April, '19] HOLLOW AY: PARASITES OF SUGAR CANE BORER 175 



A Fresh Infestation 



At about the time this was written, a new infestation by the pink 

 bollworm was discovered in Texas. This is in the extreme western 

 part of the state along the Rio Grande, where the insect has been 

 found in widely scattered fields along a front of 150 miles. Every- 

 thing indicates at this time that the infestation is due to the smuggling 

 of seed across the river from Mexico. The region is isolated from any 

 other territory in the United States in which cotton is planted by 

 hundreds of miles of mountains and deserts. To control the situation 

 there as it now appears is a matter of the utmost simpHcity compared 

 to the gratifying and possibly absolute control which has been 

 obtained in other parts of the state. The finding of the new infesta- 

 tion at present, therefore, does not seem in the slightest degree to 

 detract from the present generally hopeful outlook. 



Investigations in Mexico 



This paper would not be complete without at least a reference to 

 the work of the Department of Agriculture in Mexico. This is con- 

 ducted under the direction of Mr. August Busck. It includes studies 

 of the bionomics of the species to serve as a basis for control measures 

 which may be put into operation in case, by any chance, the pest ever 

 becomes established in the United States. It also includes an effort 

 towards the total ehmination of the pink bollworm in Mexico. This 

 project is by no means as visionary as might be supposed, and definite 

 progress has already been made. This subject, however, must be 

 dealt with more fully in a paper prepared by Mr. Busck, which in the 

 nature of the case cannot be written until there has been time for 

 further developments in Mexico. 



PARASITE INTRODUCTION AS A MEANS OF SAVING SUGAR 



By T. E. HoLLOWAY, Entomological Assistant, Bureau of Entomology, Department of 



Agriculture 



This paper is a report of progress on work in parasite introduction, 

 but it may also serve to point out the benefits which may come from 

 the active interest of the agricultural public in any bit of scientific 

 endeavor which appeals to it. 



The control of the sugar cane moth borer, Dintrcca saccharalis, has 

 been a subject of investigation in Louisiana for many years. As time 

 passed and experimental results accumulated, it became more and 

 more apparent that only by the introduction of foreign parasites could 



