37 
surface of leaf. This waxen rim is doubtless homologous to the verti- 
cal fringe of certain species, and may vary in direction from vertical, 
underneath the case, to a lateral fringe, having the general appear- 
ance of a true lateral fringe. In the removal of dried specimens, this 
waxen rim usually remains attached to the leaf. Margin of case cren- 
ulated by a narrow rim of closely set wax tubes. On cephalic margin 
a pair of small setae may occur, and a pair also on caudal margin. 
Just within caudal margin on dorsum, caudad of vasiform orifice, there 
is a somewhat larger pair. Dorsum without pores and papillae, and 
there is no dorsal waxy secretion. The abdominal segments are but 
moderately distinct; thoracic segments obscure. 
Vasiform orifice broadly ovate, almost as broad as long. Opercu- 
lum less than one-half length of orifice, subtrapezoidal, cephalic mar- 
gin straight, caudal end truncate. Lingula extending nearly the 
length of orifice, spatulate, the enlarged distal portion minutely setose. 
Distal end bearing two small lobes. Two long seta' arise from ventral 
surface of distal end of lingula and project caudad out beyond the ori- 
fice. Just cephalad of vasiform orifice is a bow-shaped thickening of 
the tegument of case. 
Adult $. — Length about 0.95 mm.; fore-wing, 1.38 by 0.56 mm.; 
length of hind-tibia, 0.46 mm.; length of hind tarsus, 0.3mm. Color,, 
as given by Mr. T. Pergande, on fresh material: "The winged insects 
are covered with a white bloom; the front wings have two rather indis- 
tinct dusky spots, one a little beyond the middle and the other near 
the apex, and one near apex of posterior wings; this bloom is easily 
rubbed off, and the insect appears then to be yellow or greenish- 
yellow. The eyes are reddish-brown and the legs and antennae more 
or less dusky. The thorax is marked with blackish, and the abdomi- 
nal segments 3 to 7 have each a blackish transverse band, which 
becomes gradually broader toward the end of the body. Vertex and 
front of head blackish. Veins slightly yellowish." 
Antennae of 7 joints: Joint 1 short, subglobular; 2, about twice 
length of l,and subpy rit'orm. obliquely truncate distally; 3, long, sub- 
cylindrical, as long as joints 4, 5, and 6 together. Joints 5, 6, and 7 
subequal. Joint 4, slightly shorter than 5. Mentum with three joints, 
usual. Tibia of second pair legs two-thirds length of tibia of third 
pair, the latter about equal in length to an antenna. Operculum con- 
vex, more than twice as broad as long. Lingula protruded, rather 
swollen, cylindrical, and bluntly rounded, protruding about one and 
one-third times the length of^ operculum. 
Eyes much constricted near the middle, but hardly divided. Wings 
obscurely marked with dusky; On fore-wing an obscure spot may 
occur along main vein at its distal end, and another spot a little distad 
of middle. On hind-wing there is an obscure spot at distal end of vein. 
Jn fore-wing, basal \ einlet arising from base of wing, and apparently 
