408 



from a puparimu of Xanl/uMjraiiniia r/jrin^fi conic Mae([iiart, 

 from the plantation of the Oahu Suii'ar Company in A])ril, 

 lOO-t, h_v F. W. Terrv. A])parently it is not connnon here. 

 In the United States it has a wide range of Syrphid hosts, 

 apparently all aphidivorons or eoocidivorons species however, 

 and is -widely distribnted. It is a primary parasite of the 

 Syrphids and in conseqnenee beneficial to the Aphidids and 

 inimical to man. 



Mr. Giranlt has synonymized this species with (dhiitins 

 Walker, l)iit the recognition of Walker's species is extremely 

 donbtfnl from the descriptions alone. Mr. Giranlt's recent 

 synopsis of the ]Srorth American species of P achy neuron is 

 marred by too mnch reliance being placed on colorational char- 

 acters, and does not prove to be very helpfnl in the identifica- 

 tion of the species. 



Encyrtidae. 



Encj/rhis infelix (Enddeton). This is the species which 

 was wrongly determined by Ashmead as Encyiiiis fusciis 

 (Ploward). InfcIix is a widely distribnted species parasitic on 

 Saissetia liemisphaerica (Targioni). The Avriter has seen it 

 from Edinbnrg, Scotland ; Sonth Kensington, England ; Torto, 

 Portngal ; and San Francisco and Sacramento, California. 

 Masi has recently recorded it from the Sychelles Islands. 



BJepyt'us mexicanus Howard. The writer is nnable to dis- 

 tingnish the three species of Blepj/rus described l)y Howard, 

 after a carefnl comparison of the types with a large series from 

 Honohiln. Mexicanus was described from Monterey and was 

 reared from a host said to be Ceroputo yuccae (Coqnillett). 

 The host remains mounted with the types, however, show the 

 long, glassy filiaments so characteristic of Pseudococcus vir- 

 gatus (Cockerell) and an error of identification is evident. 

 Texan us was described from Brownsville, Texas, and the re- 

 corded host is P. virgatus which is definitely known to be the 

 only host of Blepyvus here, described by Howard imder the 

 name of marsdeni. Coccophoctonus. dactylopii Ashmead is 



