438 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 7 



Panicum dichotomillorum Michx., Jussicea suffruticosa L., Eleocharis 

 obtusa Schult. 



The following species were found to be not infested: Paspalum 

 dilatatum Poir, Commelina sp., Diodia virginiana L., and Eclipta alba 

 (L) Hassk, 



The following species were found to be infested in the field: Pas- 

 palum larranagce Arech., Paspalum plicatulum Michx., and Cyperus 

 flavicornus Michx. 



Method of Control 



Careful experiments have demonstrated that drainage is still the 

 safest remedy for the rice water-weevil. The proper time to com- 

 mence drainage of the fields is from two and one-half to three weeks 

 after the first flooding, while the larvae are still young. Drainage 

 should continue for a period of two weeks. A shorter period of drain- 

 age will not kill the larvae, and a longer period will injure the rice. 

 Farmers should not wait until the rice begins to turn yellow before 

 commencing to drain. The damage is practically all done by that 

 time, and the rice needs water to enable it to throw out new roots and 

 recover from the attack of the insect. 



AGRILUS POLITUS SAY INFESTING ROSES 



By Harry B. Weiss, Assistant to State Entomologist, New Brunswick, N. J. 



During August, 1913, while inspecting nurseries in northern New 

 Jersey in company with Mr. E. L. Dickerson of the New Jersey De- 

 partment of Plant Pathology, our attention was called to the death 

 of standard roses, the stems of which were swollen somewhat at 

 different points. A number of infested stems were collected, some 

 of which were sent to Dr. F. H. Chittenden. Under date of June 24, 

 1914, Dr. Chittenden wrote that adults had emerged and had been 

 identified by Mr. E. A. Schwarz as Agrilus politus Say, heretofore 

 recorded as being bred only from willow. Unfortunately only one 

 specimen emerged from my galls and Mr. C. A. Frost ^ was of the opinion 



1 Since writing the above, Mr. Frost informs me that Mr. Chas. Kerremans of 

 Belgium, to whom he sent my specimen, replied as follows: "I have examined your 

 Agrilus very carefully; it seems to be a variety of the European vlridis Linn, and it 

 resembles very much the var. fagi Ratz. but is smaller. The elytral sculpture and 

 the bronze copper coloration are the same; only the h«ad is a little more irregular, 

 the front being less smooth. It presents all the specific characters of viridis but 

 jagi is not on the whole as copper colored as viridis." 



Undoubtedly it will be necessary to obtain a larger series before the doubt in 

 this matter can be cleared up. 



