466 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 4 



Longitudinal fold galls dwarfing leaf Cecidomyia sp. 



Oval, white cocoons on twigs Rhabdophaga popidi Felt. 



Irregular, subcorneal twig or petiole gall, length, 1 cm Cecidomyia sp. 



Decaying wood Kronomyia populi n. sp. 



PopuLTJS CANDiCANS (Balm of Gilead) 

 Roundly conic leaf gall, diameter, 3 mm Cecidomyia sp. 



PORTTJLACA OLERACEA 



Stem gall Lasiopiera portulaccoe Felt. 



PoTENTiLLA (cinquefoil) 

 Internodal stem gall Cecidomyia sp. {potentillcecavXis Steb.) 



Prosopis (mesquite) 



Aborted fruit Asphondylia prosopsidis Ckll. 



Fusiform bud gall Cecidomyia sp. 



Prunus (Cherry) 



Swollen deformed fruit, P. virginiana Contannia virginianioe Felt. 



Swollen deformed fruit, P. virginiana Parallelodiplosis acernea Felt. 



Swollen deformed fruit, P. virginiana Itonida canadensis n. sp. 



Swollen deformed fiuit, P. virginiana Arthrocnodaz apiphila Felt.i 



Swollen deformed fruit, P. virginiana Lestodiplosis sp.i 



Apparently from same gall Rhizomyia absobrina Felt. 



Probably from same gall Cecidomyia cerasiphila n. sp. 



Swollen deformed fruit on wild cherry, P. ? melanocarpa. . Dasyneura pergandei n. sp. 

 Elliptical, polythalamous gall on raceme axis, length, 27 mm., P. virginiana. 



Cecidomyia sp. (racemi Steb.) 

 Irregular, thickened, folded leaf; on P. virginiana. . . .Mycodiplosis cerasifolia Felt. 

 Terminal shoot and bud gall, diameter, 1.5 cm.; on P. serotina. 



Cecidomyia serotinoe O. S. 



Variable, oval or fusiform twig galls; on P. serolina Cecidomyia sp, 



Lestodiplosis cerasi Felt. 



Psedra (Virginia creeper) 



Tumid rib gall, length, 1 cm Cecidomyia sp. 



'irregular root gall, 2 to 3mm Cecidomyia sp. 



Pyrus (pear) 

 Deformed young fruit Contarinia pyrivora Riley. 



Qtjerctjs (oak) 



Fruit 

 Reared from larvae found between the seed coats of an acorn . . Dasyneura glandis Felt. 



Flower Galls 

 Reared from undescribed galls on blossoms of oak Lasioptera querdfloroe Felt. 



1 Predaceous or scavenger. 



