RKPORT OF THE ENTOMOLOGIST AXD BOTANIST 231 



SESSIONAL PAPER No. 16 



' Second. Connected with this species and working in a siniihHr manner, hut in 

 insigniiicant numbers, I have bred Recurvaria thujaella, Kearf. This species spina a 

 small whitish cocoon. 



' Thirdly. I have to-day bred one specimen of another species Argyrcsthia frey- 

 ella, Wlsni., which belongs to the golden metallic group and is a juniper feeder. 



'I have also bred the same little parasite with flagellate, five-branched antenna; 

 in the male, which l^ackard mentions. Dr. Ashmead has identified this as Pentacne- 

 miis bucculatricis, Howard. Besides this interesting little parasite, I have also bred 

 Deroslenes trifascialus, Ashm., a fine blue chalcid with coloured wings, determined by 

 Dr. Ashmead and a Hemiteles sp. as 5'et not determined.' 



These same parasites mentioned by Mr. Busck were also reared here at Ottawa in 

 very large numbers; but they did not seem to be sufficiently numerous to reduce to 

 any material extent the severity of the infestation; for the trees are still much dis- 

 figured by the injured twigs, \vhich have been conspicuous during the past autumn and 

 now (March 30) still contain the living larva', which will continue their work on the 

 return of warm weather. The larger number of parasites, however, gives every reason 

 to hope that this outbreak will soon come to an end. 



