Entomological Botany. 4115 



attached to the broom that the larva must feed on some part of 

 the plant. 



Cytisus Laburnum. Laburnum. 



Though no British plant, yet it grows well in most gardens, 

 and there is a very fine tree of it in Torwood ; the leaves are 

 mined in July and autumn by the larvae of Cemiostoma laburnella. 



Ononis. Rest-Harrow. 



As feeding on this genus of plants, Speyer enumerates Polyommatus 

 Alexis, Polia tincta, Calocampa vetusta and C. exoleta, Heliothis 

 Ononidis (a Noctua intermediate between dipsacea and scutosa, but 

 not yet known as British) and Fidonia ononaria (which appears to be 

 confined to the South of Europe). 



Ononis arvensis. Trailing Rest-Harrow. 



In May the larvae of Pterophorus phaeodactylus may be found 

 abundantly on this plant. 



Ononis spinosa. Spinous Rest-Harrow. 



Speyer enumerates as feeding on this species Heliothis marginata, 

 (of which Guenee remarks u not rare, but rather difficult to rear "), 

 Eupithecia centaureata and Pterophorus calodactylus, bj which 

 name, I believe, he means our P. acanthodactylus, which has on 

 several occasions been taken rather freely amongst rest-harrow, though 

 I am not aware that the larva has been found on that plant. Gracilaria 

 Ononidis mines the leaves of this plant in April and May, but 

 hitherto it has escaped the researches of all the Micro- Lepidopterists of 

 this country, the perfect insect having only been taken by sweeping. 



Medicago falcata. Yellow Sickle Medick. 



Speyer mentions as feeding on this, Lasiocampa Trifolii and 

 Euclidia Mi. 



Medicago sativa. Lucerne, 

 Medicago lupulina. Black Medick, 

 Medicago maculata. Spotted Medick, 



Are not known as the food of any special species, but they are all 

 plants deserving of careful observation. 



