26 Trans. Acad. Sci. of St. Louis. 



winter to Now York, the Great Lakes, Great Salt Lake and Cali- 

 fornia; casual to Montana, Colorado, Nebraska (September); 

 Iowa, October 15, 1891, and October 12, 1894; Kansas, Bahama 

 and coast of Peru. 



It finds a place in our list on the strength of three specimens 

 taken by Mr. Chas. K. Worthen of Warsaw, III, in September 

 1900, on the Mississippi River, bounding Clark Co., Mo., in the 

 northeast corner of the state. 



Subfamily Sterninae. Terns. 

 61. Sterna caspia Pallas. Caspian Tern. 



Sterna tschegrava. 



Geog. Dist.— Nearly cosmopolitan. In North America breed- 

 ing locally from Newfoundland to Virginia, and in colonies on 

 small islands in Lake Michigan, in Texas, Louisiana and Nevada. 

 In migration widely scattered, having been taken in Wyoming, 

 Nebraska, Minnesota, Iowa, Ohio, etc. 



Mr. Chas. K. Worthen of Warsaw, 111., writes me that he took 

 Caspian Torns a number of times during the latter part of May 

 and fore part of June, usually while flying over a big sandbar in 

 the Mississippi River not far from the Missouri shore. Mr. W. 

 E. Praegcr saw Caspian Terns frequently at Keokuk in the fall 

 of 1887 and '88 from September 9 to October 15. Mr. John D. 

 Kastendiek has a fine specimen in his collection of mounted birds. 

 It was shot on the mill pond at Billings, Christian Co., about 

 April or May, 1895. 



69. Sterna forsteri Nuttall. Forster's Tern. 



Sterna havelli. Havell's Tern. 



Geog. Dist. — North America generally. Breeds locally in the 

 United States from the Atlantic to the Pacific, but chiefly in the 

 interior north to latitude 57°. In winter southward to Brazil. 



In Mi.ssouri, ))Oth east and west, formerly a fairly common, 

 now rather rare, transient visitant in April and May, and again in 

 September and October. 



70. Sterna hirundo Linn. Common Tern. 



Sterna wihonii. Sterna fluviatilis. Common Sea Swallow. Wilson's Tern. 



Geog. Dist. — Northern hemisphere. In America chiefly along 

 the Atlantic coast north to the Arctic coast and west on large 



