158. 
159. 
160. 
161. 
2 THE MOLLUSCA OF DORSETSHIRE. 
HOMALOGYRIDA. 
HOMALOGYRA, Jeffreys, 1867. 
. H. atomus (Phzl.) Skenea nitidissima, Peming. 
Weymouth, among green sea-weed on stones, £. R&R. Sykes. 
Kimmeridge Bay, sea-sands (dead), J. C. AL-P. 
H. rota (forbes and Hanley.) Skenea? rota, Forbes 
and Hanley. 
This minute shell is less than a half-line in length, and has the 
appearance of a miniature Ammonite. 
Weymouth, Damon; extremely rare. 
SKENEIIDA. 
SKENEA, Fleming, 1828. 
S. planorbis (Falr.) Helix depressa, Mont. 
Found all round the British shores. 
Weymouth, Nothe Fort to Sandsfoot, W. Thompson. 
Swanage, J. EL. Cooper. 
Fossil: Raised Beach, Portland, Prestwich. Clyde beds, 
Norway. 
ADEORBIIDA. 
ADEORBIS, S. Wood, 1842. 
A. subearinata (Jont.) 
Swanage, shore (dead), Z. R. Sykes, J. LE. Cooper. 
Weymouth, Damon. 
Fossil : Red and Coralline Crags. 
RISSONDA. 
RISSOIA, Fréminville, 1813. 
R. striatula (Mont.) Turbo striatulus, Mond. 
Pulteney, p. 50, pl. 14, f. 10. 
Forbes and Hanley, Vol. iii., p. 73, pl. 79, f. 7, 8. 
Weymouth, dredged (dead), W. Thompson ; seven fathoms, 
S. Hanley. 
Studland Bay, rare, 7. Rackett. 
Kimmeridge Bay, dredged (alive), shore-sand (dead), J.C. M.-P. 
