306 The Scottish Naturalist. 



skin rough, with small prominences. Dryophanto 



\longive?itris. 

 4 to 5 mm. diameter, pale yellow, or one side reddish or 

 brown-red, shining, bare. D. divisa. 



27. Flattened, lenticular, circular, becoming more convex after 



falling from the leaves, 28. 



Circular, about 2 mm. across, depressed in centre, covered 

 with adpressed silky brown hairs. Neuroterus numisniatis. 



28. Nearly hairless on both surfaces, pale green to red, margin 



turned up, often scattered. N. Iceviusculus. 



Side next leaf smooth, other side covered with rusty brown 



hairs, edges flat. N. (Jenticularis) baccarum. 



Side next leaf hairy, edges curled up, red. N. fumipennis. 



29. Pea-sized, irregularly globular, green, with small brown inner 



gall in large chamber of outer gall. Andricus curvator. 

 Globular, projecting much on lower, slightly on upper 



surface, 30. 



Circular, about 4 mm. across, no inner gall, sunk in leaf. 



scarcely projecting on either surface, green, no inner gali. 



N. {vesica trlx) numismatis. 



30. About 5 mm. diameter, green, streaked with red or purple, 



juicy and soft, smooth, bare. N. baccarum. 



About 4 mm. diameter, soft, covered with long white hairs. 



N. ( tricolor) fa m ipen n is. 



31. Inner gall in pea-sized swelling, as under 29 ; June. Andricus 



\c iterator. 

 Oval swelling on mid-rib, 2 or 3 mm. long, green, no inner 



gall ; August. A. itestaceipes) Sieboldii. 



Similar galls (fide Mayr) often produce A. (noduli) radicis. 



32. On margins of leaf, sessile, ^. 

 Spindle-shaped, 6 to 8 mm. long, on short stalk, green, with 



red longitudinal lines ; June to October. A. seminaiionis. 

 $5. Smooth, ovoid, 1 or 2 mm. long, greenish yellow ; June and 

 July. Neuroterus (albipes) Iceviusculus. 



Oval, broader above, 4 mm. long, granular, shining, greenish 

 yellow or reddish, with pale dots : May. Dryophanta 

 {verrucosa) divisa. 

 Oval, or ovate, 3 or 4 mm. long, irregularly ribbed lengthwise, 

 green or red-brown ; J une and July. Andricus marginalis. 

 34. Hairy, 35- 



