BRITISH MOLLUSCA. 
105 
Mytilus anatinus, Da Costa , Brit. Conch. 215. t. 15. f. 2 ; Mont. 
T. B. 171 ; Chemn. Conch. Cab. viii. t. 86. f. 763 ; Dillw. R. S. 
i. 317. 
Grand moule des etangs, Geoff. Coq. Bans , t. 3. 
a—e (A, Cellensis). New River, near London. 
/ (A. stagnalis). England. From Mr. Sowerby’s Collection. 
(?) Warwickshire. Presented by Mrs. Corrie. 
h — -j (A. cygnea). New River, London, and Wiltshire. 
Jc—q (A. piscinalis). Near Yarmouth, and River Bure, Nor- 
folk. 
r — w (A. complanata). England. 
x — b b (A. rostrata). Liverpool. 
c c (A. anatina). River Tay. Presented by Rev. Dr. Fleming. 
d d, e e (ditto). Wiltshire. Presented by Miss Benett. 
ff (ditto). Surrey Canal Docks. 
g g — mm (?). River Brent, at Hendon, Middlesex. 
n n (?). Tisbury, Wiltshire. Presented by Miss Benett. 
00 — s s (A. Avonensis). Ditto. Ditto. 
1 1. Ditto. Ditto. Ditto. 
2. Margaritana. 
Margaritana (margaritifera), Schum. Essai, 123, 1817 ; Lea, Trans. 
Amer. Soc. vi. 1838 ; Observ. ii. 118, 134 ; Swains. Malac. 288, 
382, 1840 ; Troschel, Wiegm. Handb. Zool. ed. 2. 587 ; Gray , 
P.Z. S. 1847, 196. 
Unionidium (margaritifera), Mus. Berl. 1818. 
Baphia, sp., Meuschen, Mus. Gevers. 1787- 
Damalis (margaritifera), Leach, MSS. 1818, Ann. fy Mag^ N. H . 
1847, xx. 2/3 ; Swainson, Malac . ; Gray, P. Z. S. 1847, 196. 
Damaris (margaritifera), Leach, MSS . 1818, in Gray, Turton , 
Man. ed. 2. 293 (misprint?). 
Unio (margaritifera), Oken, Zool. 387, 1815; Isis, 1817, 1167 ; 
Turton, Bivalves, 249, 1822. 
Unio, sp., Lamk. Hist. vi. 1818. 
Mya, sp., Linn. S. N. 
Unio (littoralis), Lamk. Syst. A. s. V. 114, 1801. 
Potamida (sinuata), Swains. Malac. 1840. 
Complanaria (gigas), Swains. Malac. 1840. 
Uniopsis (mytiloides), Swains. Malac. 1840. 
Alasmodonta (undulatus), Say, Nicholson's Encyclopedia ; Trans . 
Amer. Phil. Soc. i. 459, 1820; Desh. Ency. Meth. ii. 14; Fe- 
russac, Tab. Syst. 1819. 
Alasmidonta, Rajin. Monog. Biv. Ohio , 1829; Blainv. Malac. 
630, 1825. 
Anelasmodonta, Herrmannsen, Ind. 27. 
Alasmodon (margaritifera), Flem. Brit. Anim. 417, 1828; Gray , 
e 5 
