MOLLUSCA. ' 657 
Scurria (Orb.), differs from the LeiJetidm ; Sc, mitra (Eschsch.), pi. 16. fig. 6 
(dentition, shell, and soft parts). 
Patellid.®. 
. Patella toreuma (Reeve), amussitata (Reeve), and nigrolineata (Reeve), sac- 
charina (L.), with a variety = lanx (Reeve), and P. pentagona (Born ?, Reeve), 
all from Japan, described by Lischke, Moll. Jap. pp. 109-114; the first and 
third are figured on pi. 8. figs. 12-16, and figs. 6-11. 
' Patella articulatay its variations. Martens in v. d. Decken’s Reisen in Ost- 
Afrika, iii. p. 65. 
Patella mytilina (Helbling, Vn^t^—cymhularia (Lam.), Martens, Mai. Blatt. 
xvi. p. 236. 
Cellana is a new subgenus of Nacella, conical, with the apex subcentral. 
■N. (C.) cernica, sp. n., Adams, Proc. Zool. Soc. 1869, p. 273, pi. 19. fig. 7, 
Mauritius. [The distinctness from a true Patella is not apparent.] 
Chitonidaj. 
W. Marshall describes the macroscopical and microscopical 
structure of the valves, particularly a system of chantiels within 
the second principal or tegment stratum. He observes that the 
liver of the Chitons has the same structure as that of Crus- 
tacea ; but comes to the conclusion that they belong really to 
the Mollusca, forming a separate division of the same value as 
the Nudibranchs, Cyclobranchs, &c., being even more nearly 
allied to the first than to the second of these divisions. Archives 
Neerlandaises des Sciences Exactes et Naturelles, vol. iv.pp. 328- 
341, pi. 5. 
Chiton affinis, sp. n., figured in the Rescript, de TEgypte, pi. 3. figs. 8 &9, 
named and described by Issel, Malac. mar. ross. p. 234, Suez. Allied to Ch. 
sicidus (Gray). 
TECTIBRANCHIATA. 
Bullidas. 
, Cylichna villiersi and mongii described by Issel, Malac. mar. ross. p. 170, 
Red Sea. — Cylichna^ sp. n.?, Tapparone, Atti Soc. Ital. iii. p. 406, Spezzia. 
[^Cylichna’] Bulla rohagliana, sp. n.^ Fischer in Berchon, Fonds de la Mer, 
p. 160, pi. 23. fig. 2, Gulf of Gascony. 
Tomatina oliveeformis, sp. n., figured in Descript, de TEgypte, pi. 6. fig. 26, 
,and T. pusilla, sp. n., both from the Red Sea. Issel, l.c. pp. 170-172; the 
latter figured on pi. 1. fig. 15. 
Utriculm globosus (Lov<5n, ns Amphisphyra), from Magnus Bay, in 60-80 
^fathoms, Jeffreys, Brit. Conchol. v. p. 223, pi. 102. fig. 8. 
Atys. The monograph of this genus is continued by Sowerby in Reeve’s 
Conchologia Tconica, from plate 2, species 6, to plate 6, species 30. New 
are : — guildinii [guildmgii], pi. 6. fig. 26, St. Vincent, and attenuata [-ws], pi. 6. 
fig. 29, locality unknown. 
Bulla {Atys) cylindrica. This name was first given by Helbling. Martens, 
Mai. Blatt. xvi. p. 236. 
