ON THE HAWTHORN 
207 
Coleop 
ter a 
Diptera 
Homop- 
tera 
J 9 
Acari 
9 9 
Fungi 
Crataegus monogyna Jacq. hi. Common Hawthorn. 
Ovary feebly swollen. 
Anthonomus pomorum Linn. 539 
Houard, No. 2939. 
Terminal leaves deformed, forming a rosette, their 
surfaces covered with little green or reddish tubercles. 
Petiole and lower part of midrib swollen. Larvae gre¬ 
garious, reddish. M. E. Imago, spring, II. 
Perrisia crataegi Winn. 540 
Svn. Cecidomyia crataegi Winn. 
Connold, Veg. Galls, pi. 79; Plant Galls, fig. 128. 
Houard, No. 2942. 
Little red swelling on the leaf. 
PSYLLA CRATAEGI Schrank 541 
Houard, No. 2951. 
Leaves of the young shoots blistered and rolled, forming 
tingled masses of a reddish-brown colour. May to July. 
Aphis bright green, slightly mealy ; cornicles dark at the 
tips. 
Aphis crataegi Buckton 542 
Buckton, ii., p. 35. Connold, Plant Galls, fig. 127. 
Small lenticular pustules on the upper surface of the 
leaf, with a small opening on the inferior one. Gregarious, 
often coalescent, orange, brown, or purple. 
Eriophyes crataegi Can. 543 
Syn. Phytoptus crataegi Can. 
Connold, Veg. Galls, pi. 50; Plant Galls, fig. 129. 
Houard, No. 2950. 
Margins of the leaf tightly rolled inwards, colour normal. 
Interior of the roll lined with short club-shaped brown 
hairs. Erineum clandestittum Greville. Erineum oxya- 
canthae Persoon. 
Eriophyes goniothorax Nalepa 544 
Syn. Phytoptus goniothorax Nalepa. 
Connold, Veg. Galls, pis. 53, 76 a ; Plant Galls, fig. 130. 
Houard, No. 2948. 
Thickish blisters of irregular shape on the leaves, green 
at first, then dark brown, and frosted with the spores. The 
leaves do not curl. 
Taphrina bullata Tulasne 545 
Syn. Exoascus bullatus Fckl. Ascomyces bullatus 
Berk. 
Massee, Brit. Fung. Flora, iv, p. 15. 
