38 
distinct from main vein. Genitalia forcipate; valves rather short and 
stout. Penis about four-fifths length of valves, somewhat enlarged at 
base, where it curves upward; distally it becomes abruptly narrowed 
to an acute and curved point. 
Insects received by the Division of Entomology at Washington, from 
several correspondents in California, as: Alexander Craw, Los Angeles, 
October 23, 1880, on leaves of uchsia, which, it is reported, were badly 
infested; D. W. Coquillett, Los Angeles, October 21, 1887, on Son- 
chus; A. Koebele, Alameda, during November of 1887, on Convolvu- 
lus occidentalis, A. Koebele, Alameda, November 5, 1885, on Malwa 
rotundifolia. Specimens also collected by Prof. J. H. Comstock, on 
Tris, October 20, 1880 (locality not given). Div. Ent. Nos. 750 (on 
Iris); 741 (on Fuchsia); 328 (on Convolvulus occidentalis); 4218 (on Son- 
chus), and 37 (on Malvia rotundifolia). 
Pupa-case approaches c/¢77 in color and outline, but is much more 
convex, and differs in having a vertical fringe, in the absence of the 
cephalo-lateral and caudal indentures and thickenings of the margin, 
and the vasiform orifice is widely different. It also approaches sp7- 
rae of Douglas, but differs in the absence of abdominal rows of tuber- 
cles and in the presence of sete at vasiform orifice. (Div. Ent. Nos., 
37, 828, 741, 750, and 4218.) Type of all stages 741. Immature stages 
described from numerous specimens; adult ¢, from six specimens. 
37. Aleurodes stellata Maskell. 
Trans. N. Z. Inst. 1895, p. 442. On Lignum vite, in company with A. floccosa, 
Jamaica. 
38. Aleurodes tracheifern. sp. (Plate V, figures 50-52, and Plate VIII, figure 73.) 
Pupa-case.—Size about 0.81 by 0.52 mm.; subelliptical, slightly nar- 
rowed cephalad. Color, under hand lens, rather dull black; under 
microscope, deep brownish in color, with the narrow marginal rim all 
around much lighter. There is a copious, white, somewhat cottony, 
lateral fringe, which may extend out, flat on the leaf, quite twice the 
width of pupa-case. Basally this forms a continuous fringe all around, 
but becomes separated into several lobes from about the basal third 
out. Lateral wax tubes very prominent, rounded distally; the inei- 
sions about as deep as tubes are wide and rounded at base. On the 
dorsum there may occur, along the middle line, a light mealy exuda- 
tion. There is along the dorsi-meson an evident rounded keel extend- 
ing cephalad from vasiform orifice to margin of case, but not so 
pronounced in the thoracic region, where cephalad, it becomes widened 
out suddenly into an arrow-shaped figure. Along the abdominal seg- 
ments it is semitubular, and merges caudad into an ovate rim around 
the vasiform orifice, the whole producing somewhat the appearance of 
a trachea (windpipe), with voice box (the vasiform orifice) attached. 
There is in the thoracic region on each side, a short. distance within the 
margin, a curved, depressed line, extending caudad to about the sec- 
