43.4: Prof. Carl Vogt on 
**Gyeis alba. Phaeton eethereus. 
Lestris, sp. ine. flavirostris. 
Puffinus, sp. inc. Dysporus cyanops. 
, Sp. inc. *—— sula. 
, 8p. inc. 
The four species marked with an asterisk were observed by 
Mr. T. Peale on the Gilberts during Wilkes’s U.S. Explor- 
ing Expedition, and the two marked with two asterisks are 
mentioned by G. R. Gray as occurring there. 
Although my ornithological efforts look rather poor, I am 
otherwise very well satisfied with my investigations and 
collections. I have sent home thirty-two large cases of 
specimens, and among them a fine ornithological series. As 
I hope soon to visit the Carolines, I expect to be able to do 
more in my beloved branch of science, and to give greater 
satisfaction to my ornithological brethren. 
XLIII.—Archzopteryx macrura, an Intermediate Form 
between Birds and Reptiles. By Caru Voer, Professor in ° 
the University of Genevat. 
(Plate X IIT.) 
In 1861 Hermann von Meyer, the distinguished paleonto- 
logist, described, in Bronn and Leonhard’s ‘ Jahrbuch,’ a 
Bird’s feather found in the lithographic slate of Solenhofen, 
in Bavaria, belonging to the Upper Jurassic deposits. To 
the Bird revealed by this feather he gave the name of Arche- 
opteryx lithographica. 
Many of the learned believed it to be a skilful falsification. 
At that time the existence of Birds in the Jurassic epoch 
seemed as unlikely as that of Mammals in the Triassic. 
Doubts were soon dispelled by Prof. Owen’s memoir, pub- 
lished in the * Philosophical Transactions’ for 1863. Herein 
he described, as he alone knows how to do, a slab found by 
Dr. Haberlein, a physician at Pappenheim, which showed with 
remarkable clearness the hind-quarters of the Bird whence, 
+ Read at the Saint-Gall Meeting of the Congress of Swiss Naturalists, 
and translated from the ‘ Revue Scientifique,’ sér. 2, ix. p. 241 (13th Sept. 
1879). 
