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 reference 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 larvae of which the imago 

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

 or lower) mined is stated. 



MAGNOLIACEJE. 



Magnolia umbrella (and probably some other Magnolias). 



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

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

 and it may prove to be P. liriodendronella Clem. 



LlEIODENDRON TULIPIFERA. Tulip-tree. 



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

 ing, linear mine on either surface of the leaves. 



CRUCIFER^. 

 Brassica oleracea. 



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

 of Cabbage and some other ijlants of this order. 



TILLIACE^. 



Tillia AMERICANA. Basswood or Linden. 



Lithocolletis lucetiellaj Clem. Larva in tentiform mine in under sur- 

 face of leaves. 



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

 leaves. 



GoleopJiora tilUcefoUella, Clem. Larva only is known. It lives in a 

 case and feeds on the under side of leaves. 



ANACAEDIACE^. 

 Ehus, sp. ? 



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



Ehus toxicodendron. Poison Oak or Poison Ivy. 



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

 in upper surface of the leaves. 



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

 externally, rolling the leaf. 



