August, '19] FERRIS: MEALY-BUGS 299 



1918. Cryptoripersia salinus (Ehrh.); Ferris, Calif. Species Mealy-Bugs, Stanford 



Univ. Publ., p. 74, pi. 3, f. 30. 



1919. Cryptoripersia arizonensis (Ehrh.); Ferris, Contrib. Knowl. Coccidae Sw. U. S., 



Stanford Univ. Publ., p. 34. 



Professor Cockerel) has kindly sent me a slide of his Ripersia trichura 

 from the type material. This is structurally identical with C. arizon- 

 ensis (Ehrh.). The fact that the specimens are smaller than arizon- 

 ensis and were not enclosed in a sac may be taken merely as evidence 

 that they were not fully grown. 



The paper on mealy-bugs was received with much interest and a 

 general discussion was entered into, led by H. S. Smith, E. M. Ehrhorn, 

 A. A. Brock, R. S. Woglum. 



Chairman H. J. Quayle: The next topic on the program is an 

 illustrated lecture by Mr. D. B. Mackie, southern field deputy of the 

 State Commission of Horticulture on ''Migratory Locusts in the 

 Philippine Islands." Mr. Mackie has had a large experience in 

 entomological work in the Philippines and his talk will be very inter- 

 esting I am sure. 



(No paper was presented for publication.) 



Chairman H. J. Quayle: This will end the program for this 

 morning. The proceedings will be continued at the same place this 

 afternoon beginning at 2 o'clock p. m. (Recess.) 



Afternoon Meeting 



The meeting was called to order by Chairman H. J. Quayle at 

 2 p. m, E. O. Essig acted as Secretary. 



Chairman H. J. Quayle: The first paper this afternnon will be 

 presented by Mr. Geo. M. List, whose subject is "The Alfalfa Weevil 

 in Colorado." 



(Paper withdrawn for publication elsewhere.) 



Chairman H. J. Quayle: Prof. Ceorge P. Gray of the Insecticide 

 Laboratory of the University of California has recently conducted 

 some very interesting investigations relative to liquid hydrocyanic 

 acid gas. He will present the next paper entitled "The Physical 

 and Chemical Properties of Liquid Hydrocyanic Acid." 



(Paper withdrawn for publication elsewhere.) 



Chairman PI. J. Quayle: Inasnuich as there are several other 

 papers yet to follow on this subject of li([uid hydrocyanic acid gas, 

 I am going to suggest that we defer discussion until after all of the 

 speakers have finished. 



The next paper by Mr. P. S. Woglum of the Bureau of Entomology 



