66 Supplementary List 



43. Nematus pomum. Beut. Cat., p. 263-264. Willow. Mass. June. Walsh '66, p. 255 



-256, cf' 9 . Rounded, yellowish on under side of leaf. Provancher '82, vol. 13, 



p. 292. 9 . Saw fly larva; single cell, plate 21, 43. 

 61. Cecidomyia verruca. Walsh '69, p. 226. Salix humilis. Mass. Oct. Walsh '64, p. 



606. Dome-shaped, glabrous, above; turret-like, below. Cells in level of leaf 



proper, plate 21, 61. 



Hormomyia verruca Walsh. 



62. . Walsh, '66, p. 227. S. enigma. Probably acarus. Willow mop gall. Mass. 



Oct. Aborted branch; twists to a dense, dark grey mop of dried leaves. Inner 



ones short and smooth, outer very hairy, plate 21, 62. 

 70. Cecidomyia nodulus. Walsh '64, p. 599-601. Willow species. Mass. May- June. Like 



club-gall, but less abrupt and does not destroy growth of stem, plate 21, 70. 

 Rkabdophaga nodula Walsh. 



75. Euura ovum. Walsh '69, p. 49. Salix species. Mass. Oct. Ovoid, scurfy elevations 



on stem; single cell, plate 18, 75. 

 98. Cecidomyia batatas. 0. S. Felt '06, p. 119-122. Rhabdophaga batatas Willow, Mass., 



R. I. May-June. Galls strung along stem; irregular, woody, plate 21, 98. 

 Rhabdophaga batatas O. S. 



107. Nematus desmodioides. Walsh '66, p. 257-258. Weeping willow. Mass. Late June, 

 Oval excrescence above and below leaf blade, plate 21, 107. 



110. Cecidomyia strobiloides. Walsh '66, p. 223. C. strobiliscus. Willow .species. 0. S. '67, 

 p. 203. C. strobiloides (n. sp.). Mass., N. H. June- July. Pine cone forms on 

 stem, plate 21, 110. 



Rhabdophaga strobiloides Walsh. 



238. . Willow. Mass. July. Conical, smooth above leaf; fleshy with small cavity 



below, plate 21, 238. 



WITCH-HAZEL {Hamamelis) 



101. Hormaphis spinosus. Cook '05, p. 847, fig. 39. Hamamelistes spinosa. Witch-hazel. 



Mass. July. Deformation of bud; spiny, plate 20, 101. 

 143. Hormaphis hamamelidis. Pergande Dept. Agr. 1901, p. 1-24, fig. 1-11. Witch-hazel, 



Mass. May. Cone on upper side of leaf, on or near lateral veins, plate 20, 143. 

 201. Cecidomyia. Witch-hazel. Mass. June. Short fold downward along vein of leaf plate 



20, 201. . 



Unknown. 



265. Cecidomyia. Witch-hazel. Mass. July. BHster not elevated above surface of leaf. 

 Color on lower side purple brown fading to magenta and pink; above color more 

 intense, center deep magenta with clear pink areola, plate 19, 265. 

 Known, not reared, unnamed. 



