124 BULLETIN 51, UNITED STATES NATIONAL MUSEUM. 



B. 49. The published writing-.s of Philip Lutley Sclater, 1844-1896. 

 Prepared under the direction of G. Brown Goode. 



Svo., 1896, pp. xix, 1-135, frontispiece. 



B. 50. The bird.s of North and Middle America: A descriptive cata- 

 logue of the higher groups, genera, species, and subspecies 

 of birds known to occur in North America, from the Arctic 

 lands to the Isthmus of Panama, the West Indies and other 

 islands of the Caribbean Sea, and the Galapagos Archipelago. 

 B}^ Robert Ridgvva} , curator, division of birds. Part 1. 

 Family Fringillidie — The Finches. 



8vo., 1901, pp. i-xxx, 1-715, 20 pis. (Additional parts in preparation.) 



