THE CANADIAN ENTOMOLOGIST 199 



same; 18, cauda of same; 19, cornicle of same; 20, lateral view of 

 8th and 9th segments of same; 21, oviparous female; 22, antenna; 

 23, hind tibia and, 24, egg of No. 21. The enlargement is indi- 

 cated Avith each figure. Original, Miriam A. Palmer. Illustrator. 



NEW NEARCTIC CRANE-FLIES (TIPULID.E:, DIPTERA) 



PART III. 



BY CHARLES P. ALEXANDER, CORNELL UNIVERSITY, ITHACA, N. Y. 



This paper is a continuation of the preceding articles under 

 the same title (Can. Ent., vol. 48, p. 42-53, 1916; vol. 49, p. 22-31, 

 1917). The species here considered include a small number of 

 subapterous forms, these belonging to the genera Chionea, Lim- 

 nophila, and Tricyphona. 



I am indebted to Mr. W. L. McAtee, Mr. R. C. Shannon, 

 Mr. C. W .Johnson and other gentlemen mentioned in the paper. 

 I am especially indebted to Mr. L. O. Jackson for specimens herein 

 described. Unless stated otherwise, the types are in the collec- 

 tion of the author. 



Subfamily LimnohiincE. 



Tribe Limnobiini. 



Genus Limnohia Meigen. 



Limnobia indigena jacksoni, subsp. n. 



Male. — Length 7.4 mm.; wing 8.8 mm. 



Female. — Length 7.1 mm.; wing 7.6-8 mm. 



Similar to typical indigena O. S. (Northeastern America), 

 differing as follows: 



The medial praescutal stripes are continuous and well-defined 

 behind, the interspaces obscure, not bright yellow; pleura largely 

 dark brown, this including also the outer faces of the coxae. Wings 

 similar, the ground-colour more grayish, the brown clouds less 

 distinct and more extensive, pale grayish brown; these markings 

 include a broad, continuous seam along and slightly before the 

 cord and the apex of the wing; basal deflection of vein Cm close 

 to the fork of M. Abdominal tergites with the cross-bands poorly 

 defined, the sternites suffused with brownish. 



June, 1917. 



