2 
LIST OF TYPES AND FIG DEED 
Actinoceras blakei9 A. H. Eoord, v. Orthoceras (Actinoceras) 
cochleatum (Schlotheim) : J. P. Blake. 
Actinoceras imbricatum (W. Hisinger): A. H. Foord, Cat. Foss. 
Ceph., British Museum, pt. i, 1888, p. 180, f. 24 a. Silurian : I. of 
Gothland. [64541.] 
Actinoceras imbricatum (W. Hisinger): A. H. Foord, Cat. Foss. 
Ceph., British Museum, pt. i, 1888, p. 180, f. 24 b. Silurian : I. of 
Gothland. [C. 2031.] 
Actinoceras imbricatum (W. Hisinger) : A. H. Foord, Cat. Foss. 
Ceph., British Museum, pt. i, 1888, p. 180, f. 24 c. Silurian : I. of 
Gothland. [C. 2711.] 
Actinoceras lyonii, C. Stokes, Trans. Geol. Soc. [2], vol. v, 1840, 
p. 707, pi. lix, f. 1. Ordovician: Igloolik Island, Fox Channel, 
Arctic America. [34046.] 
Actinoceras lyonii, C. Stokes : S. P. AVoodward, Quart. Joum. 
Geol. Soc. vol. xii, 1856, p. 379, pi. vi,f. 3. Ordovician (Black Elver 
Limestone): ISlew York State. [33462-3.] Iigure appears to have 
been drawn from these two specimens, undoubtedly parts of the 
same shell. 
Actinoceras richardsoni, C. Stokes, Trans. Geol. Soc. [2], vol. v, 
1840, p. 708, pi. lix, ff. 2, 3. Ordovician (Galena Limestone) : Lake 
Winnipeg, Y. America. [33422.] 
Actinoceras, v. also Orthoceras (Actinoceras). 
Aegoceras angulatum (E. F. v. Schlotheim) ; T. Wright, Lias Amm. 
(Mon. Pal. Soc.), pt. ii, 1879, pi. xiv, If. 5, 6 ; pt. iv, 1881, p. 319. 
Lower Lias (angulatif^-zone) : Lyme Eegis, Dorset. [C. 1921.] 
Aegoceras angulatum (E. F, v. Schlotheim) : T. Wright, v. also 
Aegoceras moreanum ^A. dT)rhigny): T. Wright. 
Aegoceras bechei (J. Sowerhy): T. WYight, Lias Amm. (Mon. Pal. 
Soc.), pt. iv, 1881, pi. xli, ff. 1, 2 ; pt. v, 1882, p. 3c0, Lower Lias 
(henleyi-zone) : Loc. (?). [C. 2210.] 
Aegoceras boucaultianum (A. d’Orbigny) : T. Wright, Lias Amm. 
(Mon. Pal. Soc.), pt. ii, 1879, pi. xviii, f. 1 ; pt. iv, 1881, p. 327. 
Lower Lias (hucJdandi-zone): Frodingham, Linoolnshu*e. [C. 3125.] 
