APPENDIX A. 



No. I. (See p. 49.) 



2. Haliotis varia, Linne. 



Haliotis varia, Linne, Syst. Nat. (ed. 12) p. 1256, No. 742. 



Martini, Conch. Cab., vol. i. p. 179, pL xv. fig. 144. 



Dillwyn, Catalogue, vol. ii. p. 1010, sp. 7. 



Wood, Ind. Test., p. 183, pi. xxxvi. fig. 7. 



Lamarck, Anim. s. vert. (ed. Desk), voL ix. p. 31, sp. 17. 



Keeve, Conch. Icon., vol. iii. pi. ii. fig. 4. 



Hanley, Ipsa Linn. Conch., pp. 411, 544. 



Weinkauff, Conch. Cab. (ed. Kiister), p. 10, sp. 6, pi. iii fig. 4. 



v. Martens, Moll. Mauritius, &c, p. 298. 



February 1, 1875. Samboangan, Philippines. 10 fathoms. 

 Habitat. — From the east coast of Africa to Australia (v. Martens). 



No. Ia. (See p. 121.) 



2. Homalogyra densicostata (?), Jeffreys. 



Eomalogyra densicostata, Gwyn Jeffreys, Moll. "Lightning" and "Porcupine" Exped., Proc. Zool. 



Soc. Lond., 1884, p. 129, pi. x. fig. 1. 



Station 24. March 25, 1873. Lat. 18° 38' 30" N., long. 65° 5' 30" W. Off Culebra 

 Island, West Indies. 390 fathoms. Pteropod ooze. 



Habitat.— North Atlantic, "Bulldog" Exped., lat. 55° 36' N., long. 54° 33' W., 1622 

 fathoms (Jeffreys, Brit. Conch., vol. iv. p. 72); " Porcupine " Exped., 1870, Stations 16 

 and 17a, lat. 39° N, long. 9° W., 795 to 994 fathoms. 



I have not seen Dr Gwyn Jeffreys' specimens of this species, but I think the Challenger shells 

 correspond fairly with the description and figure; the sharp keel which he describes as encircling 

 the upper part of the periphery, and also the base, is very feeble in his figure, and is still more so 

 compared to the strong expressed angulation in the Challenger shells, but his figure suggests that 

 this may be the effect of a fuller development of the whole shell. Such a change is a very frequent 

 result of larger growth consequent on age, and possibly Dr Gwyn Jeffreys' specimens are better 

 grown than mine, which are of decidedly smaller measurement than his. 



