282 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 
.09 inch high, and .U.V) to .00 inch in diameter. It differs from th«- gall on Acer dasy- 
tmrpum farther in having scattered unicellular hairs growing from the outer surface. 
There i* a tuft of pubescence over the opening beneath. The walls are rather thick, 
with numerous folds projecting into the cavity. The color is at times of the same 
dark hue as the leaves or it may be light yellowish-green. The gall occurs sparingly 
on shade trees at Normal, 111., and young forest trees in the neighborhood of 
Bloomington are sometimes badly galled. The egg, young, and adult of the mite 
have been found in the galls in June and July. 
The following insects also occasionally prey upon the elm : 
Lepidoptera. 
62. Parorgyia elintonii G. and R. "Found by dozens on the elm." (Fer- 
nald.) 
63. Parasa chloris H. S. (Elliot and Edwards. Papilio, iii, p. 128.) 
64. Halesidota carycc (Harris.) (Beutenmiiller. Ent. Amer., vi, p. 16.) 
65. Ichthyura americana (Harris.) Ohio. (Pilate, Papilio, ii, p. 67.) 
66. Datana ministra Riley. Ohio. (Pilate, Papilio ii, 67.) See Hickory 
insects. 
67. Edema albifrons (Abb. Sm.) On elms iu Canada. (Reed, Can. Ent., 
xv, p. 204,) See p. 152. 
68. Schizura ipomece Doubl. (Elliot.) 
69. Platysamia cecropia (Linn.) Riley. 
70. Telea polyphemus Hiibner. See p. 161. 
71. Tolype velleda (Stoll). See p. 165. 
72. Apatela occidentalis G. and R. (Faxon, Psyche, ii, p. 35.) 
73. Eacles imperialis (Drury.) 
74. Hyperchiria io (Fabr.) 
75. Zeuzera aesculi (Linn.) Boring in the trunk. (J. B. Smith in Gar- 
den and Forest, Jan. 15, 1890.) 
76. Charada deridens Guen. See. p. 166. 
77. Paraphia unipunctaria (Haworth.) See p. 185. 
78. Hibemiatiliaria Harris. Female moth issued in December (Riley MS. 
notes). See Linden insects. 
79. Metanema quercivoraria Gueuee. See p. 182. 
80. Petrophora diver silineata Hiibner. (Riley MS. Notes). See Oak in- 
sects, p. 189. 
81. Nephopteryx undulatella Clemens. 
82. Nephopteryx? ulmi-arrosorrella Clemens. 
83. Lophoderus triferanus (Walk.) See p. 195. 
84. Bactraf argutana Clem, (also on sumach, witch-hazel, and black- 
thorn.) 
85. Litkocolletis argentinotella Clem. Larva makes a tentiform mine in 
the under side or the leaves; rarely in the upper side. (Cham- 
bers.) 
86. Litkocolletis ulmella Chamb. Larva makes a flat mine in the upper 
side of the leaf. (Chambers). 
