110 
BRITISH MOLLUSCA. 
b b — e e (short, salmon-coloured inside). Castle Ashby. Pre- 
sented by the Marquis of Northampton, 
// (very deep salmon-coloured inside). Herefordshire. Pre- 
sented by G. Waterhouse, Esq. 
g g — i i (light salmon-coloured inside). Wednesbury, War- 
wickshire. Presented by Mrs. Corrie. 
jj, kk (var. distorted). River Thames. 
1 1 (ditto). Presented by J. JD. C. Sowerby, Esq. 
Fam. 5. Arcade. 
Arcadae, Leach , MSS. 1818, Ann. Sf Mag. N. H. xx. 272 ; Flem. 
Brit. An. 382, 1828; Gray , Syn. B. M. 1840; 1842, 81, 91; 
Proc. Zool. Soc. 1847, 197. 
Arcadae, part., Swains . Malac. 382, 1840. 
Axinea and Axinoderma, Daphnaea and Daphnaeoderma, Poll, 
Test. Sicil. 
Les Arcacees (Arcacea), Lamk. Phil. Zool. 318, 1809; Cour. 106, 
1812; Hist. v. 33, ed. 2. vi. 451; Blainv. Diet. Sci. Nat. x. 
216; Sow. Conch. Man. ed. 2. 72. 
Arcaces, Feruss. Prod. 42 ; Rang , Man. Moll. 287. 
Byssiferia, Limaeridia and Pernaridia, part., Rafin. 
Pectunculidae, Leach , MSS. 1818, Ann. Sf Mag. N. H. 1847, 27 2. 
Arcacea, Anton , Verz. Conch. 12. 
Arcina, part., Macgilliv. Moll. Aberd. 207. 
Area, Linn. Syst. Nat. 
Arcae, § 3. part., Oken , Zool. 1815. 
Arcaria, Gravenh. Thier. 33, 1845. 
Arcacidae, D’Orb. Pal. Frang Geinitz, Grund. 
Arcaceae, part., Menke , Syn. 60, 1828. 
Arcadae, part., Forbes Sf Hanley , Brit. Moll. ii. 
Pogonopoda, part.. Gray , Lond. Med. Repos. 1821. 
Polydonta, Blainv. Diet. Sci. Nat. xxxii. 320, 1824 ; Malac. 535, 
1825. 
? Polybranchiata, G. Sow. Conch. Man. ed. 2. 233. 
* Arcade, Leach. 
1. Arc a. 
Area, part., Linn. S. N. ed. 10. 1758, ed. 12. 1140, 1 767; Gmelin , 
S. N. 3305, 1788 ; Brug. Enc . Meth. i. 92, 1789. 
Area (Noae), Lamk. Syst . 115, 1801 ; Hist. ed. 2. vi. 457, 1818 ; 
Rang, Man. 287 ; Desh. Ency. Meth. in. 553 ; Leach , MSS. 
1818, Ann. Sf Mag. N. H. xx. 272; Sow. Gen. ; Conch. Man. 
ed. 2. 71 ; J • Sow . Min. Conch . t. 44 ; Blainv. Malac. 535, j 
