162 THE CANADIA.N ENTOMOLOGIST. 



Mines leaves of CEnothera biennis. The mine begins in a winding 

 track, which crosses back and forth, often becoming confluent. The 

 dark, granular frass forms a rather definite line through the middle. 



When ready to transform, the larva deserts the mine and incloses 

 itself in a dense, oval, white silk cocoon formed against the midrib or in 

 a wrinkle of the leaf. Pupa dark brown, not especially characteristic. 

 Imago appears in nine or ten days. 



The mines of this species were discovered about the middle of 

 August, 1895, for the first and, so far, only time, on a small and ragged 

 plant of wild Evening Primrose, and although other plants of the same 

 species, as well as some cultivated varieties, were growing in close 

 proximity, not a mined leaf could be discovered on any of these, nor has 

 the insect, in this locality at least, rea]ipeared since that date. 



Less than a dozen moths were reared, of which one or more 

 examples were sent to Lord Walsingham, Dr. Fernald, and the National 

 Museum. 



Epcrineiiia pimpinella, n. sp. 



Antenncc slender, rather more than one-half the length of the wings, 

 dark cinereous, with short, dense, whitish jnibescence, basal joint thickly 

 scaled. Palpi rather coarsely scaled, second joint twice the length of 

 apical, dark brownish-gray sparsely sprinkled with buff. Head and 

 thorax gray brown with slight purplish iridescence in certain lights. 

 Patagia oval, silvery, semi-erect. Fore 7vijigs varying in general colour 

 from dark slate-gray to brownish, with an intermingling of dingy while 

 scales and having a generally "smudged" appearance, when fresh dis- 

 ])laying purplish reflections. The three rounded dorsal tufts are of 

 spatulate stalked scales overlying a fine paler fringe. Hind wings 

 narrowly lanceolate, with long fine silky fringes. Abdomen slender, dark 

 silvery gray, with indistinct whitish annulations, most pronounced 

 laterally. I.egs gray with dingy white mottlings and with long bristle-like 

 cili?e at each joint. Alar expanse 12 to 14 mm., length of body 5 to 6 

 mm. 



Eggs (obtained by placing fresh leaves in jar in which several 

 moths of both sexes had emerged) scattered along the edges of the 

 leaves, very minute, 0.25 mm. in length and less than half that in 

 diameter, oblong in form, colour greenish-white with sculpturing visible 

 only under the microscope, barely discernible by ToUes lens. On July 

 2nd by close examination found them on several leaves of the plant out 



