33 



The list is, no doubt, quite imperfect, and in a few years will 

 be largely supplemented : 



ORDER. GROSSULACEyE. 

 Ribes Floridum, Linn. 



" var. officinale, Linn. 



" rubriwi,var.officinaleX-'\^n. 



ORDER. CAPRIFOLIACE^. 

 Sainbuscus Canadensis, Linn. 

 '* pub ens, Michx. 



ORDER. ULMACE^. 

 Uhnns, Americana, Linn. 

 " racemosa. Thorn. 

 fulva, Michx. 



ORDER. CUPULIFER^. 

 Querciis alba, Linn. 

 Fagus ferry ginea , A i t . 

 Cory Ins Americana, Walt. 



" rostrata. Ait. 

 Carpinus Americana, Michx. 



ORDER. BETULACEyE. 

 Betula alba, Linn. 



*• excelsa. Ait. 



** lent a, Linn. 

 Alnus iticana, Willd. 



" serrulata. Ait. 



ORDER. SALICACEiE. 



Salix humihs, Mar. 



" lucida, Muhl. 



" viminalis, Linn. 



" alba, Linn. 

 Populus tremuloides, Michx. 



ORDER. TILIACE^. 



Tilia Americana, Linn. 

 " EuropCBa, Linn. 



ORDER. A( ERACE.E. 



Acer spicatum, Sam. 



" saccharinmn, Warz. 



" dasycarpnm, Ehr. 



" rubrnm, Linn. 

 JSIegundo aceroidcs, Moen. 



ORDER. ROSACEiE. 



Primus A mericana. Marsh. 



" domestica, Linn. 



" Pennsylvanica, Soi. 



" Virgi?iiana, D. C. 



" Serotina, D. C. 



" vulgaris, Linn. 

 SpiroBa opulifolia, Linn. 



" salici folia. Linn. 



" tomentosa, Linn. 

 -Cratcegus coccinea, Linn. 



" tomentosa, Linn. 



" Crux-galli, Linn. 



Pyrus Mains, Linn. 



" communis, Linn. 



" coronaria, Linn. 



" arbutifolia, Linn. 



" Americana, D. C. 

 A melanchier Canadensis, Lorr. 

 and Gr. 



balsamifera, Linn. 



It will be seen that this species has been observed to feed on 

 49 specimens of plants, which belong to no less than 20 genera, 

 and 9 Natural orders. I hope soon to be able to give the result 

 of my observations upon other species of BombycidcB. 



