REPORT ON THE GASTEROPODA. 271 



its callus being much fuller. This is markedly the case at the point of the shell, which in Marginella 

 occulta forms a narrow sharp flange, very prominent and essentially connected with the front tooth, 

 while in Marginella guancha, though much thickened, it is much less prominent, does not form a 

 flange, nor is connected specially with the front tooth, which is small and inconspicuous. 



Of course, being toothed on the outer lip, this species is not a Gibberula, but I leave it there 

 where the Messrs Adams have put it. 



14. Marginella (Gibberula) miliaria (Linne). 



Voluta miliaria, Linne, Syst. Nat., 12th ed., p. 1189, No. 402. 



Volvaria miliacea, Lamarck, Anim. s. vert., vol. vii. p. 364, and (ed. Desk) vol. x. p. 461, sp. 5. 

 „ „ Payraudeau, Moll. Corse, p. 168, No. 337, pi. viii. figs. 28, 29. 



„ ,, Kiener, p. 19, sp. 26, pL vi. fig. 26. 



„ „ Philippi, Enum. Moll. Sicil., vol. i. p. 232, vol ii. p. 197, sp. 2. 



Voluta miliaria, Hanley, Ipsa Linn. Conch., pp. 217, 515. 



Marginella miliacea, Hornses, Foss. Moll. d. TVien. Beckens, vol. i. p. 84, pi. ix. figs. 1, 2. 

 „ miliaria, Weinkauff, Conch. Mittelmeer., vol. ii. p. 20, sp. 1. 



,, „ Monterosato, Enumerazione, p. 48. 



„ „ Weinkauff, Conch. Cab. (ed. Kiister), p. 120, No. 179, pi. xxiii. figs. 1, 2. 



February 10, 1873. Tenerife; Canaries. 70 fathoms. 



Station 75. July 2, 1873. Lat. 38° 38' N., long. 28° 28' 30" W. Fayal, Azores. 

 450 fathoms. Volcanic mud. 



Habitat. — Mediterranean (Phil.), Madeira (Watson). 



Fossil from the Miocene onwards (Hornses). 



I have not quoted above Adanson's Lc Stipon (Senegal, p. 79, pi. v. fig. 4), though, in spite of 

 Deshayes (Anim. s. vert., 2d ed., vol. x. p. 481, note), I am inclined to think Kiener was right in 

 identifying his species with the one we are considering — nor "Wood (Ind. Test., p. 100, pi. six. fig. 

 52), who, according to Hanley (Tnd. Test., 2d ed.), presents Marginella lactea, Kiener — nor Sowerby 

 (Thes. Conch., pt. 7, p. 399, sp. 95, pi. lxxviii. figs. 227-230), whose species is not that of Linne — ■ 

 nor Reeve (Conch. Icon., vol. xv. pi. xxvii. fig. 154), whose species is Marginella guancha, D'Orb. — 

 nor Tryon (Manual, vol. v. p. 42, pi. xi. figs. 47, 48), who confuses Mediterranean and Eed Sea 

 species. Hornaes I have quoted with doubt. His figures and description are very little like the 

 Mediterranean species, but Weinkauff (Conch. Mittelm., vol. ii. p. 20) says he has seen the Miocene 

 fossils of which Hornaes speaks, and satisfied himself of their identity with the living form. 



15. Marginella (Granula) agger, 1 n. sp. (PI. XVI. fig. 6). 



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

 Island, West Indies. 390 fathoms. Pteropod ooze. 



1 The name is given with a reference to the rampart-like callus which encompasses the mouth behind. 



