48 
LIST OF TYPES AND FIGURED 
Cyrtoceras depressum, G. A. Goldfuss : A. H. Foord, Cafe. Foss. 
Ceph., British Museum, pt. i, 1888, p. 263, ff. 46 a, b. Middle 
Devonian : Gerolstein, Eifel. [66380.] 
Cyrtoceras fimbriatum, J. Phillips, Pal. Foss. Cornwall, &c., 1841, 
p. 114, pi. xliv, f. 214 a. Middle Devonian : Newton Bushel, 
S. Devon. [C. 1748.] 
Cyrtoceras intermedium ?, F. M‘Coy : J. F. Blake, Brit. Foss. Ceph. 
pt. i, 1882, p. 179, pi. xviii, f. 13. Menlock series : Dudley. 
[83602.] 
Cyrtoceras macrum, J. F. Blake, v. Cyrtoceras plebeium 
(J. Barrande) : J. F. Blake. 
Cyrtoceras nautiloideum, J. Phillips, Pal. Foss. Cornwall, &c., 1841, 
p. 116, pi. xlvi, f. 220 a. Middle Devonian : Newton Bushel, Devon. 
[C. 1749.] 
Cyrtoceras nodosum, J. Phillips, Pal. Foss. Cornwall, &c., 1841, 
p. 116, pi. xlvi, f. 221. Middle Devonian : Newton Bushel, Devon. 
[C. 1747.] 
Cyrtoceras obliquum, A. H. Foord, Cat, Foss. Ceph., British Museum, 
pt. i, 1888, p. 269, ff. 47 a, b. Middle Devonian : Gerolstein, Eifel. 
[66378.] 
Cyrtoceras plebeium (J. Barrande) : J. F. Blake, Brit. Foss. Ceph., 
pt. i, 1882, p. 176, pi. xix, f. 5. Wenlock Limestone: Dudley. 
[73909.] Named Cyrtoceras magrum in explanation of Plate. 
Cyrtoceras praecox, J. W. Salter : J. F. Blake, Brit. Foss. Ceph. pt. i, 
1882, p. 166, pi. xviii, f. 6. Upper Tremadoc : Garth, near Port- 
madoc, Carnarvonshire. [C. 4059.] 
Cyrtoceras sp., E. Etheridge, Quart. Journ. Geol. Soc. vol. xxxiv, 
p. 608, no figure. Orthoceras arcticum^ A. H. Foord, Cat. Foss. Ceph., 
British Museum, pt. i, 1888, p. 38, ff. 3 a-d. Silurian (Niagara 
Formation) : Offley Island, Kennedy Channel, Arctic America (lat. 
81° 16'). [89169.] 
Cyrtoceras sp., J. W. Salter, Quart. Journ. Geol. Soc. vol. vii, 1851, 
p. 173, pi. X, f. 8. Middle Bala ; Ardwell, Ayrshire. [C. 3436.] 
