210 
BRITISH GALLS 
Homop- 
tera 
Diptera 
)> 
Coleop- 
tera 
>9 
» I 
> I 
Discoloured, unilateral, oblong, or subspherical masses 
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 sativa Linn. Lucerne. 
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 ignorata Wachtl. 561 
Syn. Dasyneura ignorata Wachtl. Cccidomyia medi- 
caginis Bremi. 
Connold, Plant Galls, p. 245. Houard, No. 3515. 
Medicago falcata Linn. 5. Yellow Medick. 
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. 
Melilotus altissima Thiull. (officinalis Lam.). 73. 
Common Melilot. 
Flowers remarkably green, larva living in the interior 
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. 
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. 
