99: 
100. 
101. 
(oa) 
THE MOLLUSCA OF DORSETSHIRE. 
A. CEPHALASPIDEA. 
ACTAONIDZ. 
ACTZEON, Montfort, 1810. 
A. tornatilis (Z.) Tornatella fasciata (L.) Voluta 
tornatilis, L. 
Pulteney, p. 44, pl. 14, f. 2. 
Weymouth, Bryer; £. R. Sykes. 
TORNATINIDA. 
RETUSA. 
R. obtusa, (Mont.) Cylichna cylindracea, Jon. 
Bulla cylindracea, Pennant. 
Pulteney, p. 43, pl. 18, £ 22. Mont. Test. 13 pa2 
Dleiintoncs 
Inhabits various depths, occasionally cast ashore, Weymouth, 
(Pulteney) W. Thompson. 
Between South Haven and Studland, Carleton Green. 
Challenger Expedition, Ascension Island. 
Fossil: Coralline and Red Crags. 
R. truncatula (rug). Utriculus truncatulus, Brug. 
Cylichna truncata, Mont. 
Forbes and Hanley, Vol. iii., p. 510, pl. 114, f. 7, 8. 
Brit. Conch., Vol. iv., p. 421, 422. 
Not uncommon in the Laminarian zone. 
Weymouth, dredged, W. Thompson. 
Var. pellucida (Bro.) 
Weymouth, G. Jeffreys. 
Fossil: Coralline Crag. Raised Beach, Prestwich. 
2. R. hyalina (Turton). Amphisphyra hyalina, Tut. 
Forbes and Hanley, Vol. iii., p. 521, pl. 114, f. 1, 2. 
Lives in the Laminarian zone. 
Weymouth, dredged, 50 fathoms (dead), Forbes and Hanley, 
Poole Harbour, back of Hook, W. Turner. 
