39 
ond abdominal segment. Abdominal segments distinct, extending out 
to marginal rim, and strongly reflexed caudad. 
Dorsum with four pairs of well-developed sete; a pair on cephalic 
region; a pair on metathorax; a pair at vasiform orifice, a seta on each 
side, and a pair on the caudal end of the large, thickened, subovate 
rim, surrounding the vasiform orifice. There isa pair of minute white 
sete on the cephalic margin of case, and the usual caudo-lateral pair 
is present. Vasiform orifice semicircular, as broad as long; cephalic 
margin almost straight. Operculum subsemicircular, but broader 
than long, minutely setose distally. Lingula moderately developed, 
reaching caudal margin of operculum; enlarged distally and minutely 
setose. The operculum and lingula are made out with difficulty. 
Adults.—Unknown. 
Sent to the Division of Entomology at Washington, June 2, 1897, 
on *‘EKscabillo,” collected at Las Minas, Tobasco, Mexico, by Mr. 
C. H. T. Townsend; Div. Ent. No. 7817. Described from 6 specimens. 
39. Aleurodes vaporariorum Westwood. 
Gard. Chron., 1856, p. 852; Signoret, Ann. de la Soe. Ent. de France, Dec., 1867, 
p- 387; W. E. Britton, Ninth Ann. Rept. Conn. Agr. Expt. Sta., 1895, Pt. II, 
ps 2038. 
A species widely distributed in Europe, and has been recorded on 
Gonolobus, Tecoma, Bignonia, Aphelandra, Solanum, Tomato, Salvia 
splendens, and Lantana Conmara. Specimens have been received by 
the Division of Entomology, United States Department of Agriculture, 
of what appears to be this species, from the following localities in the 
United States: Freehold, N. J.,on /uchsia,; Fairburg, Ill.,on /uchsia; 
Boston, Mass., on /uchsia, Pelargonium, and other plants; New Haven, 
Conn., on Tomato; Storrs, Conn., on house plant; West Grove, Pa., 
on Oxalis, and what is probably the same species, from Goshen, Ind. 
These insects, to a considerable extent, occur on greenhouse plants, 
which fact probably has a bearing on their present distribution. 
Div. Ent. Nos. 1192, 2194, 2294, 4354, 4590, 4895, and 6755. 
40. Aleurodes variabilis n. sp. (Plate V, figures 53-55.) 
ligg.—Length, exclusive of stalk, 0.2 mm.; width one-fifteenth mm. ; 
shape oblong, tapering toward apical end, which is bluntly rounded, 
and about one-half the width of egg at widest part; unmarked; color 
whitish when fresh; with advanced embryo, yellowish. Stalk about 
one-sixth length of ege@, attached to center at base, bearing several 
short irregular prongs. 
Larva.—-Length, 0.5 mm.; width, 0.8 mm.; regularly elliptical in 
outline, flat. Color, uniformly light yellowish. Wax tubes, seen from 
above, rounded distally. No marginal fringe. Abdominal segments 
moderately distinct; thoracic, less so. No pores or papille, as in pupa- 
case. There is a pair of well-developed, brownish-colored sete aris- 
ing from caudal margin, and extending dorso-caudad, as in pupa-case; 
