Jan. 15,1925 
Scale Insects of the Subfamily Ortheziinae 
151 
collected by H. S. Barber, August 8, 
1917 (holotype and paratypes); from 
the same locality, collected by H. S. 
Barber and Harold Morrison, June 15, 
1922 (paratypes); and from Grimsby, 
Ontario, Canada, collected by Horn 
(paratype). 
The types are in the United States 
National Collection of Coccidae. 
NEWSTEADIA FLOCCOSA (DE GEER) 
Reference. —De Geer, 1778, Mem. 
Hist. Inst. 7: 604-605. 
This species has been included in the 
key and the generic discussion on the 
basis of an examination of specimens of 
the adult female from England, New- 
stead coll., and from Loch Katrina, 
Scotland, among moss (Musci), coll. 
T. D. A. Cockerell, June 17, 1921. 
Published records include, in addition 
to the general localities given above, 
Australia (presumably accidentally in¬ 
troduced), Bohemia, France, Germany, 
and Sweden. The reported hosts are 
Cyperaceae, Glecoma (Labiatae), 
Gramineae, Helianthemum (Cistaceae), 
Luzula (Juncaceae), mosses (Musci), 
Sphagnum (Musci). 
NEWSTEADIA TRISTANI (SILVESTRl) 
Reference. —Silvestri, 1924, Bol. 
R. Soc. Espanola Hist. Nat. 24: 174- 
176, figs, vii-ix (as Ortheziola). 
Thanks to the numerous figures and 
extended description given by Doctor 
Silverstri, it is possible to reassign this 
form as the immature stage of some 
species of the genus Newsteadia. The 
external appearance, the number of 
abdominal spiracles, and the details of 
the body structure harmonize closely 
with the generic characters with the 
single exception of the number of an¬ 
tennal segments, and here it seems 
possible that the method of treatment 
for microscopic study may have in¬ 
fluenced the appearance of the an¬ 
tennae, and that they actually have a 
greater number of segments than the 
three shown. The ventral ovisac band 
of the adult female is so striking a 
characteristic in all of the species in 
the subfamily that are positively 
known in this stage that it is hardly 
conceivable that the form described by 
Doctor Silvestri can be anything other 
than the preadult stage of some mem¬ 
ber of the genus. Certainly it can not 
be associated properly with either 
Ortheziola or Nipponorthezia. 
No examples of this species have been 
available for study. It was described 
from San Jose, Costa Rica, where it 
was found in the ground in disinte¬ 
grated vegetation. 
GENUS MIXORTHEZIA, NEW GENUS 
Adult female normally with plates of 
secretion in general resembling those of 
other genera, and with ovisac at ma¬ 
turity; body oval; antennae 4-seg- 
mented, the 2 terminal forming an 
elongate club; eyestalk small, irregu¬ 
larly conical, not fused to basal an¬ 
tennal segment; legs with tibia and 
tarsus fused in addition to coxa and 
trochanter, claw without denticles; 
beak elongate, 1-segmented; thoracic 
spiracles not unusual, abdominal oc¬ 
curring in 8 pairs as in Orthezia; derm 
pores quadrilocular, in 2 sizes, the larger 
often grouped in clusters of 2 to 5, the 
smaller at ends of tubular ducts; derm 
spines in bands and clusters as in 
other genera, but with the apices of 
each slightly enlarged and truncate; 
body setae relatively large and numer¬ 
ous; anal ring normal, with pores and 
6 subequal setae; with a narrow, irregu¬ 
lar, transverse thickening anterior to 
the anal ring dorsally. 
Type of genus: Mixorthezia cubana , 
new species. 
MIXORTHEZIA CUBANA, NEW SPECIES 
Fig. 41 
Adult female. —All specimens alco¬ 
holic and the secretionary covering in 
consequence largely destroyed, but 
evidently consisting of flattened white 
wax plates corresponding in number 
and position to the clusters of spines 
and in general closely resembling those 
of other genera; ovisac probably shorter 
than the body; as mounted, oval, 
length 1.4 millimeters, width 0.9 milli¬ 
meter; derm without chitinization ex¬ 
cept for a narrow transverse thicken¬ 
ing, nearly obsolete across the middle 
line, just anterior to the anal ring; 
antennae normally 4-segmented, the 
first large, the second small, the last 
two forming a rather evident elongate 
club, apical spine long and relatively 
slender; eyestalk small, irregularly 
conical; legs not unusual, trochanter 
and femur completely fused, tibia and 
tarsus fused, but apparently with a 
division line indicated near the base of 
the combined part, claw long and 
slender, without denticles, tarsal dig- 
itules not differentiated from the 
spinelike setae present in rows on the 
part, claw digitules small, spinelike; 
beak well developed, length about 165 
microns, width about 97 microns, 
1-segmented; with the usual 2 pairs of 
thoracic spiracles, without spine collar 
around opening; with 8 pairs of short 
tubular, abdominal spiracles, the pos¬ 
terior pair on each side grouped as in 
