III. CONTRIBUTIONS TO A KNOWLEDGE OF THE 

 ODONATA OF THE NEOTROPICAL REGION, 

 EXCLUSIVE OF MEXICO AND CEN- 

 TRAL AMERICA. 



By Philip P. Calvert, Ph.D., 



Assistant Professor of Zoology, University of Pennsylvania, Phila- 

 delphia, Pa. 



In the collections which various museums loaned to me for study as 

 material for the account of the Odonata lately published in the " Bio- 

 logia Centrali-Americana," many species were represented, which do 

 not form part of the Mexican-Central-American fauna, as far as we 

 know. The present paper deals especially with these species, but does 

 not pretend to give a complete list of Neotropical Odonata. Different 

 groups have been treated with different degrees of fulness for various 

 reasons, and the title of the paper, it is believed, exactly expresses its 

 scope. Some of the " Biologia " records also have been repeated in 

 order to add further information which lay outside the limitations of 

 that group. 



The largest part of the material here dealt with is the property of 

 the Carnegie Museum of Pittsburgh, to the Director of which, Dr. W. 

 J. Holland, I am indebted for the opportunity of studying it. Other 

 parts come from the U. S. National Museum, thanks to Dr. L. O. 

 Howard and the late Dr. W. H. Ashmead ; from the Museum of Com- 

 parative Zoology, Cambridge, Mass., thanks to Mr. Samuel Henshaw ; 

 and from the Academy of Natural Sciences of Philadelphia, where Dr. 

 Henry Skinner has given me the freest use of the Odonate collections. 

 The original sources of these various collections are given below. 



In the citation of previous literature the usual but not invariable 

 rule has been to give no references, if Mr. Kirby's Catalogue of 

 Odonata (1890) quotes all the important descriptions of a given spe- 

 cies. If some later work deals with a species more fully, or gives the 

 specific bibliography more completely, that work has been quoted. 



The Comstock-Needham terminology of the wing-veins has been 

 used, but, in order to facilitate comparisons with the older descrip- 



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