Diplolepia fulgsns (Gill.). 190. ttg.JJJ. The spaoies wae described from 
specimens from S.Bak. but the galls were lost or confused with others. 
The types agree with adults reared from this root gall on Rosa blanda 
In the Chicago area. 
Stem swellings 
Diplolepis dichlocerus (Harris). 189. Fig.J22. fusiform, up to SO by 1J mm. 
covered with prickers, rarely smooth. 
Diplolepis fusiformans (Ashm.). 191. Fig.JJS. Smaller fusiform or abrupt 
one-sided corky enlargements of the stem, up to JO by 7 mm. 
Diplolepis multispinosa (Gill.). 195. Fig.JJ8. Abrupt, irregularly lobed, 
spiny subterminal stem swellings. 
Diplolepis nodulosa (Beut.). 197* Pig.525* Scarcely noticehle enlargement 
at base of lateral branches and bearing many leaf scars, the distal 
end of the branch dead, containing from one to five cells. 
Diplolepis verna (O.S.). 206. Fig.524. Rounded swellings on small branches 
described from the D.C.area# Nodulosa is probably a synonym of it. 
Diplilepis mayrl (Schlecht.). 194. A specimen reared from a gall on a rose 
in a nursery in N*J. was determined as this European species. Similar 
adults have been reared from a lobed terminal stem gall on Rosa 
rubiginosa in Cfetio, the adults emerging May 12—18. 
Leaf galls 
Diplolepis rosae (L.). 201. Fig.557. Mossy Rose Gall. On Sweetbriar and 
occasionally on Rosa rugosa. An European species on an introduced 
European host plant. Brodie records that the galls first appeared at 
Toronto in 1868. 
Diplolepis bicolor (Harris). 188. Fig.556. Spherical, 7-10 mm. in dia., 
covered with spines about as long as diameter of the gall, the leaf 
obliterated if the cluster is large. 
Diplolepis hebulosa (Bass.). 196. Fig.559* Similar but smaller, 5-6 mm. 
in dia, the spines weak, on under side of leaf. 
Diplolepis pustulatoides (Beut.). 198. Similar but smaller, 4-5 mm. in dia., 
wall thin, on upper side of leaf and dropping with it. 
Diplolepis ignota (O.S.). 195- Fig.54l. Mealy Rose Gall. Globular, up to 
15 mm. in dia, several often coalescing into a mass, covered with a 
mealy white bloom, hard, many-celled, attached on under aide of leaf. 
Diplopepis gracilis (Ashm.). 192. Fig.540. Regal Rose Gall. Globular with 
a flattened top like a patty-pan squash, single or in cluster on 
under side of leaflets, dropping with leaf in fall. 
Diplolepis rosaefolii (Ckll.). 202. FLg.542. Rose Lentil Gall. Lentil- 
shaped thickenings of parenchyma, more conspicuous on under side, 
single or in small group, 5 mm. in dia., dropping with the leaf. 
Gall unknown 
Diplolepis rubicola (Kieffer). 205. "Probably North American." 
Gall on Nepeta L. - Oat Mint, Ground Ivy 
Liposthenes glechomae (L.). 178. Fig.544. Globular, green, fleshy, 8-11 mm.in 
dia., turning brown in August. An introduced European species on an 
introduced European host j>lant, N epet a h ederacea . Gill-over-the—ground. 
Galls on Silphium L. - Rosin Weed, Compass Plant 
Antistrophus laciniatus (Gill.). 162. Fig.548. Galls hidden among the disk 
florets in flower head and found only when the head is brokvn open 
Antistrophus rufas Gill. 165 and 
Antistrophus minor Gill. I 65 . Fig. 547 . Cells hidden in stem of Silphiu m 
laciniatum . 
Antistrophus silphii Gill. 166. Fig*555* Club-shaped subterminal stem swelling 
on stem of Si lphium p erfolia tum. 
85 
