131 



If he is uot, it is to his interest to make their acquaintance. 

 Collect pupae and place in a glass jar covered with a bit of 

 cloth held fast by string or rubber band. At the end of a 

 week or two flies will begin to issue, and if these are small, 

 black, four-winged, he may rest assured that he has the para- 

 site. The Entomological Division of the Board of Agricul- 

 ture and Forestry is at any time ready to breed, determine, ana 

 report upon any material submitted for examination. 



About February, 1905, a collection of dung fly larvae and 

 pupae were received from Mr. Albert Koebele, who collected 

 them near Sydney, New South Wales, and about March para- 

 sites began to issue from them. Two strong colonies of these 

 were released; one near Honolulu and the other on Leilehua. 

 Subsequent examination of horn fly material collected at both 

 places failed to show the presence of the parasite. The same 

 is true of a number of dung beetles or tumble bugs sent by Mr. 

 Albert Koebele. None have been seen since the day of their 

 release. 



SCALE INSECT PARASITES. 



The parasites affecting the numerous scale insects upon these 

 Islands were bred extensively. In course of the coming year 

 the writer hopes to be in a position to prepare and publish a 

 monograph of the Coccidae on these Islands, together with a 

 list and description of the parasites affecting them, which Mr. 

 R. C. L. Perkins, of the Hawaiian Sugar Planters' Association 

 Experiment Station, promises to prepare. 



IV. OFFICE AND LABORATORY V/ORK. 



IDENTIFICATION OF INSECTS. 



This is an essential part of the office work. It is work that 

 consumes a great deal of time, although there is little to show 

 for it. While some insects are recognized at flrst sight the 

 identification of others frequently takes hours and days of 

 search through literature and comparison with descriptions 

 and specimens. This is unavoidable, however, for the identity 

 of an insect is the inevitable guide in the information to be 

 given the applicant. We must also take stock, as it were, of 



