21 
A. (Hemiberlesia) cydoniae Comst. — 9 scale like that of rapax. $ with four groups of 
ventral glands, differing from con vex us in having only two pairs of interlobular 
incisions, and the plates more prominent. On quince in Florida. Maskell 
reports it on Citrus from Samoa, and Green on fig, Citrus, etc., at Punduloya, 
Ceylon. Dr. Howard informs me that it has never been received at the Depart- 
ment of Agriculture since 1880, so it must be rare in America. 
A. (Diaspidiotus) forbesi Johns. — 9 scale much like that of A. anci/lus. 9 yellowish, 
with two pairs of lobes; 5 groups of ventral glands. On cherry, apple, pear, 
plum, quince, currant, and perhaps other trees. Illinois, and Mesilla, N. Mex. 
A. (Diaspidiotus) howardi Ckll. — 9 8ca l e flat* circular, pale grayish; exuviie covered, 
dull orange. 9 very 
similar to that of A. an- 
cylus, but two pairs of 
lobes. On plum, Canyon 
City, Colo. ; Albuquer- 
que, N. Mex. 
A. (Diaspidiotus) juglans-regiae 
Comst. — 9 scale circu- 
lar, flat, grayish-brown, 
exuviae covered; diam. 
of scale, 3 mm. 9 with Div.Cnh Hq7* 
two or three pairs of OM Bi^tioW*.. 
lobes; grouped glands As|a;d;oW> 4n*3tl©v{<a. cyj. 
present. On English Fig. 12. — Aspidiotus bigelovice (original). 
walnut in California; 
on locust, pear, and cherry in New York and District of Columbia, 
var. pruni Ckll. — 9 with the oval pores more numerous, the fourth or external 
row of about 20. On plum, Las duces, N. Mex. 
var. albus Ckll.— 9 scale white; exuvhe orange-red, covered by white secretion. 
Mesilla Valley and Las Vegas, N. Mex. 
A. (Pseudodiaspis n. subg.) larreae Ckll., n. sp. (Fig. 13.) — 9 scales abundant on a stem 
of Larrea tridentata; scale about 
^--""■\/"-x. 2 mm. diam., flat, irregular, round 
w-^l [ r ' n i \ i \ i \ , to suboval , dull white w i th a slightly 
, / \\ \Y A creamy tint; exuviae not visible in 
J ) \j \ C// \ the mature scale, but in younger 
/' II scales the elongate-oval, pale straw- 
colored first skin is exposed, sub- 
lateral or even quite lateral. 9 cir- 
,,fT( cular, not chitinous; only one pair 
/ Ar.-tovva.. of lobes; these broad and low, close 
A. \a/rr£*i.Ck\i together but not touching; no 
(s.4."Pst«fcofci«*^a.} plates; no groups of ventral glauds. 
Fio. 13.— Aspidiotus larrca> (original). The 9 '« contain embryos, which even 
after boiling remain sepia brown. 
A dried 9 is oval, orange, with prominences on the margin. $ scale small, 
elongate, mytiliform, white, with the elongate first skin projecting at the small 
end, like a Mytilispis. Yuma, Ariz. (Div. Ent., 7502, coll. by H. G. Hubbard). 
This carious species is for the present left in Aspidiotus, because it seems to 
have points in common with the Indian A. nioorei, Green. Pseudodiaspis will, 
however, no doubt eventually be regarded as a distinct genus, on account of 
the mytiliform $ scale and other characters. 
A. (Metanaspis) obscarus Comst. — 9 scale very dark gray, only slightly convex; exuviae 
sublateral, covered; diameter of scale 3 mm.; $ scale oval. 9 with three 
pairs of well-developed lobes; 5 groups of ventral glands. On willow-oak at 
Washington, D. C. 
A 
