338 
SJ5LACIIII. 
The following “genera” and “species” may possibly be founded 
upon the anterior teeth of undetermined Ccstraciontidoo, but their 
systematic position is uncertain ; — 
Dorutodus triempidatm, E. E. Schmid, Nova Acta Acad. Coes. 
Lcop.-Car. vol. xxix. no. 9 (1801), p. 10, pi. i. figs. 28-37 ; 
H. Eck, Form. bunt. Sandst. u. Muschelk. Oberschlesicn 
(1805), p. 01; and E. E. Schmid, Abh. Geol. Specialk. 
Preussen u. Thiiring. Staaten, vol. i. pt.ii. (1874), p. 50. — 
Keupor, Germany. 
Oomphodus agasgizii, A. E. Eeuss, Verstcin. bohm. Kreideform. 
pt. ii. (1840), p. 99, pi. xxi. figs. 22-25 ; A. Fritsch, Kept, 
u. Fische bohm. Kreideform. (1878), p. 10, woodc. fig. 20. 
— Cenomanian ; Bohemia. 
The following specimens in the Collection are referable to the 
latter “ genus ” : — 
41702. Complete tooth ; Chalk, Gravesend, Kent. 
Toulmin Smith Coll. 
P. 334. Two teeth ; Chalk, Charing, Kent. Harris Coll. 
Family SCYLLIID^. 
Dorsal fins without spines, the first situated above or behind the 
pelvic fins. No nictitating membrane. Teeth small, several series 
being generally in function. 
Genus P .AXj./Lj030YX«LIXJiy[^ Wagner. 
[Golehr. Anz. bay. Akad. Wiss. vol. xliv. 1857, p. 291.] 
First dorsal fin above or partly behind the pelvics ; origin of 
second dorsal in advance of the anal, which is small. Tail of 
moderate length. [Teeth unknown, but probably minute.] 
As pointed out by Wagner, the arrangement of the fins in this 
genus is suggestive of Oinglymostoma ; and Hasso describes * the ver- 
tebral column as indistinguishable from that of Scylliwm. 
Palseoscylliuin formosiunj Wagner. 
1857. Palccoscyllium formosum, A. W'^agner, Gelehr. Anz. bay. Akad. 
Wiss. vol. xliv. p. 291. 
* Natiirl. Syst. Ela.smobr., Besond. Tbeil, p. 252, pi. xxxiv. fig. 27. 
