BRITISH MOLLUSCA. 
21 
Cyclas pusilla, Turton , Biv. 251. 1 . 11. f. 16, 17 ; Man. ed. 1. 16. 
C t fonWis, Nilsson , 101; Drap. 130. t. 10. f. 8, 11; Gras, 
Moll. t. Sc fl. France , 73. t. 6. f. 3, 4 ? ; Lamk . Hist. 2nd ed. 
vi. 270 ?; Desk. E. M. Vers, ii. pt. 2. 37 ? ; Hanley, Rec. Shells, 
i. 90, Supp. t. 14. f. 5. 
C. gibba, Alder, Cat. 41. 
Euglesia Henslowiana, Leach, MSS. Brit. Mus . ; Ann. Sf May. 
N. H. xx. 267. 
Pisidium pusillum, Jenyns, Monog. 14. t. 20. f. 4, 6 ; Gray, Man. 
L Sc F.W. Shells , 283. 1 . 1 . f. 7 ; Macgilliv. Moll. Aherd. 253 ; 
Brown, III. Conch. G. B. 95. t. 39. f. 27 ; Forbes and Hanley, 
Brit. Moll. t. 37. f. 10. t. O. f. 9, animal. 
Galileja, Costa. 
a—f. York. Presented by P. Carpenter, Esq. 
g — j , Britain. Presented by W. Trevelyan, Esq. 
k—vv. West Bergliolt, Essex. 
ww'l. Staffordshire. Presented by J. Carter, Esq. 
4. PlSUM PULCHELLUM. 
Pisidium pulchellum, Jenyns, Monog. 18. t. 21 . f. 1-5 ; Gray , Man. 
L. Sf F. W. Shells, 284. 1 . 12. f. 151 ; Macgilliv. Moll. Aberd . 
252; Forbes Sf Hanley, Brit. Moll. ii. 128. t. 37- f- 12, 13. 
Cardium amnicum, jun.. Montag. T. B. 88. 
Var. 1. Smaller, shell thin, finely striated, umbones rather 
acute. 
Pera pulchella, Leach, MSS. Cab. Brit. Mus. 
Pisidium fontinale, Pfeiffer, Deutsch L. Sf S. Moll. 125. t, 5. 
f. 15, 16 ; Brown, III. Con. G. B. 94. t. 39. f. 23. 
Cyclas fontinalis, Brown, Edin. Journ. N. Sf G. Sc. i. 11. f. 5, 7 ; 
Alder, Cat. 41. 
Pisidium pulchellum /3, Jenyns, Mon. 1. c. t. 21. f. 2, 3. 
Var. 2. Shell obliquely oval, finely striated; edge very blunt; 
hinge margin nearly straight. 
Pisidium pulchellum d, Jenyns, Mon. 18. t. 21. f. 4, 5. 
Cyclas pulchella, Hanley, Rec. Shells, i. 91. 
Pisidium Jenynsii, Macgilliv. Moll. Aberd. 249. 
P. Johannis, Macgilliv. Moll. Aberd. 248. 
a — n. Britain. 
Var. b. Jun. 
5. Pisum Henslowianum. 
Pera Henslowiana, Leach, MSS. Brit. Mus. 1819. 
Tellina Henslowiana, Leach, MSS . ; Shepp. Linn. Trans. x iv. 150, 
