568 



U. 8 P R. E. EXP. AND SURVEYS— -ZOOLOGY — SEKEEAL REPORT. 



Detailed measurements of species. 



List of specimens. 



COEVUS AMERICANUS, var. FLORID ANUS, Baird. 



Flotida Crow. 



Sp. Ch — ^About the size of C. americanus, but bill and feet larger. Tail less rounded. Third, fourth, and fifth quills nearly 



third rather longer than fifth. Color less violet above. Length, 19.50 ; wing, 12 ; tail, 7.70 ; tarsus, 2.60. 

 Hab. — Southern peninsula of Florida. » 



The reception of this bird, as the article on Corvus is going through the press, prevents any 

 very elaborate criticism of its characters, but there are so many peculiarities in it as clearly to 

 show that it is, if not a distinct species from the common crow, at least a very remarkable 

 variety. Although perhaps rather smaller than the O. americanus, the bill and feet, especially 

 the latter, are very considerably larger. The nasal feathers extend over the basal two-fifths of 

 the bill instead of the half. The proportions of the bill are about the same ; in the Florida bird 

 it is rather the longer. The greatest difference is in the feet. The tarsal joint of the tibia is 

 bare, the feathers scarcely coming below it, even anteriorly, 'instead of projecting some distance. 

 The tarsus is almost a quarter of an inch longer ; covered anteriorly by nine scutellae instead of 



