498 Bulletin American Museum of Natural History. [Vol. XXXIV, 
below, and lateral to each side. From here upward the vertebra becomes 
narrower. Instead of a neural spine there is a broad and low lamella. At 
the posterior border of the centrum are two distinct small facettes for the 
heemapophysis, but none at the anterior end. 
Splenial: Two big splenial bones are preserved, 35 and 32 cm. long; they 
are the right and the left. The smaller (left) one shows distinctly (and 
-I think the longer does too) a symphysial face of 9 cm. in length; the anterior 
extremity of it is missing (Fig. 20). The ventral border of these bones is 
2-2.5 em. thick. In the anterior part they are 3.5, in the posterior 7 cm. 
high. ‘They belong to a jaw at least 90 cm. long. Possibly these splenials 
do not belong to the same individual, as one of them seems to be a very 
little larger in every dimension.  —s_ | | . | 
Dermal bones: All scutes lying with Episcoposaurus bones (but also with 
SNe 
V3 
Uh 
be 
» 
U f 
Fig. 21. ?Episcoposaurus horridus. Dermal scute from the throat-shield. x i. 
Figs. 22-24. ?Episcoposaurus horridus. Dermal scutes. xX 2. 
other Phytosaurs mixed with them) are of the Mystriosuchid type. If one 
of them really belonged with Episcoposaurus it is to be expected that Epi- 
scoposaurus had a low snout in its skull. One of these scutes is a polygonal 
one belonging with the throat-shield (Fig. 21). Two others, rather small, 
possess a very high, steep and sharp longitudinal ridge. Two others (Fig. 
22-23) of rather tile-like form are badly preserved. The biggest and 
best one of the scutes (Fig. 24) has a high longitudinal spine-like elevation, 
rising obliquely and having its highest point near the short border of the 
scute; a slight sculpture radiates from there. 
Only new discoveries of Episcoposaurus will make it possible to deter- 
mine which of these scutes belong with it; whether the above described 
scutes are all from different parts of the same animal, which I doubt, 
or whether they belong to different animals. 
