AGASSIZ. NATURAL HISTORY OF THE UNITED STATES. 489 
Family 11. — BERENiciDiE. 
Berenix, Ter. Sf LeS. Proboscidactyla, Br. 
Cuvieria, Ter. Sf LeS. Willia, Fortes. 
Eudora, Ter. Sf LeS. 
Conis, Br. 
Turris, Less. 
Tiara, Less. 
Pandea, Less. 
Family 12.— Nitcleifera:. 
Turrit opsis, Me Or. 
Modeeria, Forbes. 
Stomotoca, Ag. 
Bbizogeton, Ag. 
Sub-order TV. —SEBTULAELE. 
Family 1 . — Aglauridal 
Aglaura, Ter. Sf LeS. Lessonia, Fyd. fy Soul. 
Family 2.—CirceidjE. 
Circe, Alert. Mitra, Less. 
Persa, Me Or. 
Family 3. — Polyorchid^:. 
Polyorcbis, A. Ag. 
Family 4.—Melicertida:. 
Melicertum, Oken. Gonionemus, A. Ag. 
Family 5.—Laodiceida:. 
Laodicea, Less. Eaphsea, Lamx. 
Stauropbora, Br. Trichydra, Wright » 
Family 6.—Eucopida. 
Obelia, Ter. Sf LeS. Laomedea, Lamx. 
Eucope, Gfegenb. 
Family 7.— 
Oceania, Ter fy LeS. 
Eucbeilota, ALcCr. 
Clytia, Lamx. 
Platypyxis, Ag. 
OCEANIDAL 
"Wrigbtia, Ag. 
Tiaropsis, Ag. 
Ortbopyxis, Ag. 
Hincksia, Ag. 
Family 8.—JSertularidai. 
Dynamena, Lamx. Cotulina, Ag. 
Dipbasia, Ag. Lineolaria, Hincks. 
Ampbisbetia, Ag. Tbuiaria, Flem. 
Sertularia, Linn. Halecium, Oken. 
Ampbitrocba, Ag. 
Family 9.—Plumularida:. 
Aglaopbenia, Lamx. ISTemertesia, Lamx. 
Plumularia, Lmk. 
