NORTH AMERICAN EARLY TERTIARY BRYOZOA. 
17 
LISTS SHOWING GEOGRAPHIC AND GEOLOGIC DISTRIBUTION. 
LOWEST EOCENE (BRYOZOAN BED AT BASE OF AQUIA FORMATION). 
UPPER MARLBORO, MARYLAND. 
[v. r.=very rare; r.=rare ;-v. c.=very common; c.=common.] 
CHEILOSTOMATA. 
Membraniporina rimulata Ulrich, 1901 (v. r.). 
Ellisina spiculosa Ulrich, 1901 (r.). 
Ellisina (?) angusta Ulrich, 1901 (v. c.). 
Amphiblestrum heteropora Gabb and Horn, 1862 (r.). 
Bamphonotus laevis, new species (v. r.). 
Ptamenocella cylindrica, new species (v. r.). 
Lunularia reversa Ulrich, 1901 (r.). 
Euritina torta Gabb and Horn, 1862 (r.). 
Coscinopleura digitata Morton, 1S34 (r.). 
Macropora aquiae, new species (c.). 
Membraniporella modesta Ulrich, 1901 (r.). 
Membraniporella crassula Ulrich, 1901 (r.). 
Bathosella aspera Ulrich, 1901 (r.). 
Clieilopora (?) labiosa Ulrich 1901 (r.). 
Meniscopora subplana Ulrich, 1901 (c.). 
A.cantliionella simplex, new species (v. r.). 
CYCLOSTOMATA. 
Heteropora tecta Ulrich, 1901 (r.). 
Plagioecia subramosa Ulrich, 1901 (r.). 
Diaperoecia varians Ulrich, 1901 (r.). 
Diplosolen compactum, new species (r.). 
Leleythionia dicliotoma Gabb and Horn, 1862 (r.). 
Partretocycloecia dumosa Ulrich, 1901 (v. c.). 
MIDWAYAN BKYOZOA. 
[v. r.= very rare; r.= rare; v. c.=very common; c.=common.] 
Other occurrences. 1 
List of species. 
Brundidge, Ala- 
bama, 
Luverne, Crenshaw 
County, Alabama. 
1 mile north of Fort 
Gaines, Georgia. 
3 miles north of Scoo- 
ba, Kemper Coun- 
ty, Mississippi. 
2f miles northeast 
Ripley, Mississippi. 
M ab el vale, near 
Little Rock, Ar- 
kansas. 
CTENOSTOMATA. 
Terebripora, species undetermined 
CHEILOSTOM ATA . 
Pyripora parvicella, new species 
r. 
r. 
v. r. 
v. r. 
v. r. 
1 J=Jaeksonian. V=Vicksburgian. C=Claibonian. 
55899— 20— Bull. 106 2 
