20 
though it is made out with difficulty. On ventral surface, rudimentary 
feet quite distinct. 
Adults unknown. 
Received by the Division of Entomology at Washington from Dr. 
Vasey, of the Department of Agriculture, specimens on leaves of 
Acacia (mesquite) from Chilhua, Mexico, January 27, 1886; from 
W. E. Collins, Ontario, Cal., on Acacia, October 6, 1889; again on 
Acacia from Los Angeles, Cal., and on LBensera microphylla, Carmen 
Isle, off Lower California. This same species, it is stated in Mr. 
Pergande’s notes, was found on leaves of mesquite from Bastophilus, 
Mexico; Div. Ent. No. 3863. No. 5876 is doubtless this same species, 
from Fullerton, Cal., July 30, 1893, on an undetermined plant. Type 
3863, from Chilhua, Mexico. Described from numerous pupa-cases. 
4. Aleurodes aépim Goldi. 
Mittheil. Schweitz. entom. Gesellsch., VII, 1886, p. 250. 
On ‘‘Aépim’”’ (‘f Mandioca doce’’) Rio de Janeiro. 
5. Aleurodes altissima n. sp. (Plate I, figures 8-12, and Plate VII, figure 70.) 
Larva.—Size about 0.89 by 0.52 mm.; yellowish white. A series 
all around of about 30 sete. On dorsum are 5 pairs of moderately 
developed sete, a pair on cephalic segment, a pair on each of the 
thoracic segments, and a pair at vasiform orifice. Margin of case 
slightly crenulated. On the dorsum a few pores may occur somewhat 
promiscuously, and there are a few groups of pores around the mar- 
gin. This stage in many respects approaches quite close in structure 
to the pupa-case. 
Pupa-case.—Size about 1.79 by 1.26 mm.; subovate, narrowed ceph- 
alad. Color of younger pup, yellowish to white, and usually with- 
out other coloration. In more mature examples the color may vary 
from whitish to those more or less mottled with brownish, with 
extreme cases almost uniform brownish black, though in these latter 
cases such examples have plainly been parasitized, and this color may 
have resulted from this fact. Typically, this brownish coloration 
occurs in dashes, from the outer margin inward, varying distances, 
and more or less radially. Along the dorsi-meson there is a more or 
less clear longitudinal central stripe, with an interrupted stripe of 
dark brown on each side, these latter varying considerably in extent 
and distinctness. In well-marked specimens the radial wedge-shaped 
dashes may extend quite into these subdorsal bands of dark brown. 
Pupa-case, when young, with moderately rounded keel, otherwise 
flat; at length becoming somewhat convex, and raised on an unusually 
high vertical fringe of white wax. There is no lateral fringe, but 
just within the margin all around there is a series of groups of waxen 
rods. These rods arise from groups of from usually 22 to 26 circular 
pores. Each bundle of rods is surrounded with a rather short cylin- 
