’Sep., 1889. 
MOLLUSCA OF NORTH STAFFORDSHIRE. 
207 
THE LAND AND FRESH WATER MOLLUSCA OF 
NORTH STAFFORDSHIRE. 
COMPILED BY JOHN R. B. MASEFIELD, M.A. 
Note. —The initials of the authorities quoted refer as follows :— 
L. E. A.—Mr. Lionel E. Adams, B.A., Penistone. 
J. It. B. M.—Mr. John It. B. Masefield, M.A., Itoseliill, Cheadle, 
Staffordshire. 
E. D. B.—Mr. Edwin D. Bostock, The Radfords, Stone. 
T. E. B.—Mr. Thos. F. Burrows, Daisy Bank, Cheadle. 
F. B. W.—Mr. Fred. B. Webb, Stafford. 
AQUATIC. 
CONCHIFERA. 
SPHERIIDiE. 
SPH2ERIUM. 
1. —Sphserium corneum 
,, v. flavescens 
,, v. nucleus 
2. ,, rivicola 
3. ,, ovale 
4. ,, lacustre 
,, v. Brochoniana 
PISIDIUM. 
5. —Pisidium amnion m 
6. — ,, fontinale 
7. — „ nitidum 
UNIONIDiE. 
UNIO. 
8. —Unio tumidus 
,, ,, v. radiata 
„ ,, v. richensis 
9. ,, pictorum 
,, ,, v. longirostris 
ANODONTA. 
Common everywhere. 
Canals, Stone (J. R. B. M.), Stafford 
(F. B. W.) 
Canal, Barlaston (J. R. B. M.) 
Common, all canals and rivers. 
Froghall Canal, very fine (J.R.B.M.) 
Stoke-on-Trent Canal (F. B. W.) 
Stafford (F. B. W.) 
Ditto 
Canals, common. 
On duckweed in ponds, fairly 
common. 
River, Stafford (F. B. W.), Colwich 
(J. R. B. M.) 
In all large pools, meres andjcanals. 
Canal, Colwich (J. R. B. M.) 
Copmere (J. R. B. M.) 
Large pools, meres and canals. 
Copmere (J. R. B. M.), Canal, 
Colwich (F.B. W.), also var. with 
rich salmon nacre (J. R. B. M.) 
10.—Anodonta cygnea 
11. 
,, v. radiata 
,, v. incrassata 
,, v. Zellensis 1 
,, v. pallida 1 
,, v. rostrata J 
anatina 
.Same localities as Unios, very large, 
in pool, Aston, Stone. 
Stone Canal (J. R. B. M.) 
Hales Hall Pool,Cheadle (J.R.B.M.) 
Copmere (J. R. B. M.) 
Same localities as last. 
V. S, f Canal. Colwich (J. R. B. M.) 
