43 
smaller scale, as well as in its more amygdali-like lobes. Chionaspis 
pninieola Mask., which its author scarcely knew whether to put in Chio- 
naspis or Diaspis 1 is another similar form. It has not^kowever, the tri- 
carinate male scale of difficilis. 
Aspidiotus albopimctatus n. sp. 
Male scale. — Very small, hardly over one half mm. broad, circular, 
becoming at length elongate by the production of one side, and then 
over 1 mm. long. Slightly convex, dull black, inclining to grayish; 
exuviae marked by a white dot surrounded by a black ring. Eemoved 
from the bark, the scale leaves a white patch without any dark ring. 
Female scale. — Circular, flat, extremely inconspicuous, dull paleochre- 
ous, more or less blackish; on examining the scale from beneath, it is 
seen that the exuviae are large and orange. Probably the few female 
scales seen are not quite adult. Their 
diameter is about 1 mm. 
Adult female. — Pale yellow, of or- 
dinary circular shape; pygidial area 
striated, no groups of ventral glands. 
Two pairs of lobes only; median lobes 
large, close together but not touching, 
rounded, notched on the outer side and F,fi - *— tspidiotw aWopwiuoatus (from 
,. t i ii ,1 • drawing by Cockerell). 
sometimes slightly on the inner; sec- 
ond lobes much smaller, strongly notched on the outer side. Plates 
spine-like, not very large. Beyond the^obes the margin appears to 
present three or four irregular serrations, which in well-developed 
specimens take the form of double spine-like plates. There are two 
pairs of sac-like incisions, as mperniciosiis. 
Habitat. — Japan, on twigs of orange seedlings, found by Mr. Craw in 
his quarantine work. 
This might easily be considered a form of A. p&rmciosus, which, how- 
ever, does not seem to affect citrus trees, and is not found on the 
plums, peaches, etc., from Japan. The characters are almost exactly 
those of pernieiosus, but the male scales of the latter have the exuvia* 
more or less yellowish. The relationship between the two is quite as 
close as that between Mytilaspis pomorum and citrieola, and I confess 
that it would not have occurred to me to separate albopunetatus as a 
distinct species but for its habits and locality. It is, in fact, what I 
have called a " physiological species." 
Parlatoria these var. viridis n. var. 
Female scale.— About li mm. long, nearly circular, but the exuvia* 
projecting at one side give it a broad pyriform outline. From one- third 
to two thirds of the first skin overlaps the second. First skin dark 
greenish to greenish black. Second skin about twice as long as first, 
nearly round, dark greenish to black, with sometimes a narrow brown 
