108 BULLETIN UNITED STATES GEOLOGICAL SURVEY. 



character of mine, &c, having been noted, and, better still, if it be 

 recognized as belonging to any established genus, a reference to the 

 catalogue will give the names of the species known to feed upon that 

 plant; and a refereuce to the published accounts of those species will 

 usually enable one to determine whether the species. is new, or to recog- 

 nize it if already made known. 



When only the larva is known, that fact is distinctly stated; when the 

 food of the imago is known, that also is distinctly stated. In all other 

 cases, the remarks refer to the food-plants of larvte of which the imago 

 also is kuowu ; and when the larva is a leaf-miner, the surface (upper 

 or lower) mined is stated. 



MAGNOL1ACE.E. 



Magnolia umbrella (and probably some other Magnolias). 



The larva of Phyllocnistis magnoliceella Cham, makes a long, winding, 

 linear, mine on either surface of the leaves. The imago is unknown, 

 and it may prove to be P. Uriodendronella Clem. 



Liriodendron tulipifera. Tulip-tree. 



The larva of Phyllocnistis Uriodendronella Clem, makes a long, wind- 

 ing, linear mine on either surface of the leaves. 



CRUCIFERJ3. 

 Brassica OLEEACEA. 



The larva of Plutella cruciferarum feeds on the under side of the leaves 

 of Cabbage and some other plants of this order. 



TILLIACE^. 



Tillia Americana. Basswood or Linden. 



Lithocolletis lucetiella, Clem. Larva in tentiform mine in under sur- 

 face of leaves. 



L. tillkcella, Cham. Larva in tentiform mine on upper surface of 

 leaves. 



Coleophora tilUafoliella, Clem. Larva only is known. It lives in a 

 case and feeds on the under side of leaves. 



ANACARDIACEiE. 

 Rhus, sp. f 



Chrysocoris erythriella, Clem. The larva feeds on the # fruit-racemes. 



Rhus toxicodendron. Poisou Oak or Poison Ivy. 



Lithocolletis guttijinitella, Clem. The larva feeds in a flat blotch mine 

 in upper surface of the leaves. 



Oracilaria rhoifoliella, Cham. Larva at first mines, and then feeds 

 externally, rolling the leaf. 



