40 



So far as I know the species has never been collected since Mr. 

 Alexander Craw took it on the bark of Wistaria arriving at San Fran- 

 cisco from Japan in July 1897. These were the specimens from 

 which the species was originally described. 



CHIONASPIS CARYAE. 



Chionaspis caryae Cooley, Can. Ent., Vol. XXX., p. 86 (1898). 

 Chionaspis caryae Berlese, Riv. di Pat. Veg., Vol. VI., p. 379 (1898). 



SCALE OF FEMALE. Plate 2, Fig. 3. Length, 1.7 2. mm. 

 Irregular in form, thick in texture, dirty white in color ; inconspicu- 

 ous on the bark of the host-plant. Exuviae .7 mm. long, dark 

 brown. The first exuvia readily distinguishable, the second almost 

 hidden from view by the copious secretion which covers it. 



FEMALE. Plate 8, Fig. 5. Median lobes large, distinct, entire ; 

 with the inner edges fused to near the ends of the lobes. Often with 

 a club-shaped chitinous process extending anteriorly from them on 

 the median line. Second and third pairs more or less serrate ; inner 

 lobule larger than the outer. Outer lobule of the third lobe often 

 nearly obsolete. The gland-spines are arranged as follows : i, i, i, 

 1-2, 5-7. The first one is short and blunt. Second row of dorsal 

 gland-orifices represented only by the anterior group consisting of 

 i 4 orifices. Third row with 4 5 orifices in the anterior and 3 5 

 in the posterior group. Fourth row with 4 6 orifices in the anterior 

 and 4 5 in the posterior group. Median group of circumgenital 

 gland-orifices, 12 19, anterior laterals, 21 29; posterior laterals, 



15 22. 



SCALE OF MALE. Plate 2, Fig. 3 A. Length, .5 .7 mm. Ellip- 

 tical in outline with a very distinct median carina. Exuvia pale 

 brown, occupying about one-third of the length of the scale. 



REMARKS. 



This species has no near relatives so far as is known, the only 

 insect resembling it being C. americana, which also has the inner 

 edges of the median lobes fused together. The two species can be 

 readily distinguished by the lobes, in C, americana being distinctly 



