24 BULLETIN ol, SUPPLEMENT 1. U. S. NATIONAL MUSEUM. 



}\. 50. The Birds of North and Middle America — Continued. 



Family Sittid;T— The Nuthatches. 

 Family Certhii(l;e — The Creepers. 

 Family TroglodytidiB — The Wrens. 

 Family Cinclidfie — The Dippers. 

 Family Chamffidte— The Wren-Tits. 

 Family Sylviida' — The Warblers. 

 8 vo.. 1904, pp. i-x.x, 1-801, 19 pis. 



B. 51. A list of the pul)lications of the United States National Museum 

 (1875-1900), including- the Annual Reports, Proceedings, 

 Bulletins, Special Bulletins, and Circulars, with index to titles. 

 By Randolph I. (reare, Chief of Correspondence and Docu- 

 ments. 



8vo., 1902, pp. 1-vii, 1-168. 



B. 52. A list of North American Lepidoptera and ke}' to the literature 

 of this order of insects. By Harrison G. D\'ar, Ph. L)., Cus- 

 todian of Lepidoptera, U. S. National Museum, assisted by 

 C. H. Fernald, Ph. D., the late Rev. George D. Hulst, and 

 August Busck. 



8vo., 1902, pp. i-xix. 1-723. 



B. 53. A catalogue of the type and figured specimens of fossils, min- 

 erals, rocks, and ores in the Department of Geology, United 

 States National Museum, Prepared under the direction of 

 George P. jNIerrill, Head Curator of Geology. 

 * Part 1. — Fossil Invertebrates. 



8vo., 1905, pp. 1-704. 



B. 54. ^Monograph on the Isopods of North America. By Harriet 

 Richardson, Collaborator, Division of Marine Invertebrates. 



8vo., 1902, pp. i-liii, 1-727. 



B. 55. A contribution to the oceanography of the Pacific. By James 

 M. Flint, Medical Director, U. S. Navy (retired); Curator, 

 Division of ^Medicine, U. S. National Museum. 



8vo., 1902, pp. i-v, 1-62. 



