256 O. C. Marsh—The Wings of Pterodactyles. 
without a claw. This digit is well shown in the right wing 
represented in Plate III, and also in the restoration, given 
elow, in figure 2. 
In the restoration here attempted, the writer has endeavored 
to reproduce (1) the parts actually present or clearly indicated 
in the specimen described, and (2) those which the former 
seemed to require to complete the outward form in life. Th 
Figure 2.—Restoration of Rhamphorhynchus phyllurus, Marsh ; 
one seventh natural size. 
membrane at the base of the tail may have been somewhat less 
in extent, and the fold of the skin above the fore-arm either 
more or less developed than here represented, but the facts 
now known render the outlines here given more than probable. 
The hands are represented with the palms forward. 
distinct, however, is shown, aside from the difference in size, 
by the complete ankylosis of the scapula and coracoid, and by 
the fifth digit of the hind foot being well developed, and hav- 
ing three phalanges. In the name Rhamphorhynchus phyllurus, 
here proposed for the species, the latter designation refers to 
the leaf-shaped caudal appendage, which appears to be one of 
its most characteristic features. 
_ For the long delay in the description of this important 
European specimen, the writer can only plead l’embarras des 
richesses nearer home. 
Yale College, New Haven, March 14, 1882. 
EXPLANATION OF PLATE III. 
Rhamphorhynchus phyllurus, Marsh. Natural size. 
The caudal membrane is seen from the left side. 
_ ‘The animal lies upon the back, and the under surfaces of the wing membranes 
e & 
