GENERA OF COCCID^. 
93 
quiescent and form the scaly covering, but are capable of moving 
freely about on their food-j)lant, entirely unprotected, oi- then only 
covered with a filamentous, floccnlent or pulverulent substance, 
whilst a few species have been discovered in Australia living in galls 
or excrescences, on the leaves of the Eucalyptus tree. I also know 
of a gall-rnaking species in Florida. 
ihe family may be divided conveniently into five subfamilies, 
apparently natural groups, based upon the studies of Signoret, Tar- 
gione, Low, Masked, Comstock, Atkinson and others, recognizable 
by the aid of the following table ; 
Table of Subfamilies. 
Species not livinji in tubes or galls, naked, or covered with a waxy, calcareous, 
or cottony secretion. 
Lower lip 2- or 3-jointed ; anal extremity not, or but slightly cleft, tubercular . 
no lobes or plates. ’ 
Adult 9 with 10-11-joiuted antenufe; "J, with 10-jointed anteniife; eyes 
facetted ; ocelli absent; abdomen never terminating iu two long caudal 
filaments Subfamily I.--MONOPHLEBIN.E. 
Adult 9 with 8-9-jointed auteunte; with 10-jointed antennae; ocelli 
present; eyes usually smooth ; abdomen always with two long caudal 
filaments Subfamily II.— COGGING. 
Lower lip 1-jointed ; anal extremity distinctly cleft, or tubercular. 
Anal extremity cleft with two triangular lobes or plates above; adult 
with 9-10-jointed antennae; abdomen terminating in a long caudal 
stylus and two long caudal filaments Subfamily III. — LEGANIIN^, 
Anal extremity not, or but slightly cleft, strongly tuberculous, no plates 
above; with 10-jointed antennte ; abdomen terminating in a caudal 
stylus, but the caudal filaments absent Subfamily IV. — DIASPIN.®. 
Species living iu tubes or galls, apodous, or with atrophied legs. 
Subfamily V.— BRAGHYSGELIN^. 
Subfamily I. — Monophlebina;. 
Table of Genera. 
Females. 
Antennae in adult 11-joiuted o 
Antennae in adult 10-jointed, second and tenth joints of equal length and longest ; 
body normally covered with numerous yellow hairs mingled with 
a white calcareous, lamellar secretion; skin with rows of spin- 
nerets; claws stout, with a hair on each face; tarsi one-third as 
long as tibiae, the latter longer than the femora; at the anal ex- 
tremity of the abdomen, before the margin, the genital ring is 
surrounded by a ma.ss of hairs G. 1. Walkeria.na Signoret. 
2. — With a rostrum ^ 
Without a rostrum. 
Anal tubercles wanting or obsolete ; claws with numerous knobbed digitules. 
G. 2. <loeloKtoiiia Maskell. 
Anal tubercles present G. 3. 1‘orphyropliora Brandt. 
