22 Coel. 
XVI. CGELEXTERATA. 
+ RUGOSA. 
Acervularia gracilis (Billings), p. 221 ; Lambe (75). 
Arachnopliyllum diffluens (M. Edw.-Haine); eximium (Billings) pp. 244, 
245; LuiMBE (75). 
Chonophyllum canadense (Billings), p. 222 ; nymphale (Bill.), p. 251; Lambe 
. ,( 75 )' 
Clisiophyllum billingsi (Dawson), p. 247 ; Lambe (75). 
Columnaria rugosa Billings = Palceophyllum rugosum Billings; Lambe (75). 
Cyathophyllum articulatum (Wahlenberg), p. 219; anticostiense Billings, 
p. 237; spenceri , n. sp., p. 238, Devonian; dawsoni , n. sp., p. 239, 
Lower Carboniferous; Lambe (75). 
Cystiphyllum niagarense (Hall), p. 224; aggregatum (Billings), p. 225; 
vesiculosum (Gldfs.), p. 257; Lambe (75). 
Hadrophyllum woodi , n. sp., p. 129; Grabau (44). 
Lithostrotion macounii , n. sp., Lower Carboniferous, British Columbia; 
Lambe (75). 
Lonsdaleia pictoense (Bill.), p. 248; Lambe (75). 
Omphyma eriphyle (Billings), p. 243 ; Lambe (75). 
Phillipsastrcea billingsi Calvin, p. 249; verneuili M.-Edw. Haine, p. 250; 
Lambe (75). 
Zaphrentis gigaiitea (Lesnem), p. 252; minas Daws., p. 254; mirabilis 
Bill., p. 255; Lambe (75). 
f TABULATA. 
General Biology. 
Monographs. Heliolitidce —Distribution world-w T ide in Silurian and De¬ 
vonian Strata, pp. 31-34; Classification, pp. 35-37; Natural limits of the 
group, pp. 24-30: Gemmation of 3 kinds, (1) Coenenchymal, (2) Intra- 
calicinal, and (3) Epithecal, p. 19; H. contrasted in a table with the 
Favositidce, p. 50; Structure and Gemmation of Heliolites interstinctus L., 
pp. 41-48; var. ( decipiens) MacCoy, pp. 48-53; Lindstrom (78); inde¬ 
pendent monograph of the group; Kiar (68); allied Mesozoic corals; 
Oppenheim (100). 
Systematic. 
Canavaria , n. g., relation to Alcyonaria and Tabulata, p. 236 ; Volscorum, 
n. sp., Mesozoic Tabulate-like Coral, p. 231; capriotica , n. sp., p. 234; 
Oppenheim (100). 
Diphyphyllum ccespitosum (Hall); multicaule (Hall); simcoense (Hall), 
pp. 240-243; Lambe (75). 
Lichenaria typa W. & S., Tabulate Coral from Ordovician of Minnesota; 
Sardeson (114). 
Monotrypa amplectens , n. sp., p. 137 ; Grabau (44). 
Tetradium apertum Safford, from the Lower Silurian of Beeren Eiland; 
Lindstrom (79). 
Ubaghsia, n. g., favosites, n. sp., p. 226. Mesozoic Tabulate-like Coral; 
relation to Alcyonaria and Tabulata, p. 236; from the Upper 
Senonian of Maastricht; resembles Favosites ; probably allied to 
Heliolites ; there is no trace of ccenenchyma; Oppenheim (100). 
