Vol. XI] COLE AND LOVETT—LIST OF OREGON D1PTERA 207 



36. Tipula carinata Doane 

 Corvallis, X-26 to XI-21. 



2>7. Tipula fallax Loew 

 Corvallis, IV- 18 to V-9. 



38. Tipula pubera Loew 

 Corvallis, V-12 (Gentner). C. P. A. det. 



39. Tipula retusa Doane 

 Forest Grove, VII-22 (Cole). C. P. A. det. 



40. Tipula apernax O. S. 

 Corvallis, V-5 and IV- 19 (Cole). C. P. A. det. 



41. Tipula streptocera Doane 

 Corvallis, VI-13. C. P. A. det. 



42. Tipula tristis Doane 

 Forest Grove, V-5 (Cole). 



43. Tipula unicincta Doane 

 Corvallis, V-25. C. P. A. det. 



44. Tipula usitata Doane 

 Corvallis, VI-2. 



Family PTYCHOPTERIDyE 



These crane-flies are distinguished from the Tipulidae by 

 having the V-shaped suture poorly defined and by lacking 

 the second anal vein. The larvae are quite remarkable in 

 Structure, having an extensile, elongated breathing tube on 

 the caudal end. The pupa has one of the thoracic horns 

 greatly elongated and breathes through this while the body 

 is covered with mud or water. 



45. Ptychoptera lenis O. S. 

 Hood River, VI-5 (Cole). C. P. A. det. 



