78 BULLETIN 51, UNITED STATES NATIONAL MUSEUM. 
P. 754. Notes on a collection of fishes obtained in the Gila River, at 
Fort Thomas, Arizona, by Lieut. W. L. Carpenter, U. S. 
Army. By Philip H. Kirsch. 
pp. 555-558. 
’ P. 755. Notes on some neotropical birds belonging to the United States 
National Museum. By Hans von Berlepsch. 
pp. 559-566. 
P. 756. On the classincation of the mail-cheeked fishes. By Theodore 
Gill. 
pp. 567-592. 
P. 757. Gleanings among the Pleuronectids, and observations on the 
name Pleuronectes. By Theodore Gill. 
pp. 593-606. 
P. 758. Note on the genus Spheroides. By Theodore Gill. 
pp. 607-608. 
P. 759. A list of fishes from a small tributary of the Poteau River, 
Scott County, Arkansas. By Charles H. Gilbert. 
pp. 609-610. 
P. 760. Descriptions of new Braconide in the collection of the U.S. 
National Museum. By William H. Ashmead. 
pp. 611-671. 
VOLUME XII, CONTAINING PAPERS 761-789. 
Smithsonian Institution. | United States National Museum. | —— | 
Proceedings | of the | United States National Museum. | —— | 
Volume XII. | 1889. | | Washington: | Government Printing 
Office. | 1890. 
8vo., pp. Vili, 1-686, 23 pls., 14 figs. 
' P. 761. A review of the genus X¢phocolaptes of Lesson. By Robert 
Ridgway. 
pp. 1-20. 
P. 762. A review of the genus Sclerurus of Swainson. By Robert 
Ridgway. 
pp. 21-81. 
P. 763. Descriptive notes of new genera and species from the Lower 
Cambrian or Qlenellus zone of North America. By Charles 
D. Walcott. 
pp. 33-46. 
P. 764. New North American Acridide, found north of the Mexican 
boundary. By Lawrence Bruner. 
pp. 47-82, 1 plate. 
| P. 765. Contributions to the natural history of the Commander Islands. 
A. Contributions to the history of. Pallas’ cormorant. By 
Leonhard Stejneger. 
B. Description of some bones of Pallas’ cormorant, Phala- 
crocorax perspicillatus. By Frederic A. Lucas, 
pp. 83-94, 3 pls, 
