g4 PROCEEDINGS OF THE NATIONAL MUSEUM vol.08 



1910, and reared an adult the next summer. Koebele collected galls 

 in the Santa Cruz Mountains and others in Sonoma County. 



CYNIPS MIRABILIS Kinsey 



The writer collected galls of this species at Victoria, British 

 Columbia ; on San Juan Island, at Tillicum and Shelton, Wash. ; at 

 Albany, Corvallis, Eugene, Odell, Cottage Grove, Oakland, Canyon- 

 ville. Wolf Creek, Kirby, Holland, McLeod, and Siskiyou, Oreg. ; at 

 Yreka, Fort Jones, Scott Bar, and Sequoia National Park, Calif. 

 The National Museum has galls from Grants Pass and Goble (E. J. 

 Perkins), Oreg., and O. J. Murie collected galls at Cottage City. 



The young galls may be found in early July, becoming full-grown 

 in August; they contain pupae in mid-September and the writer 

 cut out living adults from the dry galls on November 10, January 13, 

 and February 14. The forest-insect collection has flies from Ash- 

 land, Oreg., which emerged November G and April 1. 



CYNIPS NIGRICENS Gillette 



This species was described from Iowa and Michigan. The writer 

 has found the galls at Bluemont, Va. ; at Ironton, Mo.; and they 

 were fairly common in the Chicago area, having been taken at 

 Evanston, Wilmette, and Kenilworth, 111. They start to develop 

 about Chicago about August 1 and begin to drop late in September. 

 They are much distorted in shape by mutual pressure in the cluster 

 and inside the larval cavity is scarcely visible in the thick nutritive 

 layer. During the winter on the ground the galls change shape, 

 becoming plumper. From galls collected at Ironton in fall of 1917 

 adults issued April 11 and May 1, 1920. 



The fly is described as having 13-segmented antennae. William 

 Beutenmueller, Avho has seen the type, writes me that this is evi- 

 dently a mistake. Flies he has reared and those I have reared all 

 have the antennae 14-segmented, A fly from Algonquin, 111., April 

 10, 1896 (Nason), determined by Gillette as '^ Gynlps mg)%cens,''^ 

 has 14-segmented antennae. 



CYNIPS PLUMBEA, new species 



Female. — Red, slightly infuscated on anterior and lateral lines, 

 ocelli and eyes black. Head coriaceous above, face pubescent ; from 

 above transverse, cheeks broadened behind the eyes; from in front 

 facial quadrangle one and one-fourth times as broad as high, malar 

 space .4 eye without groove, antenna filiform, 13-segmented, lengths 

 as (scape) 16 (width 10) : 9(7) : 32(6) : 26: 21: 18: 14: 12: 10:9(6.5) : 

 8:8:16, last with incomplete transverse groove on one side below 

 middle. Sides of pronotum smooth, pubescent. Mesoscutum shin- 



