362 DIPTEROUS GENUS TIPULA 



Holotype: cf; Aweme, Manitoba, Canada. July 20, 1912. 

 (N. Griddle.) 



Allotype: 9 ; Aweme, Manitoba, Canada. June 19, 1912. 

 (N. Criddle.) 



Paratypes: two females; same locality, etc. June 1 and 20. 



It gives me pleasure to name this species in honor of Mr. 

 Norman Criddle, to whom I am under many obligations for mate- 

 rial received. The only species of the group with which this species 

 might be confounded, is Tipula coloradensis Doane. It agrees 

 with the latter species in the two pointed upper process of the 

 lateral appendage — evidently considered by that author as two 

 distinct processes — but the lateral appendage of coloradensis is 

 devoid of a third, or pendulous process, and it also lacks the very 

 distinct dorsal stripe of the abdomen found in criddlei. The 

 female is distinguished by its very short ovipositor — long and 

 slender in coloradensis. In the more or less bicolored segments of 

 the flagelltim of the female, it might be confounded with females 

 of hebes and ottawaensis, the antennae, however, are much more 

 robust and the dorsal stripe of the abdomen very pronounced. 



