Sept., I914-] Alexander: Tanypremna and Megistocera. 205 



Hapithus quadratus Scudd. 



Miami, Sept. 22, 24. 25, 6 males, 7 females; Key West, Sept. 18, 

 I female. 



Hapithus brevipennis Sauss. 



La Grange, Sept. 11, 2 females; Cocoanut Grove, Sept. 14, i male, 

 I female. 



Orocharis saulcyi Guer. 



Miami, Sept. 22, i male. 



Tafalisca lurida \\'alk. 



La Grange, Sept. 10, 11, 2 males; Big Pine Key, Sept. 19, 20, 2 

 females (Ds.), Oct., i male (Sands). 



A REVISION OF THE AMERICAN SPECIES OF 

 TANYPREMNA OSTEN SACKEN AND MEGIS- 

 TOCERA WIEDEMANN. (TIPULID^, 

 DIPTERA.)! 



By Charles P. Alexander, 



Ithaca, N. Y. 



This paper is presented in order to complete the American species 

 of the Dolichopezini that are allied to Megistocera Wiedemann. 

 These genera are Brachyprcmita Osten Sacken which has been taken 

 up by the author in an earlier paper (Journ. N. Y. Ent. Soc, vol. 

 XX, p. 225-236, 1912), Tanypremna Osten Sacken and Megistocera 

 Wiedemann which will be considered in the present paper in the 

 order named. A key to the Dolichopezine genera of the world is 

 given in Psyche, vol. XIX, p. 64, 1912. 



I am indebted to Mr. Frederick Knab for the loan of the material 

 in the United States N^ational Museum; to Mr. E. T. Cresson, Jr., for 

 the specimens in the Philadelphia Academy of Sciences ; to Mr. C. W. 

 Johnson for a Tanypremna taken on the Mann expedition to Brazil; 

 to Dr. F. H. Lutz for the material in the American Museum of 

 Natural History ; and to Mr. John Thomas Lloyd for the species of 

 Tanypremna herein described as new. 



1 Contribution from the Entomological Laboratory of Cornell L'niversity. 



