72 



THE MONTHLY BULLETIN. 



will be seen. too. that, as the adults of the first generation are wingless, 

 a rotation of crops would be effective, for if wheat is planted in a field 

 that was in some other crop the year before, there will be no source of 

 infection except the light infestation that may come from nearby fields 

 when the second generation of adults appears. 



THE SOFT BAMBOO SCALE. 



{Asterolecanium hamiusce Boisduval). 

 By E. O. EssiG, University of California, Berkeley, Cal. 



This coccid has been repeatedly taken at quarantine by state horti- 

 cultural officials for many years, but was not known to have become 

 established in California and the United States until March 1, 1914, 



Fig. 3L — The soft bamboo scale, Asterole- 

 canium bambusw Bdv. on bamboo stalks. 

 Enlarged twice. (Original.) 



when it was taken on growing bamboo in a private garden at Ventura 

 by S. H. Essig, horticultural inspector. It was again reported from 

 Sierra Madre by E. J. ]5ranigan^ in 1915. 



iMthly. Bui., Cal. Hort. Com., Vol. IV, p. 4S4, 191.5. 



