BULLETIN 51, UNITED STATES NATIONAL MUSEUM. 
. List of fishes collected in Iowa and Missouri in August, 1884, 
with descriptions of three new species. By David S. Jordan 
and Seth E. Meek. 
pp. 1-17. 
. On Bstrelata jisheri and @. defilippiana. By Robert Ridg- 
way. 
pp. 17-18. 
. Icterus cucullatus Swainson, and its geographical variations. 
By Robert Ridgway. 
pp. 18-19. 
. Passer saturatus, a new species of tree-sparrow from the Liu- 
Kiu Islands, Japan. By Leonhard Stejneger. 
pp. 19-20. 
. Description of -a new species of Contopus from tropical 
America. By Robert Ridgway. 
p. 21. 
. Note on the Anser leucopareius of Brandt. By Robert Ridg- 
Way. 
pp. 21-22. 
. Description of a new warbler from Yucatan. By Robert 
Ridgway. 
p. 23. 
. Description of two new birds from Costa Rica. By Robert 
Ridgway. 
pp. 23-24. 
. Description of three supposed new honey creepers from the 
Lesser Antilles, with a synopsis of the species of the genus 
Certhiola. By Robert Ridgway. 
pp. 25-30. 
. On hornblende andesites from the new volcano on Bogosloft 
Island in Bering Sea. By George P. Merrill. 
pp. 31-38. 
. On Cathartes burrovianus Cassin, and C. wrubitinga Pelzeln. 
By Robert Ridgway. 
pp. 34-36. 
. On Onychotes gruberit. By Robert Ridgway. 
pp. 36-38. 
. Notes and descriptions taken from selachians in the U. S. 
National Museum. By 8S. Garman. 
pp. 39-44. 
. A review of the American species of flying fishes (Hvocawtus). 
By David S. Jordan and Seth E. Meek. 
pp. 44-67. 
. Notes on skeletons of Etheostomatine. By David S. Jordan 
and Carl H. Eigenmann. 
pp. 68-72, 
