380 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [BulL 



eight times longer than broad, sides parallel, straight or curved, 

 shining black, margins grayish ; exuviae terminal, black. 



Female: Median lobes rounded or finely crenulate, situated 

 within a broad shallow emargination. There are three groups of 

 circumgenital gland-orifices with numbers as follows : median, 3 ; 

 laterals, 4-6. The dorsal area of the pygidium is nearly covered 

 with the lattice-like thickening of the dermis. 



Scale of male: Length 1 mm., elongate; in color, form and 

 exuviae resembles the anterior portion of the female scale. 



On various species of palm and other kinds of plants in the 

 greenhouse. 



New Haven, 15 Jan., 1904 (W. E. B.). 



Parlatoria Targioni-Tozzetti. 



Pygidium of female with margin evenly and deeply crenulate, 

 the three pairs of lobes being nearly uniform in size and shape ; 

 each lobe is evenly and deeply notched on outer and inner margin, 

 giving it almost a trilobed appearance. There are four groups of 

 circumgenital gland-orifices. Male scale not carinated, long and 

 narrow. 



Key to Species. 



1. Female scale greenish yellow, gray, or pale brown 2 



Female scale black ; cephalic segment with large tubercle ; fourth 



lobes distinct zizyphi 



2. Female scale approximately circular; fourth rudimentary lobes 



present pergandii 



Female scale elongated, pale greenish yellow ; fourth rudimentary 



lobes absent proteus 



Female scale elongated, orange-yellow; exuviae yellow with blotch 



of bluish green crotonis 



P. crotonis Douglas, proteus var. crotonis. pergandii var. 

 crotonis. 



Ent. Mon. Mag., xxiii, 242, 1887. 



Scale of female: Length 1.5-2 mm., elongate ovate, or pyri- 

 form, flat convex; orange-yellow with green tinge; exuviae 

 marginal, yellow with a posterior blotch of dark bluish green. 



Female : Four groups of circumgenital gland-orifices with 

 anterior lateral, 5-6; posterior lateral, 4-5. 



Scale of male: Elongated, purplish brown, exuviae with dark 

 bluish green central area, margin yellow. 



On Croton wherever this plant is grown. Has been recorded 

 from Massachusetts in greenhouses. 

 P. pergandii Comstock. ChafI scale. 



Rept. U. S. Dept. Agr., 327, 1880. 



Scale of female: Diameter 1. 2-1. 75 mm., gray or dirty white 

 tinged with pale brown, semi-transparent. Nearly circular with 



