DIPTERA. 67 



C. pilulae (Walsh). Oak-pill Gall. 



Me.— Mt. Desert. 



Mass. — Auburndale; Worcester (Thompson); Springfield (Steb- 



bins). 



Globose irregular wrinkled leaf -galls (Felt, 16-164 and 18-90). 



C. podagrae Felt, 09-291 and 16-159. 

 Mass.— Magnolia, Oct., 1908 (Cora H. Clarke). 



Narrow purplish galls on the under side of the veins (Felt, 



18-82). 



C. pustulata Felt, 09-291 and 16-156. Oak-blister Midge. 

 Mass. — Magnolia, Apr. 26 {Cora H. Clarke). Conn. — . 



Pustulate swellings on leaves of the black oak (Felt, 18-86). 



C. pustuloides (Beutenmueller), 07-390. 



Mass. — Worcester {Thompson); Springfield {Stebbins). 



Blister-like gall on the leaves of the scarlet and black oaks 

 (Felt, 16-171). 



C. serrata Felt, 08-380 and 16-154. 

 Mass. — Near Boston, June, 1908 {Cora H. Clarke). 

 Circular blister leaf -galls on scarlet oak (Felt, 18-86). 



C. simpla Felt, 09-291 and 16-157. 

 Mass. — Magnoha {Cora H. Clarke). 



Oval pustulate swellings on leaf of black oak (Felt, 18-86). 



C. sobrina (Felt), 07-158 and 16-168. 

 Mass. — Worcester {Thompson) . 



Irregular pustulate leaf-sweHings on black oak (Felt, 18-86). 



Contarinia Rondani. 



C. canadensis Felt, 08-394. Ash-midrib Gall. 

 Me.— Mt. Desert. 



Mass.— Auburndale; Springfield (Stebbins). Conn. — . 

 Large tumid midrib gall on white ash (Felt, 18-179). 



C. clematidis Felt, 08-393. Clematis-bud Gall. 



Mass. — Worcester (Thompson); Springfield (Stebbins). 

 Irregular subglobular bud-galls (Felt, 18-129 and 18-105). 



C. p3rrivora (Riley). Pear Midge. 

 Conn.- — -Meriden; Watertown; Mystic. 



Introduced; deforms young pears (Felt, 08-393, 13-97 and 

 18-134). 



C. setigera Lintner. Melon-tip Midge. 

 Mass.— Lowell, Aug.-Sept. 1888. 



Curls and slightly enlarges the tips (Felt, 08-394 and 18-189), 



C, spiraeina Felt, 11-547. Spiraea Cabbage Gall. 



Mass. — Magnolia, galls collected June 2, 1910, adults emerged 



Apr. 6, 1911 (Cora H. Clarke). 



A terminal cabbage-Hke bud-gall (Felt, 18-133 and 18-104). 



