214 
ACTIXOPTERYGII. 
p. 461, pi. xiv. figs. 2, 3.—Bathonian ; Marquise. [Right 
splenial; Boulogne Museum.] 
Mesodon liecJeeli , A. Wagner, Abh. k. bay. Akad. Wiss., math.- 
phys. Cl. vol. ix. (1862), p. 345, pi. i. fig. 5.—Lower 
Kimmeridgian (Lithographic Stone); Solenhofen, Bavaria. 
[Imperfect dentition in fragmentary fish ; Palseontological 
Museum, Munich.] 
Mesodon morinicus , H. E. Sauvage, Bull. Soc. Geol. France, [3] 
vol. viii. (1880), p. 528, pi. xix. fig. 2;-— PortIandIan~T 
N. France. [Portion of left splenial; School of Mines, 
Paris.] 
Mesodon jpusillus, K. Fricke, Palseontogr. vol. xxii. (1875), p. 367, 
pi. xix. fig. 14, pi. xx. figs. 3, 4.—Kimmeridgian ; Hanover. 
[Upper and lower dentition.] 
Mesodon radiatus : Gyrodus radiatus , L. Agassiz, Poiss. Foss, 
vol. ii. pt. ii. (1844), p. 232,pi. lxix. a. fig. 20.—Bathonian; 
Caen, Normandy. [Vomer ] 
Mesodon robustus : Pycnodus robustus , J. Cornuel, Bull. Soc. Geol. 
France, [3] vol. viii. (1880), p. 159, pi. iii. fig. 22.—Neo- 
comian; Saint Dizier, Creuse. [Portion of left splenial; 
Cornuel Collection.] 
Mesodon sauvagei : Pycnodus sciuvagei , F. J. Pictet, Mem. Soc. 
Linn. Normandie, vol. xvi. no. 1 (1872), p. 19, pi. i. fig. 5 ; 
J. Cornuel, Bull. Soc. Geol. France, [3] vol. xi. (1883) 
p. 18, pi. i. figs. 1-3.—Portlandian; Haute Marne. 
[Vomer ; Royer Coll.] 
An undescribed right splenial of Mesodon , with very irregular 
teeth, from the Jurassic of Mejdel Shems, near Caesarea Philippi, is 
preserved in the Museum of the Syrian Protestant College, Beyrout. 
Indeterminable detached teeth and miscellaneous portions of 
jaws with widely spaced teeth, apparently of Mesodon , are recorded 
from the Neocomian of Europe under the name of Pycnodus couloni ; 
hut the specific characters even of the dentition are not as yet 
defined. The name has been given to detached teeth from Neu- 
chatel (L. Agassiz, Poiss. Foss. vol. ii. pt. ii. 1844, p. 200, and 
P. de Loriol & V. Gillieron, Mem. Soc. Helvet. Sci. Nat. vol. xxiii. 
1869, no. 5, p. 5, pi. i. figs. 5-7); detached teeth from Sainte 
Croix, Switzerland, and Dept. Ain, France, and an imperfect 
splenial from Auxerre, France (Pictet & Campiche, Foss. Terrain 
Cret. St. Croix, pt. i. 1860, p. 57, pi. vii. figs. 5-17, with reference 
to P. Gervais, Zool. et Pal. Franc. 1852, pi. lxix. fig. 22); other 
detached teeth from Piedmont (E. Sismonda, Mem. R. Accad. Sci. 
Torino, [2] vol. xix. 1861, p. 455, pi. i. figs. 1-11) ; an imperfect 
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