342 KANSAS UNIVERSITY SCIENCE BULLETIN. 
show the vertebrze to be short and higher than in most 
Branchiosauria. 
The caudal series is represented by two sections. One of 
these sections is apparently from near the base of the tail, 
judging from the size of the caudal ribs preserved. The other 
section is from near the tip of the tail, and it shows the con- 
stituents to have been long and slender. Ribs are apparently 
absent on this section. The position of the two caudal sections 
shows that when the animal died it was coiled up much like a 
snake, so that in the fractured nodule three sections of the 
body are preserved. The tail was probably half as long again 
as the body. 
The ribs throughout the body are short, heavy and straight, 
with, in the dorsal series, a lateral and a distal expansion, 
which is taken as a distinctive specific character. Judging 
from imperfect impressions in the dorsal series, the ribs were 
attached to a transverse process of the centrum, thus agree- 
ing with other branchiosaurians in this respect. The ribs 
show a progressive decrease in length from the cervical region 
to the point of their disappearance on the tail. 
The pectoral girdle is represented by two elements, one of 
which is certainly the right clavicle, and the other is possibly 
the left clavicle, though its form is somewhat distorted by 
pressure. Both elements are in the form of an elongate spat- 
ula, with the dorsal surface greatly concave and the inner end 
acuminate. 
The right humerus is imperfectly preserved, though the im- 
pression allows one to gain an exact knowledge of its form. 
It lies under the right clavicle. Its ends are truncate with a 
contracted shaft and expanded extremities. The bone was ap- 
parently hollow. 
In another nodule (No. 804, Yale Museum) there is a single 
bone preserved, which resembles to a great extent a rib of the 
present species, although somewhat larger, and it has been 
provisionally identified as such. The element is very slightly 
curved, but it shows the expanded head of this species. (Plate 
Pa, 306%, hp) 
