O. C. Marsh—New Pterodactyl. 233 
very much larger than this star, which was 6 Cancri, and its 
light was quite red. e appearance of the disc was such as 
to lead me to believe that it was situated beyond the sun. 
I have not had an opportunity to make any calculations suf- 
ficient to determine whether the place observed can be recon- 
ciled with the reported observations of spots supposed to have 
been planets in transit across the sun. This I will do hereafter. 
The star marked (4), and supposed to be € Caneri, was 0° 85’ 
south from the sun, as determined from the place marked on 
the paper circle. If the telescope was disturbed by the wind 
before the pointing was marked, the disturbance would prob- 
ably be wholly in right ascension, since the motion in declina- 
tion was pretty nearly clamped. In regard to the star (a), 
which I consider to be the planet sought, there is no uncertainty 
whatever, beyond the unavoidable errors of the record as made. 
I consider the place given to be trustworthy within 5’ of arc. 
It is to be hoped that persons who have made suitable photo- 
graphs during the totality will examine the plates carefully in 
the region indicated. It is possible that the planet may appear 
upon some of them. 
My station for observation was at Separation, Wyoming Ter- 
ritory, on the Union Pacific Railroad. It is near the summit 
of the Rocky Mountains, in a circular walled plain of several 
miles diameter, at an elevation of about 7,200 feet above the 
level of the sea. It is proper to add further, that the major 
part of the expenses of my expedition were defrayed by the 
U.S. Naval Observatory from the appropriation made by Con- 
gress for the observation of the eclipse. 
Ann Arbor, August 13, 1878. 
ArT. XXVL—New Pterodactyl from the Jurassic of the Rocky 
Mountains ; by Professor O. C. MARSH. 
THE Pterosaurian remains hitherto discovered in this coun- 
try are all from the Cretaceous, and most of them belonged to 
animals of gigantic size. So far as known, they were all desti- 
tute of teeth, and hence belong to the order Pleranodontia. A 
characteristic specimen recently found in the Upper Jurassic of 
: soning, and now in the Yale College Museum, is the first 
Indication of this group of reptiles from this formation in 
America. The specimen, which is in good preservation, is the 
distal portion of the right wing metacarpal, and indicates a 
small pterodactyl having a spread of wings of four or five feet. 
The shaft of this bone at its upper portion is oval in transverse 
section, but near the condyle it is sub-tribedral, with a distinct 
