WHOLE VOL. APPLIED ENTOMOLOGY HOWARD 4O7 



Spanish and English. This excellent journal is still being published, 

 and through its volumes are scattered very numerous important 

 articles on injurious insects. In the last number received in Washing- 

 ton the organization of the Bureau of Agriculture is displayed on the 

 inner cover, and no strictly entomological officer is mentioned. Mr. 

 Gonzalo Merino is still Chief of the Plant Pests Control Division. 

 In this number is an important article entitled " Some Notes on the 

 White Pyralid Moth Borer {Scirpophaga innotata Walker) and 

 Suggestions for its Control," by Pedro L. Sison. Earlier volumes 

 contain articles by Leopoldo Uichanco, H. E. Woodsworth, and 

 others. In the volume for 1923 is the first article by Faustino Q. 

 Otanes. Mr. Otanes was in the United States in 1922 studying in 

 preparation for an official position in the Philippines. He visited 

 Washington and spent some time studying the organization and 

 methods of work in the Federal Bureau of Entomology. Articles by 

 Mr. Otanes occur in the Agricultural Review for 1924, 1925, 1926, 

 and 1927. In the number for the first quarter of 1927 he is given 

 the title, Acting Chief, Plant Pests Control Division ; in that for 1926 

 he is the author of an article, and to his name is attached the title 

 Entomologist. 



Aside from official work in economic entomology, the Victorias 

 Milling Company on the Island of Negros and the North Negros 

 Sugar Company, in the autumn of 1927 engaged Dr. W. D wight 

 Pierce (for many years connected with the United States Bureau 

 of Entomology) for two years to go out to Negros and study the 

 insects affecting the sugar cane. Doctor Pierce went to the island 

 in August, 1927, and remained until March i, 1930, when he 

 returned to the United States with large collections and is now 

 engaged in taxonomic work on these insects. In Negros he was 

 given an excellent salary, a first-class laboratory outfit, and four 

 collectors and assistants. 



He found a very large number of primary sugar cane pests, which 

 complicated the situation very materially. There were ten species of 

 borers causing dead-heart, and in order to obtain control of these it 

 was necessary to have several series of parasites. Up to February, 

 1928, he was practically unable to find any parasites. In this month 

 the egg parasitism of the principal borer {Olethr elites schistaceana) 

 amounted to less than six per cent as an average over the territory 

 involved. By adopting a system of redistribution of parasites in small 

 units to many foci, he quickly brought the average parasitism in three 

 months to over 80 per cent. There was a drop in parasitism which 

 accompanied the great reduction in the host numbers, but from 



