OASTROrODA (RCUTTBRANCniA) . Moll. 45 
radula of which has not before been described and figured by Loven, will 
be mentioned infra. 
Neritid^. 
Nerita polita (L.) [marginata and rumpTiii (Reel.), varieties 
in the Red Sea ; Pagenstechor, in Kossmann’s Zool. Ergebnisse, i. pt. 2, 
p. 69, figs. 28-30 & 31-34. 
Neritina. E. v. Martens continues his monograph of this genus in the 
new edition of Chemnitz, part 266, pp. 65-144, Nos. 31-79, pis. x.-xiv. 
IIo treats the subgonus Neritma,^ group aeulmta), p. 70, N, aculeata 
(Chomn.), group semicirculatai, p. 72, N. latusima (Brod.), punctulata 
(Lam.), jordani (Sow.), &c. ; group (Menke) or serratce (Reel.), 
p. 93, N. gagates (Lam.), turrita (Ohemn.), communis (Q. G.), virginea 
(L.), &c. 5 group venoscc, p. 130, N. piipta (L.), reticulata (Sow.), &c. ; 
finally, the subgenus Neritodryas (Martens), p. 136, N. duhia (Chemn.), 
cornea (L.), &c. A synoptic table indicating the chief peculiarities of 
the species is given at the beginning of each group or subgenus. No new 
species. Peculiar attention is given to the geographical distribution and 
local occurrence (marine, for example, in N. virginea^ pupa, reticulata ; 
amphibious in N. cornea and duhia). 
Neritina comorensis, sp. n., Morelet, J. de Conch, xxv. p. 345, pi. xiii. 
fig. 6, Anjoana, Comoro Islands. 
Neritina thermophila, sp. n.. New Britain, in hot springs on the sea- 
shore, and souleyetana (Reel.), var. n. studeriana^ New Ireland, E. v. 
Martens, MB. Ak. Berl. 1877, p. 284, pi. i. figs. 12 & 13. 
Neritina sclmltzii, sp. n., Grimm., Kasp. more fauna, ii. p. 77, pi. viii. 
fig. 16, shell, and pi. vii. fig. 5, radula, Caspian Sea, 280-326 feet. N. 
liturata (Eichw.), radula, id. ibid. p. 76, pi. vii. fig. 2. 
J[Smaragdia ?] Neritina (^Theodoxus) viridissima, sp. n., Tapparone- 
Canefri, Ann. Mus. Genov, ix. p. 287, Sorong Island, N.W, of New 
Guinea [very near N. rangiana, Recluz]. 
Trochid.®. 
Phasianella munieri and brevis, spp. nn.. Villain, Arch. Z. exp<?r. vi. 
pp. 116 & 117, pi. iv. figs. 1-3, St. Paul Island, South Indian Sea. 
Turbo exquisitus, sp. n., Angas, P. Z. S. 1877, p. 175, pi. xxvi. fig. 18, 
Botany Bay. 
Turbo chemnitzianus (Reeve) in the Red Sea ; Pagenstecher, 1. c. p. 57. 
Trochits {Omphalitis) coohsoni, sp. n., E. Smith, P. Z. S. 1877, p. 71, 
pi. xi. fig. 7, Galapagos Islands. 
Ziziphinus occidentalis (Beck), radula ; Fricle, I, c. 
Oxystele depressa, sp. n., Messina, depth of 65 mHreSj and 0. romet- 
tensis (Seguenza, 1873, Turbo, pliocene), Algiers, 207 fathoms, both 
described by J. Grille, Descript, d. quelq. esp. nouv. pp. 5-9. Animal 
and operculum unknown [therefore the generic determination uncertain.] 
Troclius (Gibbula) drepanensis (Brugnone) found at Algiers ; Monte- 
ros.ato, J. de Conch, xxv. p. 31, pi. ii. fig. 6. 
