182 KANSAS UNIVERSITY QUARTERLY. 
epiotics, a condition different from that described by Newton.* It 
may join the frontals in front, but a small portion of the parietals 
may intervene. 
The orbit 1s somewhat smaller than in /chthyodecfes and is sur- 
rounded by a thin ring of sclerotic bones similar to that found in 
the genus just mentioned. Just in front of the orbit there is a 
small triangular bone attached to the frontal above, which I take 
to be a preorbital. The same bone is figured by Newtony but not 
named or described by the author. Just in front of this there is a 
long slender bar of bone, which seems to articulate somewhere in 
the palatine region. On one side the anterior end is crushed down 
to near the posterior condyle of the maxillary, but on the other side 
it fits in just back of the superior condyle of the palatine, and as a 
palatine of another specimen shows a sutural surface at this point, 
I think it not unlikely that this is the correct position of the bone. 
This may be the bone that Newton? figured as a ‘‘nasal bone,” (?) 
although it is of an entirely different shape from that shown in the cut 
of his specimen. The bone Newton calls ‘‘jugal’’(?) 1 am inclined 
to think is one of the suborbital bones, as found in A7phactinus, 
especially as there seems to be a suture indicated between this and 
a bone just above which articulates with the jugal, (probably a 
suborbital) above. 
Owing to the crushed condition, the prefrontals are almost en- 
tirely covered by the ethmoid and frontal. The description of the 
palatine will be given with the next species., Parts of the opercular 
and preopercular bones are present. The first is a broad flat plate 
of bone which articulates with the byomandibular in a manner 
similar tothat found in AXvphactinus and /chthyodectes. The anterior 
border of the preoperculum is deeply concave, the anterior inferior 
extremity reaching forward to the angle of the mandible. The hyo- 
mandibular of this species is not visible. 
The vertebrae are deeply concave, with deep groves closely 
situated above for the neural arches. The ribs articulate with 
small ossicles set into deep pits on the side of the centrum. Just 
above these ossicles there is a deep pit on each side. 
A part of the shoulder girdle, including a fragmentary fin, is 
present. The fin seems rather small. . 
The skuli as a whole is especially remarkable for the extreme 
length of the mandible, and also the long predentary in front. 
This portion probably had a dermal covering similar to that cover- 
*l¢c., p. 444. 
TMCee sl sexoKekii\ie 
