112 
Journal oj Agricultural Research 
Vol. XXX, No. 2 
and absence of the lateral cliitinized 
wings. 
This species has been redescribed 
from the following material: Las Cru¬ 
ces, N. Mex., on Atriplex canescens 
(Chenopodiaceae), coll. T. D. A. Cock¬ 
erell (type); and Arizona on Cheno- 
podium (Chenopodiaceae),coll. C. H. T. 
Townsend. 
the species precisely among those in¬ 
cluded in the key. 
ORTHEZIA ARTEMISIAE COCKERELL 
Figs. 3, B; 5, B; and 9; PI. 1, B 
Reference. —Cockerell. 1898, Canad. 
Ent. 30: 19-20. 
Only a single badly mutilated 
adult female and a few im¬ 
mature specimens of this 
species have been available 
for examination from the 
type material, and from these 
it has not been possible to place 
it with certainty. Professor 
Essig has very kindly supplied 
specimens which he has col¬ 
lected at Santa Paula, Calif., 
on Artemisia californica (Com- 
positae) which appear, so far 
as comparison is possible, to 
be identical with the type, and 
the species has been included 
in the key and figured mostly 
on the basis of a study of 
Professor Essig’s specimens. 
An extended redescription as 
well as the precise placing of 
the species within the genus 
must be deferred until satis¬ 
factory topotype material can 
be obtained. The species was 
originally described from Em- 
budo, N. Mex., on Artemisia 
(Compositae), collected by T. 
D. A. Cockerell, October, 1897. 
ORTHEZIA BALLOUI, NEW 
SPECIES 
Figs. 3, C; 5, C; 7, B; and 10; PI. 1, C 
Adult female. —Approxi- 
Fig. 6 .—Orthezia spp., outlines of average body spines (letter mate length of body with all 
designations as in fig. 5), all X 720: A, mexhana; B, minor; secretion, including posterior 
C, monticola; D, nigrocincta; E , nuda; F, olivacea; G, prae- -hif+c: 1 A millirnp+prs- 
longa; H, solidaginis; I, sonorensis; J, tillandsiae; K, varipes; m . ar g inai rmrs, 1.0 mimmeiers, 
L, ultima; M, urticae; N, cataphracta; O, occidentalis width 1 millimeter; total length 
of well-developed female with 
ORTHEZIA ARENARIAE VAYSSI^RE 
Reference. —Vayssidre, 1924, Bui. 
Soc. Ent. France No. 2: 28-29, fig. 1. 
This species, described since the 
completion of the present paper, as 
characterized by the author, is 
evidently very closely related to O. 
urticae (L.). It was collected on the 
Djebel Tachdirt, Morocco, on Aren- 
aria pungens (Caryophyllaceae). No 
specimens have been available for 
comparative study, and it has conse¬ 
quently not been possible to place 
ovisac 4.4 millimeters; body, except 
for a tiny quadrate bare spot, com¬ 
pletely covered dorsally and ventrally 
with tufts of secretion, these more or 
less distinctly arranged in the usual 
marginal and lateral tufts; posterior 
marginal tufts of secretion very long, 
sometimes nearly as long as the body; 
average length of body as mounted 1.2 
millimeters, width 1 millimeter, very 
broad oval, posterior apex somewhat 
flattened, anterior very slightly nar¬ 
rowed; derm membranous, except for 
4 pairs of prominent, rectangular, 
