THE APPLE LEAF-MINER 49 
is known as the Unspotted Tentiform Miner of the Apple 
(Ornix prunivorella Chambers). The mines of this species 
(Fig. 11) arereadily distinguished from the trumpet mines by 
the skeletonized appearance of the upper surface. The other 
species is known as the Serpentine Miner of the Apple (Fig. 
12). | 
The Ribbed Cocoon-maker of the Apple (Bucculatrix pom- 
ifoliella Clemens), the Palmer Worm (Ypsolophus pometellus 
Harris) and the Case Bearers are near relatives of the Apple 
Leaf-Miner. 
DESCRIPTION OF THE INSECT. 
The Egg (Fig.13).—Apparently no one up to this time has 
seen the egg of the Apple Leaf-Miner. It is so small that it 
cannot be seen with the naked eye. It is not more than one- 
tenth of a millimeter in diameter; in other words, it would 
take 250 placed side by side to reach an inch. It is white, 

Fic. 13—The egg (greatly enlarged). 
translucent, elliptical in outline, and somewhat flattened. A 
drop of transparent wax, about twice the size of the egg, seals 
‘it to the leaf. 
The Larva (Fig.14).—A_ modification of Brunn’s descrip- 
tion of the larva follows: Length 5 mm. (3-16 inch). Form 
