12. Aleurodes erigerontis Maskell. 
Trans. N. Z. inst., 1895, p. 429. Entom. News, Vol. VII, p. 247. Onan Hrigeron, 
Escalon, Mexico. 
138. Aleurodes filicium G6ldi. 
Mittheil. Schweitz. Entom. Gesellsch., VII (1886), p. 247. See also Ent. Mo. 
Mag., 1891, p. 44. On Asplenium cuneatum and other Brazilian ferns, in the 
botanic garden at Rio de Janeiro; also on Oleandra articulata and Pteris quad- 
riolata in the fern house, Kew Gardens. 
14. Aleurodes fitchin. sp. (Plate 10E, figures 16 and 19, and Plate VII, figure 71.) 
Larva.—Size about 0.49 by 0.27 mm. ; subelliptical in shape, narrow- 
ing somewhat caudad. Color clear whitish, with irregular blotches of 
orange. Eye spots reddish. There is no marginal fringe and the lat- 
eral wax tubes seem to be wanting, though the margin is somewhat 
undulate. Dorsum void of tubercles and pores and without waxy exu- 
dation of any kind. Vasiform orifice practically as in pupa-case. On 
caudal end there is a pair of strong tubercled sete. 
Pupa-case.—Size about 0.7 by 0.43 mm.; shape elliptical. Margin 
of case whitish. There is a broad longitudinal dorsal band of dark 
brown or smoky black, which will vary somewhat in width and dis- 
tinctness, usually occurring on the entire medio-dorsal area of case. 
In extreme cases this coloration may be all but absent. There is no 
marginal fringe, though there is a narrow but well-marked rim of mar- 
ginal wax tubes. The incisions between wax tubes very shallow, and 
the tubes distally are well rounded. In immature specimens the pupa- 
case is applied quite closely to leaf; in older specimens the case is 
raised on a vertical fringe or rim of white wax, which in some cases 
may be 0.2 mm. high. Dorsum almost flat, except a slight medio- 
longitudinal rounded keel or ridge. There is a submarginal row or 
series of short, broadly conical papille all around, varying considera- 
bly in position and number. From these papille rather short, more 
or less curved, glassy, waxen rods are produced, forming a fringe all 
around. There is a subdorsal series on each side of very minute cir- 
cular transparent spots and a row on each side of keel, of depressions 
of irregular outline, but bounded cephalad, usually, by the straight mar- 
gin of the preceding segment. In this respect this species approaches 
graminicola, though the depressions are smaller. Just within caudal 
margin there is a pair of well-developed sete and a much smaller pair 
at vasiform orifice. Less usually there may be a pair of small sete on 
the first abdominal segment and on the cephalic segment. Vasiform 
orifice subovate with caudal end somewhat truncate apparently, but 
under high power is seen to have a rounded indenture, thus producing 
two rounded lobes. Operculum about one-half length of orifice, sub- 
elliptical, broader than long. Lingula about three-fourths length of 
orifice; distally it is lobed, and distal four-fifths setose. From caudal 
