206 CALIFORNIA ACADEMY OF SCIENCES [Pioc. 4th Se». 



dead heartwood of prune trees allows the winter rains to 

 soak in and Prof. Lovett has found the species to be of some 

 economic importance for this reason. 



26. Nephrotoma calif ornica (Doane) 



Corvallis, VI-2. 1908, Ent. News, XIX, p. 176. 



27. Nephrotoma erythrophrys (Will.) 



Joseph. C. P. A. det. 



28. Nephrotoma ferruginea (Fabr.) 



Hood River, VI-3 to 15 (Cole). The larvae were col- 

 lected around the bases of strawberry plants in large numbers 

 in early May, at which date some had commenced to pupate. 

 The damage to the plants could not be easily estimated as 

 the strawberry-root weevil was at work in the same places. 

 C. P. A. det. 



29. Nephrotoma macrophallus (Dietz) 



Forest Grove, VII-8 (Cole). C. P. A. det. 1918, Trans. 

 Amer. Ent. Soc., XLIV, p. 114. 



30. Holorusia rubiginosa Loew 



Corvallis, VI-10; Oswego; Cascadia, VIII; Hood River, 

 VI (Cole). 



31. Tipula aequalis Doane 



Forest Grove, VII-22 (Cole). 



32. Tipula albofascia Doane 



Corvallis, V-22-1898. 



33. Tipula angustipennis Loew 



Corvallis; Forest Grove, IV-20 to V-10 (Cole). C. P. 

 A. det. 



34. Tipula armata Doane 



Corvallis; Forest Grove, V-I7 (Cole). C. P. A. det. 



35. Tipula californica Doane 

 Corvallis IX-25; Forest Grove V-20 (Cole). C. P. A. 

 det. 1912, Annals Ent. Soc. Amer., V, p. 49. 



