INDEX. 
[Names in italic are of synonyms; figures in black-face type show location of descriptions; figures in 
italic refer to illustrations.] 
, Acanthoclema 
asperum 
6, 8, 28, 58, 59, 63, 05, 70, 106, ll 
Acknowledgments to those aiding 
Allonema 
Page. 
.. 58 
4, 
?, 121, 132 
1 
13 
waldronense 6, 11, 13, 63, 70, 72 
Amplexoporidse 37 
Arthropora 13 
Arthrostylidse 58-59 
Ascodictyon 14, 15 
radians 12 
radiciforme 10, 63 
siluriense 6, 10, 11, 14, 63, 72 
stellatum 10, 14 
var. siluriense 14, 63 
Ascodk'tyonidse 
Astrocerium constrictum. 
Aulopora compressa 
consimilis 
SP 
14 
46 
lti 
16,63 
15 
B. 
Batostomella 28-29 
aspera 58, 63 
granulifera 4, 
6, 8. 28-29, 35, 63, 65, 70, 90, 116, 120 
Batostomellidse 2, 28-36 
Berenicea 10-17,18 
consimilis 6, 16, 16-17, 63, 65, 74 
elegans 16, 63 
membranacca 16, 63 
Bibliography 8-11 
Bryozoa, abundance of 4 
changes in 2 
collecting of 4 
descriptions of 11-63 
distribution of 3-4 
previous work on 1 
range and abundance of 6-7 
Buildwas beds, bryozoa of 8 
Bythopora 29 
spinulosa 6, 8, 29, 63, 65, 70, 90, 116 
C. 
Callopora 8, 40-43 
aspera 8, 9, 32, 63 
clausa 6, 8, 40, 42, 63, 94 
elegantula 6, 8, 9, 40-41, 63, 70, 98, 124 
florida 8, 9, 22, 38, 63 
laminata 8, 9, 22, 63 
magnopora 6, 41, 42-43, 63, 94, 124 
nana 41, 42 
nummi/ormis 8, 27, 63 
perelegans 41 
Page. 
Callopora ramosa 41 
sp 35 
Calloporella nummi/ormis 27, 63 
Calloporid;e 40-43 
Cayugan time, b ryozoa of 2 
Ceramopora 8, 18-20, 21 
foliacea 8, 25, 63 
imbricata 6, 8, 9, 18, 19, 20, 27, 63, 76 
incrustans 8, 24, 63 
labecula 20 
niagarensis 6, 8, 19-20, 21, 63, 74 
orbiculata 20 
Ceramoporella , 20-2 1 , 24 
distincta 21 
irregularis 6, 21, 63, 82 
orbiculata 6, 9, 20, 63, 70, 82 
Ceramoporidae 14, 18-22 
Chsetetes expansus 9, 26, 63 
Chilostomata 2, 39 
Chilotrypa 9, 24-25, 62 
coalescens 24, 25, 63 
ostiolata 4, 6, 8, 24-25, 63, 65, 70, 80, 82 
Clathropora 8,9,56 57 
alcicornis 6, 8, 56-57, 63, 104 
f rondosa 6, 8, 9, 56, 63, 106 
f rondosa intermedia 6, 56, 63, 104 
intermedia 9, 56, 63 
Clonopora 18 
Cceloclema 21 , 59, 62 
cavernosa 6, 21 , 63, 70, 112 
Constellaria 39 
Constellariidse 37-39 
Coscinium 9 
Cryptostomata 2, 48-63 
Ctenostomata 2, 11-14 
Cumulipora 39 
Cyclostomata 2, 14-26 
Cyrtia 5 
D. 
Diamesopora 9, 59, 62-63 
dichotoma 6, 8, 61, 62-63, 70, 106, 117, 134 
Diastopora consimilis 10, 16, 63 
Diastoporclla consimilis 16 
Diastoporidse 14-17 
Diploclema : 9, 17-18 
regularis 17 
sparsa 17 
sparsum 6, 8, 1 7 , 63, 65, 70, 74, 112, 132 
sparsum var. argutum 6, 17-18, 63, 70, 74 
Diplotrypa 47-48 
milleri 27, 63 
walked 6, 28, 35, 47-48, 63, 92, 120 
135 
