321 

 NATURE AND EXTENT OF USEFULNESS OF THE PARASITE. 



It is now beyond doubt that the parasite does and will attack 

 the horn fly larva and pupa in its way, though it w^ll probably 

 show preference to the larger hosts breeding in the same medium. 

 But even in the latter event it cannot but prove useful, both di- 

 rectly and indirectly. Directly by reducing the numbers of the 

 larger flies that inhabit cattle droppings. Indirectly by reducing 

 the numbers of the larger maggots and pupae as a source of 

 food to the mynah bird and other predators and thus compelling 

 them to feed on the smaller fry, including horn fly larvae and 

 pupae. No opportunity was yet open to ascertain whether the 

 parasite has been established on the Islands, but judging from 

 the facility with which large numbers w^ere bred in confinement 

 the certainty of its ultimate establishment on the Islands is a safe 

 assumption. Once established much of the success of its intro- 

 duction will depend upon the intelligent manipulation of the vari- 

 ous ranch managers and owners in distributing parasitized pupae 

 over their respective lands. 



A CORRECTION. 



Advantage is here taken of calling attention to a serious typo- 

 graphical error that appeared in the last (1905) "Proceedings of 

 the Hawaiian Live Stock Breeders' Association," on page yy. 

 For the first line beneath the illustration on that page read "This 

 lantana enemy (Fig. 8) was not introduced by Mr. Koebele." 

 Other errors of similar nature abound in the authors notes ni 

 that publication, but since these notes are to reappear in identical 

 form in the forthcoming report of the Board, with errors cor- 

 rected, they will not be referred to here. 



RICE HARVESTING MACHINERY. 



We are in receipt of some excellent illustrations together with 

 a description of the recent experiments which Mr. F. G. Krauss 

 of the Hawaii Experiment Station has been lately conducting 

 with rice harvesting machinery. The whole will be published in 

 the November issue. 



