42 Moll 
MOLLUSCA. 
Olividje. 
Olivella (Swains., 1835) = Olivina (Orb., 1839). No tentacles, foot 
short, rounded ; operculum present ; the internal walls between the 
whorls are constantly destroyed by reabsorption, as stated in 0. hiplicaia 
(Sow.), jaspidea (Gmel.), leucozonias (Gray), and columellaris (Sow.), by 
P. Fischer, J. de Conch, xxix. pp. 31-35. 
FusiDiE. 
Tryon, Manual of Conchology, iii. pp. 46-48, arranges the family as 
follows : — 
Subfam. Fusince, columella not plicate nor tortuous. Geu. ; Fusus 
(Lam.), Afer (Conrad), type Fusus afer (Lam.), Clavella 
(Swains,), Buccinofusus (Conrad), including the recent 
F. herniciensis (King). 
Fasciolariinccj columella tortuous with oblique plaits. Only one 
genus, Fasciolaria (Lam.). 
Ptychatractince. Differs from the preceding in lingual dentition. 
Gen. : Ftychatr actus (Stimps.) and Meyeria (Dunker & 
Metzger). 
Peristerniince, columella with transverse plications. Peristernla 
(Morch), Latirus (Montf.), Leucozonia (Gray). 
Fusus. 80 species, most of them typical, described and figured ; 
Tryon, 1. c. pp. 51-64 & 227-229, pis. xxxii.-xl. & Ixxxv., Ixxxvi. 
Fusus [?] xanthochrous, sp. n., Tapparone-Canefri, Faun. mal. Maur. 
p. 57, pi. iii. figs. 1 & 2, Mauritius [? = Buccinum crocatum (Reeve)]. 
A/er (Conrad) afer (Gmel.), hlosvillii (Desh.) with var. heptagonalis 
(Reeve); Tryon, 1. c. pp. 69 & 70, pi. xl. figs. 177-181. 
Clavella serotina (Hinds), id, 1. c. p. 70, pi. xl. fig. 182 ; the other 
species referred to by H. & A. Adams belong to other genera. 
Buccinofusus (Conrad), herniciensis (King), and terehralis (Gould) ; 
Tryon, Z. c. pp. 70 & 71, pi. xl. figs. 183, 184, & 189. 
Fasciolaria. 14 known species described and figured ; id. 1. c. pp. 73-78, 
pis. lix.-lxiii. 
Ptychatr actus ligatus (Mighels) and coreanicus (E. A. Smith), id. 1. c. 
p. 72, pi. xl. figs. 185 & 186. P, occidentalis (Stearns) is a doubtful species. 
Meyeria alba (Jeffr.), id. 1. c. p. 73, pi. xxxix. figs. 190^193. 
Peristernia (Morch). 29 known species described and figured ; id. 1. c. 
pp. 79-87, pis. Ixiv.-lxvi. 
Peristernia pauluccice and hoheltiana (Tapp.-Can., 1879), Mauritius, 
Tapparone-Canefri, Faun. mal. Maur. pp. 71 & 72, pi. ii. figs. 14 & 15, and 
pi. iii. figs. 17 & 18. 
Latirus (Montf.). 35 known species described and figured ; Tryon, Z. c. 
pp. 87-94 & 225, pis. Ixvi.-lxix, & Ixxxv. 
Latirus rohillardi (Tapp.-Can., 1879), carolianus, new name = Turhi- 
nella ustulata (Kobelt, nec Reeve) and concinnus, sp. n., all from Mauri- 
tius, Tapparone-Canefri, Faun. mal. Maur. pp. 77 & 79, pi. ii. figs. 10-13, 
and pi. iii. figs. 15 & 16. 
Leucozonia (Gray), 8 known species; Tryon, Z. c. p. 94-96, pi. Ixx. - 
