390 On some new Brazilian Hemiptera. 
Hab. Botucaté and Campinas, State of S. Paulo. On a 
forest tree belonging to the family Myrtacee, and on culti- 
vated guava (Psidium sp.). ‘The female scales are found on 
the twigs, and on the midribs on the underside of the leaves, 
while the male scales are found scattered over the entire under 
surface of the leaves. The leaves and the scales themselves 
are usually thickly covered with a black fungus, so that it 
is nearly impossible to find well-preserved old specimens. A 
species of ant also accompanies this insect. 
Ceroplastes bicolor, sp. n. 
Adult female scale subcircular; general colour light greenish 
yellow, sides light reddish brown. Wax hard, surface 
roughened, the divisions into plates indicated by fine lines. 
Dorsum flat, greatly depressed about the dorsal nucleus, 
giving the scale a crater-like appearance. Lateral abdominal 
margins contracted, light reddish brown in colour, with two 
fine white lines on each side. Dorsal nucleus large, sub- 
quadrate, light orange in colour. The posterior edge of the 
seale is slightly notched. Size about 4 millim. in diameter. 
The individuals vary—sometimes the transverse diameter 
being the greater, sometimes the longitudinal diameter. 
Height 2-2°25 millim. 
Boiled in a solution of KOH, it gives to the liquid the 
colour of port wine. Denuded of wax, light brown in colour ; 
caudal horn very short, black. Derm neither hard nor thick. 
Outline slightly angular, dorsum convex, with no distinct 
humps; lateral margins slightly notched at the stigmatal 
areas. Length 3 millim.; height 2 millim.; width 2°5 millim. 
Antenne small, of six joints, all of which bear hairs. Length 
"210-219 millim. Length of joints in w: (1) 28, (2) 33-386, 
(3) 61-83, (4) 19-22, (5) 22-25, (6) 31-383. Approximate 
formula: 3261(54). Rostrum well developed. Rostral loop 
extending to the second pair of legs. Legs very small and 
weak. Length of joints of first pair of legs in w: coxa 63, 
femur and trochanter 84, tibia 77, tarsus and claw 63. 
Digitules of tarsus long, with ends expanded; those of the 
claw larger, of unequal size, with ends expanded. Lateral 
margin slightly notched at the spiracles; each notch bears a 
circular area of about 90 large and small blunt spines. 
Male scales small, reddish brown in colour, elliptical with 
the ends rounded, and the dorsum convex. Length 1:25 
millim.; width °60 millim. 
Adult male small, dark brown in colour; antennee and legs 
yellowish brown. ‘Total length, including genital spike, °825 
millim.; genital spike +175 millim. Extent of wings 
