DESCRIPTION.” 
Wing gless Viviparous Pemale.—Body white or cream color in alco- 
holie specimens, oval or elliptical, covered when alive by a bluish white 
cottony excretion; a few sparse short hairs. 
Head short, subtriangular, narrowly rounded in front. Antennee 
very short, scarcely surpassing the posterior angles of the head, spike- 
like in form, brown or dusky, sutures white. 1 short and thick; II 
equally thick and a little longer, being about as long as thick; diameter 
of remaining joints nearly “equal, about two thirds that of IL; ILL 
nearly one half longer than thick; LV a little shorter than thick; V 
somewhat more slender, about as long as ILL, subeonic, with a few very 
short hairs, spur minute, dark brown. No distinct sensoria visible. 
yes black, minute, near ‘posterior angles of head. 
Thoracic segments not very short, “sides of body sinuate inwardly at 
posterior angles of prothorax. A row of dark brown spots lies near the 
margin on each side of the body, one in each suture. ‘There are also four 
longitudinal rows of dark spots on the dorsum, at about equal distances 
across it, one spot on each segment, usually indistinct. ‘They appear as 
small pale brown spots, consisting of a central brown dot surrounded 
by a fine brown ring. ‘There also sometimes appears a pattern of longi- 
tudinal lines similar to that noted in Geoica squamosd, consisting of six 
lines, grouped in three pairs, the lines of each pair rather near together 
on the abdomen, and diverging on the first abdominal segment, those 
of each side uniting on the thorax into a single band, often absent. No 
trace can be seen of cornicles or tubercles. 
Beneath whitish, beak and legs brownish. Beak short, rather slen- 
der, reaching about half way between fore and middle coxe; last two 
joints about as long as basal portion. Last joint about twice as long as 
thick, tip black. Penultimate joint one half shorter and somewhat wider 
being about as long as broad. Ties short, middle and hind coxe equidis- 
tant, anterior cox about half as far apart. First tarsal joint minute, 
but present; claws two, minute on posterior legs. Venter of abdomen 
marked with a row of indistinct transverse brown spots in the sutures, 
and often with longitudinal darker lines, a pair each side of the median 
line, and another line exterior to these. Spiracles distinct, in minute 
blackish rings. Anterior spiracle slightly elevated. Anal plate ventral, 
not elevated, eighth dorsal segment visible behind it from below; anal 
and genital apertures transverse, brownish. 
Length 1.8 mm., breadth .7 mm., antenna .12 mm. The young are 
broader, with proportionally longer legs. 
Described from six lots of specimens. 
The Chermesine are doubtless the lowest plant lice and most nearly 
related to the Coecide. The affinities of Rhizobius seem to be in this 
direction, and it is also closely related to the other Rhizobiine, most 
of which would probably prove to be Pemphigine if the winged forms 
were known. It would therefore seem a more natural arrangement to 
place the Rhizobiine above instead of below the Chermesine, as it now 
stands, bringing it next to the Pemphigine. 
