210 



BRITISH GAL1.S 



Homop- Discoloured, unilateral, oblong, or subspherical masses 

 tera on the subterranean part of the stem. Solitary or coales- 

 cent. The e tumours proceed from an expansion of the 

 parenchyma through the bark, and have no internal 

 cavity. Their surface is smooth at first, becoming fissured. 

 Aphis black. 



Aphis laburni Kalt. 560 

 Houard, No. 3376. Buckton records this aphis from 

 laburnum pods in July and August, but does not allude to 

 a gall. 



Medicago satiya Linn. Lucerne. 

 Diptera Soft, hairy, ovoid, yellowish-green swelling, consisting 



of a deformed shoot surrounded by two swollen stipules, 

 opening at its summit at maturity. Larvae gregarious. 

 M. E. 



Perrisia ionorata Wachtl. 561 

 Syn. Dasyneura ignorata Wachtl. Cecidomyia medi- 

 caginis Bremi. 

 Connold, Plant Galls, p. 245. Houard, No. 3515. 



Medicago falcata Linn. 5. Yellow Medick. 

 II Flowers and seed pod swollen, reddish. Larvae gre- 



garious. M. E. 



CONTARINIA LOTI De Geer 562 

 Syn. Diplosis loti De Geer. 

 Connold, Plant Galls, p. 245. 



MelUotus altissima Thiull. {officinalis Lam.). 73. 

 Common Melilot. 

 Coleop- Flowers remarkably green, larva living in the interior 



tera of the stem and near the apex. 



Apion meliloti Kirby 563 

 Houard, No. 3543. 



Trifolium pratense Linn. 112. Purple Clover. 

 „ Floral axis thickened ; calyx swollen, containing a larva. 



Apion assimile Kirby 564 

 Ormerod, Manual, p. 55. Houard, No. 3580. 



>> Excrescences on the roots, each containing a larva. 



Apion varipes Germar 565 

 Houard, No. 3587. 



II Flowers transformed into a tubercular hard mass. 



Larva within a cavity in the floral axis. 



Apion apricans Herbst 566 

 Ormerod, Manual, p. 55. Houard, No. 3581, 



