403 



from a puparium of Xanthograinma grandicorne Macquart, 

 from the plantation of the Oahu Sugar Company in April, 

 1904, bj r. W. Terry. Apparently it is not common here. 

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

 apparently all aphidivorous or coccidivorous species however, 

 and is widely distributed. It is a primary parasite of the 

 Syrphids and in consequence beneficial to the Aphidids and 

 inimical to man. 



Mr. Girault has synonymized this species with alhidius 

 Walker, but the recognition of Walker's species is extremely 

 doubtful from the descriptions alone. Mr. Girault's recent 

 synopsis of the jSTorth American species of Pacliynciiron is 

 marred by too much reliance being placed on colorational char- 

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

 tion of the species. 



Encyrtidae. 



Encyrtus infcllx (Embletou). This is the species which 

 was wrongly determined by Ashmead as Encyrtus fusciis 

 (Howard). Infelix is a widely distributed species parasitic on 

 Saissetia hemispJiaerica (Targioni). The writer has seen it 

 from Edinburg, Scotland ; South Kensington, England ; Torto, 

 Portugal; and San Francisco and Sacramento, California. 

 Masi has recently recorded it from the Sychelles Islands. 



BJepyrus mexicanus Howard. The writer is unable to dis- 

 tinguish the three species of BIrpyrus described by Howard, 

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

 Honolulu. Mexicanus was described from Monterey and was 

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

 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. 

 Texanus was described from Brownsville, Texas, and the re- 

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

 only host of Blepyrus here, described by Howard under the 

 name of mavsdeni. Coccoplwcionus dactylopii Ashmead is 



