498 
Aniwal Report of New York 
Aphis Thlaspeos, tlie aphis of the shepherds’ purse, Thlaspi Bursa- 
pastoris, appeared in the same work, p. 118. And also Aphis Galii 
scabri , which Mr. Walker supposes to he this same species. 
Aphis armata, a species named by Ilausmann, was published in 
1802, in Illiger’s Magazine, vol. 1, p. 439. 
Aphis Laburni, the aphis of the Laburnum vulgare , we next have, 
named by Kaltenbach in his Monograph of the plant-lice, p. 85. 
And the Aphis Galii and the Aphis Euphorbias of the same author 
Mr. Walker thinks are probably this species also. 
Aphis Dahlia ?, the dahlia plant-louse, described by Mosley in the 
Gardeners’ Chronicle, in 1841, p. 628, is the last name which this 
insect has received to our knowledge. 
We come next to notice the different kinds of vegetation which 
are attacked by this aphis, and the effects produced by its attacks, 
which are sometimes very curious. Those who have been accustomed 
to regard the aphides as being each a species pertaining to a particu¬ 
lar plant or to plants which are closely related and very similar to 
each other, will be astonished with the number and still more with 
the great dissimilarity of the plants and trees on which this black 
aphis of the bean establishes itself and rears its broods of young. 
The plant to which this insect is most injurious and which has 
caused it to be so much noticed, is the English or Windsor bean, one 
of its coarser varieties being also called the horse bean—the Vista 
Faba of Linnseus, Faba vulgaris of the botanists of the present day. 
In our own country this bean is less cultivated now than formerly, the 
bush and the pole beans, Phaseolus vulgaris and nanus being so much 
preferred to it. Watson (American Home Garden, p. 117), assigns 
as one of the causes of its being so little cultivated : “ If but a slight 
drought comes upon the plants in their growth, the black aphis will 
eat them up.” But in European husbandry this bean is extensively 
grown and is a common field crop, which is frequently injured and 
sometimes destroyed by this insect. Dickson (Practical Agriculture, 
vol. 2, p. 597), says: “ In such summers as are dry, beans are liable 
to be much injured by the attacks of the black fly, or what is often 
termed the dolphin, the whole field in particular cases being in danger 
of being destroyed in the course of a few days. It is mostly on the 
tops of the plants that the insect first appears.” Mr. Curtis (Farm 
Insects, p. 355), says : “ Their first appearance is very sudden, and 
their increase so prodigious, that crops suffer severely from their 
visits. In 1833 the beans were almost totally destroyed by them in 
Yorkshire. In 1841 they were abundant in my garden near the 
