91.  Pterocera lambis, Lam.  Hist. 7 196.  Strombus lambis, Gmel.  Syst.  Nat. 3508.  Icon.  Lister.  Conch. t. 866. f. 21.  Martini, Conch. 3 t. 87. f. 858, 859.

This shell is very distinct from Strombus camelus of Chemn. 10 t. 155. f. 1478.

92.  Bulla australis, Gray, Ann. of Philosophy, 9 n.s. 408.  Icon. —­

This species is very distinct from Bulla striata, Lister.  Conch. t. 714. f. 72. with which it has been generally confounded; it is of larger size and perfectly smooth.

93.  Bulla hyalina (n.s.)

Testa ovata cylindrica imperforata tenuis hyalina albida laevis concentrice subrugosa; apice incrassato.  Icon. —­

The shell ovate, cylindrical, thin; hyaline white, smooth, very slightly concentrically rugose; the vertex thickened, not perforated; the aperture rather longer than the shell; the inner lip slightly reflexed; axis five-twelfths, diameter three-twelfths of an inch.

94.  Cryptostoma haliotoideum (n.) Sigaretus haliotoideus, Lam.  Hist. 6 2. 208.  Icon.  Martini.  Conch. 1 t. 16. f. 151-154.

95.  Hipponix listeri (n.) Icon.  Lister. t. 544. f. 29.

This shell is very nearly allied to Pileopis, but the animal is evidently not brachiopodous.  It does not form (or at least not always) a shelly support, but corrodes the surface of the shell to which it is attached, so as to form a more flat attachment, and to leave a lunate convex rib instead of the lunate muscular impression which is observed on those specimens or individuals which have a shelly base.

96.  Siphonaria radiata, Var.  Gray, Phil.  Mag. 1824. 275. 
Siphonaria exigua, Sow.  Gen.
Patella japonica, Donovan. 
Icon.  Donovan, Nat.  Repos. t. 79.

97.  Bulimus kingii, Gray, Ann.  Phil., 9 n.s. 414.  Icon.

The shell ovate, white, with numerous dark-brown irregular concentric lines, smooth except near the suture where it is slightly wrinkled; whorls six, rather convex; aperture ovate, about half as long as the shell; peristome thin (perhaps not formed); perforation covered with a white even lip, surrounded by a dark edge; the throat chocolate-brown.

This shell is abundant on the hills of King George the Third’s Sound, in the vicinity of Bald Head.

98.  Cyclostoma australe (n.s.)

Testa orbiculata subtrochiformis profunde umbilicata albida fasciis binis fuscis cincta, spira brevi acuta, anfractibus 5 convexis concentrice sulcatis.  Icon. —­

Shell orbicular, nearly trochi-form, white with two pale-brown bands on each whorl; the one near the suture narrow, and the other, placed on the middle of the whorl, broad; whorls five; convex rounded, with numerous close concentric furrows; axis umbilicated; umbilicus rather narrow, deep; aperture rather more than one half the length of the shell; peristome (not formed ?) simple.

99.  Chiton rugosus (n.s.)

Testa octovalvis glabra, valvis tuberculatis, ligamento glabro laevi. 
Icon. —­