. The Coccidae of California; a descriptive list of the different scale insects found in and reported from California. Coccidae -- California. TllK COCCIDAE OF CALIFORNIA. 57 The spines are prominent, especially those laterad of the second and tliird lobes; the fourth spines are a little nearer the first lobes than the penultimate segment; and the fifth are near the penultimate segment; there is also a spine at or near the union of the last two segments. Scale of Male.—The scale of the male resembles that of the female in color; it is elongated, with the larval skin near the anterior end; this
. The Coccidae of California; a descriptive list of the different scale insects found in and reported from California. Coccidae -- California. TllK COCCIDAE OF CALIFORNIA. 57 The spines are prominent, especially those laterad of the second and tliird lobes; the fourth spines are a little nearer the first lobes than the penultimate segment; and the fifth are near the penultimate segment; there is also a spine at or near the union of the last two segments. Scale of Male.—The scale of the male resembles that of the female in color; it is elongated, with the larval skin near the anterior end; this skin is covered by excretion, but its position is marked by a rose- colored prominence, as in the scale of the female; the anterior part of the scale is much more convex than the posterior prolongation, which is flattened. There is a rudimentary ventral scale in the form of two narrow longitudinal plates, one on each side of the lower surface of the scale. Length, mm. On English walnut, infesting the larger limbs, usually on the under side. Aspidiotus perniciosus Comst. (San Jose Scale.) Scale of Female.—Circular, slightly convex, 1 to 2 mm. in diameter; gray or dark gray, except the prominent, covered, pale or reddish yellow exuviee. The exuviae are nipple-like, with a shal- low, depressed ring about them, which is quite char- acteristic of this species. Scale of Male.—Black in color, rather convex, with the nipple-like prominence and depressed ring still more noticeable than in the female. Female.—Two pairs of lobes well developed. Me- dian lobes prominent, rounded at the apex, notched on the outer margin near the middle, though some- what variable and converging. The thickened inner margins of the median lobes extend anteriorly, encircling the anal orifice in a characteristic man- ner. The second lobes are smaller and narrower, though distinct, quite close to the median, notched on the outer margin, pointed and converging. Be- tween the median lobes and boundin
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