossil shell. Professor Seguenza {loc. cit.) refers to " due solchette 

 laterali, superficial! poco distinti," which run downwards and forwards from the top on the line of 

 attachment of the internal septum. Of these there is barely a trace in the Challenger specimen. 



Family Haliotice, Flem., 1828. 



Genus Haliotis, Linne, 1758. 



Species. 



1 . Haliotis ncevosa, Martyn. 2. Haliotis varia, Linne. 



1. Haliotis ncevosa, Martyn. 



Haliotis ncevosa, Martyn, Univ. Conch., vol. ii. f. 63. 



tubifera, Encyclop. method., vol. ii. (pt. 2), p. 179, No. 3 (in part). 

 nozvosa, Lamarck, Anim. s. vert. (ed. Desh.), vol. ix. p. 34, No. 20. 



„ Reeve, Conch Icon., vol. iii. pi. viii. fig. 27a, and pi. ix. fig. 27b and c. 



„ Sowerby, Thes. Conch., pts. 37, 38, p. 31, No. 59, pi. ccccxxxiii. (Gen. vi.) fig. 39, 



pi. ccccxxxvii. (Gen. x.) fig. 73. 

 „ Angas, South Austr. MolL, Proc. Zool. Soc. Lond., 1865, p. 183, No. 178. 

 „ Angas, Port Jackson Moll., Proc. Zool. Soc. Lond., 1867, p. 218, No. 203. 

 ,, Weinkauff, Conch. Cab. (ed. Klister), p. 31, pi. xiv. figs. 1-3. 



April 17-18, 1874. Port Jackson, Sydney. 2 to 10 fathoms. 

 April 23, 1874. Port Jackson, Sydney. 6 to 15 fathoms. 



Habitat. — Australia (British Museum), Port Jackson (Angas). 



2. Haliotis varia, Linne. (See Appendix, No. 1.) 



Family Teochid^:, D'Orb, 1837. 



Genera. 1. Trochus, Linne. 2. Gaza, Wats. 3. Bembix, "Wats. 4. Basilissa, Wats. 5. Seguenzia, Jeffr. 

 6. Stomatella, Lam. 7. Scissurella, D'Orb. 8. Schismope, Jeffr. 9. Homalogyra, Jeffr. 10. Cyclo- 

 strema, Marryat. 11. Phasianella, Lam. 12. Turbo, Linn. 



1. Trochus, Linne, 1758. 

 Species. 



1. Trochus niloticus, Linne. 7. Trochus (Euchelus) baccatus (Menke). 



2. Trochus (Clanculus) clangulus, Wood. 8. Trochus (Euchelus) dunkeri, Koch 



3. Trochus (Clanculus) homalomphalus, Wood. 9. Trochus (Monodonta) labio, Linne. 



4. Trochus (Clanculus) maugeri, Wood. 10. Trochus (Ziziphinus) decoratus, Phil. 



5. Trochus (Clanculus) floridus, Philippi. 11. Trochus (Ziziphinus) exasperatus, Pennt. 



6. Trochus (Euchelus) airatus (Gmel.) 12. Trochus (Ziziphinus) similaris, Reeve. 

 (zool. chall. exp. — part xlii. — 1885.) Tt 7 



