64 Supplementary List 



235. Cecidomyia. Amelanchier canadensis. Mass. July. Conical elevation densely clothed 

 with coarse, short, blue-grey pubescence on upper side of leaf. Extends out as 

 cylindrical turret 5 mm. — opening at apex on under side. Walls leathery, plate 

 19, 235. 



Hormomyia canadensis Felt. 



251. Cecidomyia. Amelanchier. Mass. July. On upper side of leaf a slit parallel to lateral 

 veins 6 mm. long with slightly elevated margins; below thin, fleshy, white comb 

 elevation, free margin with short digitations. 

 Cecidomyiid, known, not reared, unnamed. 



SHEPHERD'S-PURSE (Capsella) 



224. Albugo Candida. Capsella bursa-pastoris. Mass. July. White, oval and oblong patches. 

 Leaves, stems and pods swollen. 



SPIR^A 



86. Cecidomyia. Spircea salicifolia. Mass. July. Aborts end of shoot into a dense tuft of 

 linear threads. 



(?) Horviomyia clarkei Felt. This species has been reared from a terminal bud gall on Spirjea, 

 though not from the fimbriate one evidently characterized under this number. 



104. Cecidomyia salicifolia. 0. S. 2 New N. A. Cec. Spircea tomentosa. Mass., R. L, N. H. 

 Aug. Cells simple, made by edges of leaves folded together (see 262) . Plate 20, 104. 

 Rhabdophaga salicifolia Felt. 



262. Cecidomyia salicifolias (?). .S. Spiraa. Mass. July. Leaves near summit of stem 

 are aborted and transformed into pouches with little of blade remaining. Suc- 

 culent, but walls not very thick. Gall 6 mm. in diameter and 1.5 cm. long. Mar- 

 gins tightly closed except for point near tip of leaf, plate 19, 262. 

 Rhabdophaga salicifolia Felt. 



SUMAC (Rhus) 



96. Pemphigus rhois. Walsh '69, p. 108. Rhus typhina and R. glabra. N. H. Sumac tomato 



gall, plate 18, 96. 



97. Fungus or Eriophyes. Rhus copallina, R. glabra. Mass. Oct. Curling end of stalks 



plate 19, 97. 



SWEET FERN (Myrica asplenifolia) 



267. Oligotrophus asplenifolia. Sweet fern. July. Bits of leaf margins rolled under and 

 thickened forming reddish, shining galls about 2 mm. long, plate 10, 267. 

 Janeliella asplenifolia Felt. 



THORN (Crataegus) 

 180. Cecidomyia. Walsh Canad. Entom. '69. Crataegus crus-gallce. Thorn. Mass. Late 

 May. Double crest; along veins near leaf margin with long white hairs on upper 

 side of leaf, plate 18, 180. 



Hormomyia cralcegifolia Felt. 

 233. Cecidomyia. White thorn. Mass. July. Above leaf along mid-rib, 1-3 on leaf; when 

 young, conical, pale protuberance, when mature, a globular gall with deep hole in 

 center and covered with gland-tipped prominences so that it appears mossy Digi- 

 tate tufts, plate 20, 233. 



Lestodiplosis cralisgifolia Felt reared, though not the producer. 



