34 THE CANADIAN ENTOMOLOGIST. 



For many years I have searched the leaves of the Sassafras officinale 

 for " Micro " larvae, but have never found a trace of one until this 

 summer (June, 1875), when the larva of this species made its appearance 

 in great numbers. It is an ordinary white Gracilaria larva, which makes 

 a linear crooked mine, ending in an oblong tentiform mine along the mid- 

 rib on the under side of the leaf. When about half grown, the larva 

 leaves the mine and rolls the leaves (chiefly the very young ones) down- 

 wards into a clumsy imitation of a cone. It pupates in a yellow cocoon 

 on a leaf. 



LYONETIA. 



L. gracilella. N. sp. 



Snowy white with a silvery tinge. Antennae dark brown above, 

 becoming deeper towards the apex, and paler below ; palpi white, stained 

 externally with fuscous ; fore legs with the anterior surface of the tibiae 

 and tarsi fuscous, and the joints of the tarsi of the middle and hind legs 

 annulate with fuscous ; upper surface of the abdomen pale silvery 

 fuscous. Hind wings and under surface of the fore wings brown, with 

 short yellowish white lines along the course of the fold on the under 

 surface of the fore wings ; ciliae of the hind wings and dorsal ciliae of 

 the fore wings nearly to the Up brown, with strong purple reflections ; behind 

 the middle of the wing length, along the middle of the wing, is a short 

 brown streak, in some lights golden brown, which presents an obtuse angle 

 towards the costa, and the point of which intersects in the middle a 

 brown or golden brown streak or narrow fascia, which crosses the wing 

 at the beginning of the ciliae, is a little concave towards the base, and is 

 extended along the extreme costa to the base of the wing, and on the dorsal 

 margin encloses a small white spot ; behind this fascia is an orange yellow 

 patch 7chich extends to the rather large circular velvety black apical spot ; 

 behind the fascia are three short blackish costal streaks in the ciliae, per- 

 pendicular to the costal margin, and equally distant from each other ; 

 opposite the last of these, and separated from it by the point of the orange 

 patch, is a rather long and narrow dorsal black streak also perpendicular 

 to the margin, and between this streak and the fascia is a short broad 

 fuscous hinder marginal line at the base of the dorsal cilia;. Costal and 

 apical ciliae silvery white, and behind the apical spot is a transverse fuscous 

 line across the middle of the ciliae, which sends back through the tip a short 

 and rather indistinct fuscous "hoof A I. ex. a little over x /i inch. Ken- 

 tucky in June. 



