186 Bulletin American Museum of Natural History. [Vol. XXXVI. 



English Names. — Vernacular names do not exist for most of the species 

 treated; in a work of this character it did not seem desirable to use what 

 may be called 'machine-made' ones, and I have felt that the common names 

 given with the family-headings will supply all the information in regard to 

 the general relationships of the species treated that is likely to be required. 



Color Terms. — Ridgway's 'Color Standards and Color Nomenclature' 

 (Published by the Author, Washington, D. C, 1912) has been adopted in 

 this work. 



