Coleop- 

 tera 



Diptera 



Homop- 

 tera 



Acar! 



Fungi 



ON THE HAWTHORN 207 



Crataegus monogyna Jacq. in. 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 



Syn. 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 

 tangled masses of a reddish-biown colour. May to July. 

 Aphis bright green, slighdy 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 coalsscent, 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. Krineum clandestinum Greville. Erineum oxya- 

 canthae Persoon. 



Eriophyes goniothorax Nalepa 544 



Syn. Phytefiius goniothorax Nalepa. 



Connold, Veg. Galls, pis. 53, 76a ; Plant Galls, fig. 130. 

 Houard, No. 2948. 



Thickish blisters of irregular shape on tjie leaves, green 

 at first, then dark brown, and frosted with the spores. The 

 leaves do not curl. 



Taphrina bullata Tulasne 545 



Syn. Exoascus buUatus Fckl. Ascomyces bullatus 

 Berk. 



Massee, Brit. Fung. Flora, iv, p. 15. 



