116 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
* Rissoa soluta, Phil. 
Very rare at Southport (G.W.C.). 
* Rissoa semistriata, Mont. 3 
This and the last are new to district: seaweeds at 
low water, Puffin Is. (A. Leicester): Fleetwood 
COW Sel). 
fiissoa cingillus, Mont. 
Dead from Bull Bay, Porthwen (F.A.): abundant 
above Laminarian zone at Port Erin and Bay-ny- 
Carrickey (F.A.). 
* Hydrobia ventrosa, Mont. 
var. ovata, Jeff. Débris at h.w. mark near the border 
of Pilling Marsh (W.H.H.). 
*Jeffreysia diaphana, Alder. 
Abundant on weed at low water at Porthwen (F.A.): 
one at Bull Bay (F.A.) and one at Puffin Is. (A.L.). 
Skenea planorbis, Fab. 
Porthwen at low water, arid abundant near Pt. Hrin 
(F'.A.), always on seaweed. 
Homalogyra atomus, Ph. 
Sparingly near Port Erin and at Porthwen (F.A.): 
among Lamnarva roots at Puffin (G.W.C.). 
*Cacum glabrum, Mont. 
Rare at Southport (C.H.B. and G.W.C.). 
*Aclis unica, Mont. 
*Aclis ascaris, Turton. 
Aclis suprantida, S. Wood. 
Dead records also from Bull Bay (F.A.); Crosby 
(A. Reade); central area, 2 specimens. 
fboth rare at Southport (G.W.C.). 
*Odostomia rissoides, Hanley. 
Abundant living at Puffin under stones and at Lam- 
inarta roots (A. Leicester): var. dubia, Jeff. (teste 
Jeffreys) Southport drift (C.H.B.). 
