240 
ACTIXOPIERYGII. 
Agassiz, Poiss. Poss. vol. ii. pfc. i. 1833, p. 16, pt. ii. 1844, p. 227, 
pi. lxix. a. figs. 27, 28 ; F. A. Quenstedt, Handb. Petrefakt. 1852, 
p. 212, pi. xvi. fig. 3 ; ? H. E. Sauvage, Catal. Poiss. Form. Second. 
Boulonnais, 1867, p. 41, pi. ii. fig. 12, and Bull. Soc. Geol. France, 
[3] vol. viii. 1880, p. 526) from the Corallian of Durrheim, Baden, 
and Schnaitheim, Wiirtemberg (possibly also Kimmeridgian and 
Portlandian of H. France), and Gyrodus jurassicus (L. Agassiz, 
Poiss. Foss. vol. ii. pt. i. 1833, p. 16, pt. ii. 1844, p. 229, pi. lxix. a. 
figs. 25, 26 ; F. A. Quenstedt, Handb. Petrefakt. 1852, p. 212, 
pi. xvi. fig. 5 ; K. Fricke, Palseontogr. vol. xxii. 1875, p. 374, pi. xx. 
figs. 17, 18) from the Kimmeridgian of Soleure, Switzerland, the 
Corallian and Kimmeridgian of Hanover, and the Corallian of 
Schnaitheim, Wiirtemberg. Of the latter the type specimen is in 
the Museum of Soleure, and the two species are represented in the 
Collection by the following examples :— 
22493*, 22658. Two unworn detached teeth of G. umbilicus : Coral¬ 
lian, Schnaitheim. Purchased , 1848. 
42884. Plaster cast of the type specimen of G. jurassicus, being 
the two associated splenial bones ; Kimmeridgian, Soleure. 
Van Breda Coll. 
P. 3778. Portion of left splenial dentition, probably the specimen 
referred to G. jurassicus by Agassiz, Poiss. Foss. vol. ii. 
pt. ii. p. 230; Soleure. Enniskillen Coll. 
P. 5952. Left splenial dentition of the form referred to G. jurassicus 
by Fricke, loc. cit. ; Kimmeridgian, Holzen, near Eschers- 
hausen, Hanover. Purchased , 1889. 
P. 3751. Portion of abraded splenial dentition, labelled u Py cnodv.s 
S'phoerodus ” by Agassiz ; Portlandian, Keuchatel, Switzer¬ 
land. Enniskillen Coll. 
Gyrodus cuvieri, Agassiz. 
1833-44. Gyrodus cuvieri, L. Agassiz, Poiss. Foss. vol. ii. pt. i. p. 16, 
pt. ii. p. 230, pi. lxix. a. figs. 21-23. 
1867. Gyrodus cuvieri, H. E. Sauvage, Catal. Poiss. Form. Second. 
Boulonnais (Mem. Soc. Acad. Boulogne-sur-Mer, vol. ii.), p. 43, 
pi. ii. fig. 13. 
1875. Gyrodus oimatissimus, J. F. Blake, Quart. Journ. Geol. Soc. 
vol. xxxi. p. 223. [Dentition ; British Museum.] 
1880. Gyrodus oi'natissimus, B. Damon, Geol. Weymouth, ed. 2, pi. xi. 
figs. 1-4, 7-9 {non fig. 6). 
1880. Gyrodus cuvieri, H. E. Sauvage, Bull. Soc. Geol. France, [3] 
vol. viii. p. 526. 
