251 



The parasitic species mentioned in this paper were determined for me 

 by Mr. W. H. Ashmead, and by comparison with types in the National 

 Collection. Types of the new species are also in the ITational Collection. 



REPORT ON THE AUSTRALIAN INSECTS SENT BY ALBERT KOEBELE 

 TO ELLWOOD COOPER AND B. M. LELONG. 



By D. W. COQUILLETT. . 



Los Angeles, Cal., November 1, 1892. 

 Sir : lu accordance with your letter of October 11, 1892, instructing me to examine 

 and report upon the condition of the colonies of beneficial insects sent from Aus- 

 tralia by Mr. Albert Koobele to various persons in California other than myself, I 

 submit herewith the following brief report. 

 Respectfully, 



D. W. COQUILLETT, 



Special Agent. 

 Prof. C. V. Riley, 



Entomologist. 



On the 21st of October I interviewed Mr. Koebele at his home in 

 Alameda, and learned from him that besides sending insects to me 

 he had also sent some to Mr. Ellwood Cooper and to Mr. B. M. Lelong. 

 Those sent to the former had been liberated in the olive grove formerly 

 owned by Mr. Cooper, near Santa Barbara, while of those sent to Mr. 

 Lelong, colonies had been sent to each of the following localities: Ala- 

 meda, Hay wards, Santa Clara, San Gabriel (two). Orange (two), and 

 Tustin (two), making nine colonies in all. 



Mr. Koebele informed me that the- colony sent to Alameda by Mr. 

 Lelong was placed in Mr. Koebele's yard upon a pear tree thickly in- 

 fested with Aspidiotiis perniciosus. This colony was placed upon the 

 tree about the middle of May, and consisted of about forty adult spec- 

 imens of Orcus chalybeus, five Orcus australasixe, and two specimens of 

 an undetermined sj)ecies of Rhizobius. In company with Mr. Koebele 

 and two other entomologists, Messrs. Baron and Harford, I examined 

 the tree upon which this colony had been placed, and also the adjoin- 

 ing trees, but none of us found any trace of the Orcus chalyheus., and 

 Mr. Koebele informed me that he had never succeeded in finding it 

 upon these or any of the other trees in that vicinity, although he had 

 repeatedly searched for it, since his return from Australia in August. 

 Of Orcus australasiw we found two adults, two pupte, and seven larvte, 

 and of the Rhizobius we found two adults and six larvte. One of the 

 Rhizobius adults was found upon a tree adjacent to the one upon which 

 the colony had been placed, but all of the Orcus australasiw were upon 

 the original tree. 



In thje afternoon of the above-mentioned day I proceeded to Hay- 

 wards, in Alameda County, and interviewed Dr. E. Kimball. From 



