PROCEEDINGS 71 



Proc. 

 Na 



759. A list of fishes from a small tributary of the Poteau River, Scott Count)-, 



Arkansas. By Charles H. Gilbert. Pp. 609-610. Sept. 25, 1889. 



760. Descriptions of new Braconidae in the collection of the U. S. National Museum. 



By William H. Ashraead. Pp. 611-656, Sept. 25, 1889; pp. 657-671, Sept. 27, 

 1889. 



Volume 12 



Proceedings of the United States National Museum, vol. 12. Pp. i-viii (title page, 

 advertisement, table of contents, list of illustrations, dates of publication of 

 articles, and list of errata) ; pp. 1-652 (Proceedings papers 761-789) ; pp. 653- 

 686 (index); 14 figs., 23 pis. 1890. 



761. A rcvievp of the genus Xiphocolaptes of Lesson. By Robert Ridgway. Pp. 1-20. 



Feb. 5, 1890. 



762. A review of the genus Sclerurus of Swainson. By Robert Ridgway. Pp. 21-31. 



Feb. 5, 1890. 



763. Descriptive notes of new genera and species from the Lower Cambrian or 



Oleneilus zone of North America. By Charles D. Walcott. Pp. 33-46. Feb. 

 5, 1890. 



764. New North American Acrididae, found north of the Mexican boundary. By 



Lawrence Bruner. Pp. 47-82, 1 pi. Feb. 5, 1890. 



765. Contributions to the natural history of the Commander Islands. A. — Contri- 



butions to the history of Pallas' cormorant. By Leonhard Stejneger. Pp. 

 83-88. B. — Description of some bones of Pallas' cormorant (Phalacrocorax 

 Perspicillattis). By Frederic A. Lucas. Pp. 88-94, 3 pis. Feb. 5, 1890. 



766. Description of two new species of snakes from California. By Leonhard Stej- 



neger. Pp. 95-99, 3 figs. Feb. 5, 1890. 



767. Scientific results of explorations by the U. S. Fish Commission steamer Alba- 



tross. No. L — Birds collected on the Galapagos Islands in 1888. By Robert 

 Ridgway. Pp. 101-128, 6 figs. Feb. 5, 1890. 



768. Scientific results of explorations by the U. S. Fish Commission steamer Alba' 



tross. No. II. — Birds collected on the Island of Santa Lucia, West Indies, 

 the Abrolhos Islands, Brazil, and at the Straits of Magellan, in 1887-'88. 

 By Robert Ridgway. Pp. 129-139. Feb. 5, 1890. 



769. Scientific results of explorations by the U. S. Fish Commission steamer Alba- 



tross. No. III. — Report on the batrachians and reptiles collected in 1887-'88. 

 By E. D. Cope. Pp. 141-147. Feb. 5, 1890. 



770. Scientific results of explorations by the U. S. Fish Commission steamer Alba- 



tross. No. IV. — Descriptions of new species of fishes collected at the Gala- 

 pagos Islands and along the coast of the United States of Colombia, 1887-'88. 

 By David Starr Jordan and Charles Harvey Bollman. Pp. 149-183. Feb. 

 5, 1890. 



771. Scientific results of explorations by the U. S. Fish Commission steamer Alba- 



tross, No. V. — Annotated catalogue of the insects collected in 1887-'88. By 

 L. O. Howard. Pp. 185-216. Feb. 5, 1890, 



772. Scientific results of explorations by the U. S. Fish Commission steamer Alba- 



tross. No. VI.— List of the plants collected in Alaska in 1888. By George 

 Vasey. Pp. 217-218. Feb. 5, 1890. 



773. Scientific results of explorations by the U. S. Fish Commission steamer Alba- 



tross. No. VII. — Preliminary report on the collection of Mollusca and 

 Brachiopoda obtained in 1887-'88. By William Healey Dall. Pp. 219-362, 

 10 pis. Mar. 7, 1890. 



774. Notes on the occurrence of Gillichthys y-cauda at San Diego, California. By 



Charles H. Gilbert. P. 363. Mar. 4, 1890. 



775. Description of a new genus and species of inarticulate brachiopod from the 



Trenton limestone. By Charles D. Walcott. Pp. 365-366, 4 figs. Mar. 4, 

 1890. (Advance sheets issued Dec. 10, 1889.) 



776. The archaeology of the Potomac tide-water region. By Otis T. Mason, Pp. 



367-370, 1 fig., 5 pis. Mar. 7, 1890. 



