BREEDING RECORDS OF L906 



19 



worthy of some attention. It is undoubtedly true thai each of 

 these floral regions is also a distincl subfaunal region. It may there- 

 fore be expected that different weevils will exist in the different 

 belts and different parasites operate upon these weevils. Some 

 of these parasites may be able more readily than others to adopt 

 the boll weevil as a host, or in certain regions there may be more 

 species of parasites capable of doing tins. In the discussion of the 

 geographical distribution of the parasites more light will be thrown 

 upon this question. 



G | Map of Texas, divided into geographical regions and illustrating average percentage of para- 

 sitism of the boll weevil in all cotton forms: I, alluvial prairie; II, coast prairie; III, Edwards 

 Plateau; IV, black prairie; IV»>, brown loam prairie; V, cross timbers; VI, oak, hickory, and pine; 

 VII, pines. ( Original.) 



BOLL AVEEVIL STATUS. 



That there should be some definite relation between the percent- 

 age of infestation and the percentage of parasitism was expected, 

 on the ground that a condition favorable to the weevil should be 

 favorable to the parasites. It was, of course, conceded that climate 

 would be another agency to figure in the question. The year's 

 work is deficient in that coordinate examinations of infestations and 

 parasitism were not taken. In another year this will be necessary 

 in order to show whether the parasites are reducing the infestation. 



At present no relation can be Pound between parasitism and infesta- 

 tion or climatology. Beeville, Goliad, and Victoria have a mean 



