ROSACEAE 



205 



Acari Lenticular chocolate-coloured pustules on the leaves, 



gregarious, often coalescent. 



Eriophyes pyri Pagenst, var. variolata Nal. 522 

 Connold, Veg. Galls, pis. 46, 76* ; Plant Galls, fig. 36. 

 Houard, No. 2913. 



,, On the leaf blade, usually on the inferior surface, a tuft 



of short, blunt, cylindrical or club-shaped hairs, whitish 

 at first, becoming rusty brown. Erineum sorbeum, Per- 

 soon. 



Eriophyes sp. 523 

 Greville, 1827, v., pi. 263. Houard, No. 291 1. 



Pyrus communis Linn. 49. Pear Tree. 

 Hymen- Brilliant translucent pustules, usually solitary, showing 

 optera equally on both surfaces of the leaf. 



MiCRONEMATUS ABBREVIATUS Hartig 524 

 Syn. Nemaius abbreviatus Htg. 

 Houard, No. 2872. 



Diptera 



Homop- 

 teia 



Acari 



Young fruit abnormally swollen, with numerous larvae 

 within. May to July. M. E. 



CONTARINIA PYRIVORA Ridley 525 



Syn. Diplosis pyrivora Ridley. 



Connold, Veg. Galls, pi. 123 ; Plant Galls, fig. 240. 

 Houard, No. 2855. 



Leaf margin rolled upwards and thickened, green or 

 yellowish. 



Perrisia pyri Bouch6 526 

 Syn. Dasyneura pyri Bouch6. 

 Houard, No. 2864. 



Leaves rolled towards the base, margins shrivelled and 

 crumpled. 



PsYLLA pyrisuga Forst. 527 

 Houard, No. 2867. 



Pustules on the leaves. See No. 519. 



Eriophyes pyri Pagenst 528 

 Connold, Veg. Galls, pi. 59 ; Plant Galls, figs. 239, 348. 

 Houard, No. 2871. 



Tufts of hairs, at first yellowish or reddish, becoming 

 rusty brown, forniing a felt occurring in patches on both 

 surfaces of the leaf, but usually on the inferior one. 

 Erineum pyrinum Persoon. 



Eriophyes sp. 529 



Greville, 1823, i., pi. 22. Houard, No. 2873. 



