THE MOUNT DESERT REGION 173 



Phytophaga Eondani 



P. RiGiDAE 0. S. Beaked willow-gall. Bar Harbor ; Salisbury 

 Cove. 



Oligothrophus Latreille 



0. sp. Long Pond, June 20. 



AsPHONDYLiA Loew 



A. ANTENNAEiAE Wheeler. Everlasting-bud gall. Bar Har- 

 bor, Aug. 15. Corn-shaped bud gall on Everlasting (An- 

 tennaria plantaginifolia) . 



CiNCTICORNIA Felt 



C. MAGALis 0. S. Oak-vein gall. Bar Harbor. A vein gall 



on the leaves of the red oak. 

 C. piLULAE Walsh. Oak-pill gall. Bar Harbor; Salisbury 



Cove. Round, hard, rough galls on the leaves of the red 



oak. 



CONTARINIA Roiidaui 



C. CANADENSIS Felt. Ash-Hiidrib gall. Bar Harbor, June. 



C. viRGiNiANAE Felt. Choke-chcrry midge. Salisbury Cove. 

 This midge causes swollen deformed fruit on the choke- 

 cherry. 



C. spiRAEiNA Felt. Spiraea cabbage-gall. S. W. Harbor. A 

 terminal cabbage-like bud-gall. 



Trishormomyia Kieffer 



T. CANADENSIS Felt. ' Juue-berry lipped gall.' S. W. Harbor; 

 Bar Harbor, June. A truncated red-lipped gall on the 

 shadbush (Amelanchier canadensis). 



Obolodiplosis Felt 



0. ROBiNiAE Hald. Locust-leaf midge. Salisbury Cove, July 

 14. Forming rolled leaf-margins on locust {Robinia 

 pseudo-acacia). 



Mycodiplosis Eiibsaamen 



M. popuLiFOLiA Felt. Salisbury Cove; Bar Harbor, Aug. 

 Bullet-like swelling at the base of poplar leaves. 



