64 MISCELLANEOUS STUDIES 



may do. These are the only records of it in California. The author 

 has compared it with specimens taken by R. W. Doane in 1915 on 

 grain in Utah. 



68. Macrosiphum granarium (Kirby) 

 Figures 135, 148 



Kirby, Linn. Soc. Trans., vol. 4, p. 238, Aphis (orig. desc.). 

 Davidson, Jour. Econ. Ent., vol. 5, p. 411, 1912 (list). 

 Theobald, Jour. Econ. Biol., vol. 8, p. 58, 1913 (desc.). 

 Davidson, Mon. Bull., Cal. Comm. Hort., vol. 6, p. 65, 1917 (note). 



Records. Graminaceae (various species) ; San Jose (Davidson) ; Stanford 

 University, January to May, 1915 ; Berkeley, March, 1915 : Typha latifolia 

 (Davidson). 



This is a more or less common species of Macrosiphum on various 

 grains and grasses in the San Francisco Bay region during the winter 

 and spring. In late spring and early summer, as the grasses begin 

 to dry out, it leaves them for the cat-tail rush or California tule 

 (Davidson, 1917). In the late fall or early winter it returns to the 

 grains and grasses, where it passes the winter in the viviparous forms. 



69. Macrosiphum heucherae (Thomas) 



Thomas, 8th Ann. Kep. Illinois St. Ent., p. 66, 1879. Siphonophora (orig. 



desc. ) . 

 Davidson, Jour. Econ. Ent., vol. 8, p. 427, 1915 (desc.). 



Record. Heuchera ihartwegi, Kedwood Canyon, Contra Costa County (David- 

 son). 



In the latter part of May, 1914, Davidson found all the forms, 

 including the apterous and alate viviparous females, the apterous 

 oviparous females, the alate males, and eggs on the flower stalks of 

 alum root in Contra Costa County. Since his description no record 

 has been made concerning the species. The author is unacquainted 

 with it, having never seen specimens. 



70. Macrosiphum jasmini (Clarke) 



Clarke, Can. Ent., vol. 35, p. 252, 1903. Ncctarophora (orig. desc.). 

 Record. Jessamine, Berkeley (Clarke). 



Since Clarke's description of the apterous viviparous females of 

 this species it has never been found. Its identity is, therefore, un- 

 known to the author. 



