117 



because the life cycle was here completed in 30 days, some 17 

 days less than is required in California. This rapidity of de- 

 velopment promises faster breeding and hence more effective 

 work against the scale. Some of the plants in the breeding 

 cage were transferred to Kapiolani Park and replaced by 

 others and henceforth this Division will be in position to supply 

 the parasites wherever they are wanted. 

 Hippodamia amhUjua, H. conrcrtjciis, and Coccinella californica. 



A strong colony of these ladybirds was received from Mr. 

 E. M. Ehrhorn of San Francisco on December 8, 1905. For the 

 present they are being bred in the laboratory for subsequent 

 distribution. 



SIPHANTA EGG PAEASITE (Aphn)umvnis pii.riUus, Perk.).^ 



Aware of the economy of Siphanta on these Islands, Messrs. 

 Koebele and Perkins while in Australia a year ago, were on 

 the sharp lookout for its enemies, since the insect came to us 

 from that country. On October 19, 1904, the "Miowera" 

 brought among other things a tube that contained a good many 

 egg batches of a species of Siphanta, from these gentlemen. A 

 note of this accession appears in the November, 1904, number 

 of the "Forester" (Vol. 1, p. 294). By the first of November, 

 1904, over a hundred specimens of the parasite were bred from 

 those eggs and distributed in two Siphanta-infested centers on 

 this Island. The parasites will be named and described ° by 

 ]\Ir. Perkins in a bulletin soon to be published by the Hawaiian 

 Sugar Planters' Association Experiment Station. It is a four- 

 winged fly of an orange yellow body and dark head, whose en- 

 tire life from egg to adult, is passed within the egg of Siphanta. 

 On the 5th of last month the writer in company of Mr. David 

 Haughs, the Forester's assistant, visited one of these colonies 

 and to his delight discovered there both the fly and the tell-tale 

 holes, evidence of its work. The good ally is thus happily es- 

 tablished upon these Islands, and if its presence achieves what 

 is hoped for, much good shall have been accomplished. The 

 work of its distribution is now in order ; some ten colonies have 



* Reprint from October, 190.5, "Forester and Agricnlturist.' ' 

 ° At the present writing tlie insect has been described and named 

 as above. 



