No. 389.] THE COCCID GENUS MARGARODES. 417 
5 mm., of wing about 314 mm. Body purplish brown, eyes and anterior 
part of prothorax crimson ; mesothorax shining dark brown; abdomen 
with a median longitudinal series of transversely lengthened dark brown or 
blackish marks ; wings ample, clear, iridescent, with a large pinkish pseudo- 
stigma. Eyes very strongly faceted. Abdominal brushes two, arising 
from the 7th and 8th dorsal segments, each consisting of many white 
threads, as in Orthezia. Antennz brown, 10-segmented, the segments 
sausage-shaped, except the first two, which are short and broad ; each 
segment with spreading hairs, which, however, are not as long as the seg- 
ment. The wings have no veins except the costal, but there are three 
folds ; two parallel and close together, obliquely crossing the middle of the 
wing to the lower margin ; and one in the place of the anal vein. Anterior 
legs fossorial, the femora greatly swollen, like the hind femora of Haltica ; 
tibia and tarsus (the latter short) transformed into a digging claw; middle 
and hind legs ordinary, except that the hind femora are rather swollen, and 
the tarsi are all extremely short, hardly one-fourth the length of the long 
tibia. Claws sharp and long; no digitules. 
Hab. — Mesilla Park, New Mexico, Jan. 16,1899. The immature forms 
remain to be discovered ; they will certainly be found on the roots of some 
shrub ; most probably on those of Atriplex canescens, which abounds on 
the college campus; possibly on those of Prosopis glandulosa. 
MESILLA PARK, NEW MEXICO, 
January, 1899. 
