Number io8 February 25, 1922 



OCCASIONAL PAPERS OF THE MUSEUM OF 

 ZOOLOGY 



UNIVERSITY OF MICHIGAN 

 Ann Arbor, Michigan Published by the University 



NOTES ON CELITHEMIS WITH DESCRIPTIONS 

 OF TWO NEW SPECIES (ODONATA) 



By E. B. Williamson 



Mr. Jesse H. Williamson collected dragonflies in Florida 

 from March i to April 26, 192 1. Localities visited and dates 

 are as follows : Sebring, March i ; Fort Myers, March 3-7 and 

 10-19; Taxambas, Marco Island, March 8; Labelle, March 

 21-27; Moore Haven, March 29 and 30 and April 2; Palm- 

 dale, March 31 and April 3-8; enroute Moore Haven to West 

 Palm Beach, across Lake Okeechobee, April 9; Miami, April 

 12; Enterprise, April 15-26. From April 29 to May 9 he col- 

 lected at Kathwood, Aiken Covinty, South Carohna, but at 

 this time most of the species observed were just emerging. 

 Among the 4,547 dragonflies collected on the trip are several 

 new and many interesting things. 



At Enterprise he found four species of Celithemis, one of 

 which was closely related to another species, taken earlier on 

 the trip as well as at Enterprise, but which he recognized in 

 the field as specifically distinct. In order to place this species 



