INDEX AND SYNONYMY. 
Crassilabrum (Mangilia), Reeve. Proc. Zool. Soc., 1843, 
. 135, : : : ‘ : : : : 
Pe sispirs. Swainson. Malac., 152, 313, 1840. 
= Drillia, Sect. . : 155, 
Craticulata (Defrancia), Olivi (nee Linn.). Chieregh. Conch., 
6G. == M.. Cordieri, Payr- 
Craticulata (Lachesis), ’Mareh. Mal. Blatter, vii, p. 104, . 
Crebricostata (Daphnella), Cpt. Ann. Mag. N. H., 1865, 
XV, p. 28, 
Crebricostata (Pleurotoma), I Hinds. Proc. Zool. Soc., 1843, 
p- 41; Reeve, Icon. Pleurotoma, Corrections. 
== Dy Maravigne, Bivona. 
Crebriplicata (Pleurotoma), Reeve. Proc. Zool. Soc., 1846, 
Didar’: : 
Crenularis (Drillia), Lam. Anim. sans ‘Vert., vii, , p- 92, 
Crenulata (Daphnella), Pease. Am. Jour. Conch. ep ales 3 "921, 
pl. 15,fig.20, . 
Crispa (Pleurotoma), Lam. ‘Anim. s. Vert., vil, ». 95, 1818, 
Crispatum (Pleurotoma), Phil. En. Moll. Sic., , p. 200; 
p- 170, t. 26, f. 12. — D. Loprestiana, aie A 
Crocata (Drillia), Reeve. Proc. Zool. Soc., 1845, p. 110, 
Cryptoconus, v. Koenen. Arch. f. Nat., 1880, ii, 211. 
Cry; ptorrhaphe (Pleurotoma), Sowb. App. Tank. Cat. Dp. 14, 
Crystallina (Clathurella), Gabb. Proce. Cal. Ac. N. S., 
1865, p. 184, : 
Cubensis (Pleurotoma), Smith. Ann. Mag. N. 8. , 1882, 211. 
= Mangilia luctuosa, d’Orb. : 
Cunninghami (Pleurotoma), Smith. Proce. Zool. Soc., ‘1881, 
B.2h, pL Wedal< (== .B. subluta, Gould, 
Cuprea (Pleurotoma), Reeve. Proc. Zool. Soe. 1843, p. 187. 
= D. fuscescens, Gray. 
Curculio (Clathurella rugosa, var.), Nevill. Jour. As. Soc., 
1875, 86, . : 3 ‘ : 
Curta (Daphnella), Pease. Am. Jour. Conch., ,P. 291, 
M5, 7.99... 
Curvata (Pleurotoma), Anton. Verzeichniss, p. 14, : 
Cumingii (Clathurella), Powis. Proc. Zool. Soc. , 1835, 
Bocladensis (Pleurotoma), Reeve. Conch. Ic., "pl. XK, 
fig. 289, 1845. — D. brachystoma, Phil. 
Cy clophora (Clathurella), Desh. Moll. Reunion, P. 1, pl. 
xii, f. 19-21,1868, . 
Cylindracea (Bela), "Mill. Moll. Greenl. aa 13. 
= B. bicarinata, Couth. . : 5 5 
Cylindrica (Clathurella), Pease. Proc. Zool. Soc., 1860, p. 
3, | ; : : : 5 - 
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