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131 
MYLI0BATII)J3. 
Aetobatis meneghinii , E. Bassani, Atti Soc. Yeneto-Trent. Sci. 
Nat. yoI. v. (1878), p. 278.—Eocene ; N. Italy. 
Aetobatis omaliusi : Goniobatis omaliusi , H. Le Hon, Prelim. Mem. 
Poiss. Tert. Belgique, 1871, p. 10, woodc.—Pliocene; 
Belgium. 
Aetobatis omaliusi, var. curtidens, E. Delfortrie, Actes Soc. Linn. 
Bordeaux, vol. xxviii. (1871), p. 230, pi. xi. figs. 43-45.— 
Upper Miocene; Leognan, Gironde. 
Aetobatis omaliusi , var. latidens , E. .Delfortrie, tom. cit. p. 229, 
pi. xi. fig. 42.—Lower Miocene > Taulignan, Drome. 
Aetobatis perspicuus, J. Leidy, Proc. Acad. Nat. Sci. Philad. 1855, 
p. 396; also Journ. Acad. Nat. Sci. Philad. [2] vol. viii. 
(1877), p. 244, pi. xxxi. fig. 13.—Eocene (?) ; Monmouth 
Co., New Jersey, U. S. A. s- t // ■: . •* u 
Aetobatis profundus, E. D. Cope, Proc. Acad. Philad. 1867, p. 139 ; 
J. Leidy, Journ. Acad. Nat. Sci. Philad. [2] vol. viii. (1877), 
p. 246, pi. xxxi. figs. 19, 20.—Phosphate Beds ; South 
Carolina. 55 /?-/oj- c^c /f >o4- 
Aetobatis sulcatus , L. Agassiz, tom. cit. p. 326, pi. xlvi. figs. 4, 5. 
—Eorm. and loc. unknown. 7/Z // 
Aetobatis tardiveli , M. Rouault, Comptes Rendus, vol. xlvii. (1858), 
T9 
p. 101.—Miocene; Rennes, Ille-et-Yilaine, Franc A*?- 
JU1.4 
cr~xL _ 
A dental plate of Aetobatis is referred in error to Myliobatis yAn^, 
dixoni by E. Noetling, Abh. Geol. Specialk. Preuss. etc. vol. vi. pt. 3 <rQ'<re.JTorJ 
(1885), p. 27, pi. ii. fig. 3. Vertebrae from the Samland Eocene cxw 
are also doubtfully associated with this genus by Noetling, tom. cit. 
p. 29, pi. viii. figs. 3-5. 
Vertebrae supposed to be referable to Aetobatis are described by 
C. Hasse (Natiirl. Syst. Elasm., Besond. Theil, p. 157), from the 
Cretaceous and Tertiaries of the Continent. 
The genus and species Mesobatis eximius , Leidy 1 , have been 
founded upon a portion of the dentition from the Ashley River Phos¬ 
phate Beds, South Carolina, differing only from Aetobatis in the 
presence of a row of minute lateral teeth, occupying the interspaces 
of the bevelled ends of the broad teeth. 
A dermal tubercle from the Phosphate Beds of South Carolina 
is assigned to Ceratoptera (Miiller and Henle) under the name of 
C. unios , J. Leidy, Journ. Acad. Nat. Sci. Philad. [2] vol. viii. 
(1877), p. 248, pi. xxxiv. figs. 1, 2. 
1 Proc. Acad. Nat. Sci. Philad. 1855, p. 396 ( Aetobatis ); and Journ. Acad. 
Nat. Sci. Philad. [2] vol. viii. (1877), p. 244, pi. xxxi. fig. 12. 
