ADDENDA ET CORRIGENDA. 
459 
P. 75. Add : —Pristis attenuaius, E. D. Cope, in W. C. Kerr’s Bep. 
&eol. Surv. N. Carolina, vol. i. (1875), Appendix, p. 29. 
—Tertiary ; N. Carolina. 
Pristis brachyodon , E. D. Cope, Proc. Boston Soc. 
Nat. Hist. vol. xii. (1869), p. 312, and in W. C. Kerr, 
op. cit. —Greensand ; Virginia. 
P. 86. Raja sunilis. —See explanation of Plate IV. 
P. 88. Add -.—Raja dux, E. D. Cope, Proc. Acad. Nat. Sei. Philad. 
1867, p. 141.—Miocene; United States, America. ~ c/ux 
P.89. Add :— Platyrhina bolcensis, R. Molin, Sitzungsb. m atU- C h e 
phys. Cl. k. Akad. Miss. Wien, vol. xl. (1860), p. 587: 
Narcopterus bolcanus , L. Agassiz, Poiss. Eoss. vol. iii. 
p. 382** (name only).—Upper Eocene; Monte Bolca. 
P. 90. Torpedo gigantea has also received the name of Narcine 
gigantea, R. Molin, Sitzungsb. math.-phys. Cl. k. Akad. 
Wiss. Wien, vol. xl. (1860), p. 585. 
P. 108. Add : Psammodus bretonensis, J. E. Whiteaves, Canadian 
Naturalist, vol. x. (1881), p. 36.—Coal-Measures ; Nova 
Scotia. 
A species of Psammodus (P. antiquus, Newberry) from the 
Devonian Corniferous Eimestone of Ohio is also described 
in the Bull. National Institute, 1857 ( teste J. S. New¬ 
berry, Rep. Geol. Surv. Ohio, vol. i. pt. ii. p. 265). 
P. 131. Add : —Goniobatis agassizii , Ii. Blanchet, Bull. Soc. Vau- 
doise, vol. vi. (1860), p. 472, with plate.—Molasse; 
Moliere, Switzerland. 
Plinthicus , E. D. Cope (Proc. Boston Soc. Nat. Hist, 
vol. xii. 1869, p. 316), doubtfully distinct from Aetobatis. 
The type species is P. stenodon , E. D. Cope, ibid.— 
Miocene; New Jersey. 
P. 143. Agassiz recognizes four varieties of the teeth of Ptychodus 
polygyrus (Joe. cit.), three of which, he suggests, may be 
named P. concentricus, P. marginalis , and P. sulcatus, if 
they eventually prove to be distinct species. 
P. 205. Add : Pcecilodus foveolatus, E. M‘Coy, Ann. Mag. Nat. 
Hist. [2] vol. ii. (1848), p. 129, and Brit. Pakeoz. Eoss. 
(1855), p. 639, pi. 3 g. fig. 11 ; J. V . Davis, Trans. Boy. 
Dublin Soc. [2] vol. i. (1883), p. 445, pi. liii. fig. 26.— 
Carboniferous Limestone; Derbyshire. 
P. 228. A doubtful tooth, from the Keokuk Limestone of Illinois, 
is also named Chomatodus ? costatus, Newberry and 
Worthen, Pal. Illinois, vol. ii. (1866), p. 85, pi. v. 
%• 17. 
2 h 2 
