387 



Hawaiian Sugar Planters' Association show that it was 

 bred from material sent in 1908, 1009, and 1911. 



Mr. Swezej (Planters' Record 2:360-366, 1910) records 

 breeding it from some lots of material received October l"), 

 1909. Some parasites had already emerged and died, twelve 

 were still living and twenty more emerged during the fol- 

 lowing week and a new generation was secured, and by No- 

 vember, eight adults of a new generation were secured from 

 dipterous puparia in cow dung, the parasite ovipositing in the 

 T)uparia. Subsequent sendings received from Oct. 28 to Jan- 

 7, 1910, produced about 475 parasites and from these and 

 the parasites secured by breeding, colonies of 20 females and 

 20 males were liberated in Manoa Valley (Nov. 1909) ; 21 

 females and 39 males in Nuuanu Valley (Xov. 1909) ; 26 

 females and 34 males at Waialae Dairy; 26 females and 34 

 males (Nov. 1909) and about 12 females and 30 males 

 (May. 1910) also on Oahu, the exact locality not designated, 

 tmd on Maui, at the Grove Ranch, 11 females and 17 males 

 (Jan. 1910) ; and a colony of 16 females and 34 males were 

 sent to the Parker Ranch on Hawaii for liberation (Dec. 

 1909). Mr. Swezey also records {Op. CiL 7:258, 1912) re- 

 ■ceiving a shipment from Switzerland on Nov. 29, 1911, from 

 which 14 females and 30 males emerged dui-ing the next 

 two months o-f which some were liberated. 



He found that with the advent of the winter season with 

 its slight reduction of temperature most of the parasites went 

 into a hibernating condition on reaching full larval growth, 

 some keeping dormant in this way from Deeend)er until ^Fay. 



It is interesting to note that there is a single male of 

 this species in the collection referred to, bred out January 4, 

 1912, from a puparium brought down from Manoa Valley 

 bv ]\lr. Muir. I cannot find that the species has been seen 

 since. It does not seem that the species could in any ease 

 prove very important in the control of the hornfly, since it 

 attacks the puparium and this in the horn fly is tiglitly en- 

 -closed in the hardened dung so that the parasite would have 



