98 
ACTINOPTEEYGII. 
p. 196, pi. sliii,, pi. xliv. figs. 1-4, afid Proc. Amer. Phil. 
Soc. Yol. xii. (1872), p. 335. SaurocepJialus tliaumas, 
E. D. Cope, Proc. Amer. Phil. Soc. vol. xi. (1871), p. 533. 
‘' = Xiphactinus audax^’’’ A. Stewart, Kansas IJniv. Quart. 
[A] vol. vii. (1898), p. 119.—Upper Cretaceous (Niobrara 
Group); Smoky Hill, Kansas. [Jaws, ifec.; Cope Col¬ 
lection.] 
Fragments of jaws of large species of PortJieus from the Turonian 
of Saxony and Bohemia are also described under the name of 
Hypsodon Jewesiensis, Ag., by H. B. Geinitz, Palseontogr. vol. xx. 
pt. ii. (1875), p. 222, pi. xlii. (in part), and A. Eritsch, Kept. u. 
Eische bohm. Kreideform. (1878), p. 40, pi. vi. 
The names PortJieus angidatus and PortJieus gladius were origin¬ 
ally given by Cope to fragments of ProtospJiyrcena (see Part ITT. 
pp. 413, 414). 
Genus SPATHODACTYLUS, Pictet. 
[Eoss. Terrain Neocom. Yoirons (Paleont. Suisse), 1858, 
pt. iii. p. 2.] 
Trunk robust and moderately elongated, but laterally compressed. 
Teeth hollow, in deep sockets, not compressed to a sharp edge; 
those of the maxilla, as also those of the dentary, nearly uniform 
in size. Vertebrae approximately 60 in number, about 25 being 
abdominal; the centra exhibiting two deep, longitudinally extended 
pits on each side ; ribs comparatively stout, each flattened and 
impressed with a longitudinal groove. Paired fins with few much- 
expanded rays, the length of the pectoral rays not exceeding that of 
the head with opercular apparatus ; dorsal fin short, opposed to 
the anal, Avhich is much extended and is elevated into a pointed lobe 
in front; caudal fin deeply forked. Scales smooth. 
Spathodactylus neocomiensis, Pictet. 
1858. SpatJiodactylus neocomiensis, E. J. Pictet, Eoss. Terrain Neocom. 
Voirnns (Palleont. Suisse), pt. iii. p. 2, pis. i., iii. 
1882. Spathodactylus neocomiensis^ E. Bassani, Denkschr. k. Akad. 
Wiss., math.-naturw. Cl. vol. xlv. p. 247. 
Type. Nearly complete fish ; Geneva Museum. 
The type species, attaining a length of about one metre. 
Maximum depth of trunk somewhat exceeding the length of the 
head with opercular apparatus, and contained rather more than 
three times in the length from the pectoral arch to the base of 
