52 THE SAX JOSE OK CHINESE SCALE. 
brane, and the forming embryo showing- through gives it a yellowish - 
white color. The embryo with the envelop measures about 0.2 mm long 
by o.i"" u wide. 
Newly hatched larva. — The young larvae of both sexes are alike, and 
are pale orange in color, with long oval bodies. They measure in length 
about 0.24 mm by o.l ,nm in width. The sucking bristles are normally 
doubled on themselves, but when unfolded are nearly three times the 
length of the body. The antennae are apparently five-jointed, the last 
two joints being much longer than the others, slender, subequal in 
length, and both finely and distinctly annulated. The last joint bears 
a small nipple-like projection near the tip. The head is somewhat con- 
cave in front, and the eyes are nearly transparent and slightly purplish. 
The terminal segment of the abdomen foreshadows in structure the 
plates and spines of the adult female. The large central plates each 
terminate in a long hair. The tarsus is represented by apparently a 
single, strong, slightly curved claw. The tip of the tibia bears exteri- 
orly two rather long capitate hairs, and two similar hairs project also 
from the inner extremity. Other details of structure are shown in the 
illustration. 
Larva of the second stage. — After the first molt the difference in the 
sexes becomes apparent, altho the covering scales are still identical. 
The female insects are somewhat smallerthan the males at this stage. 
The eyes. legs, and antenna? in this sex have entirely disappeared. The 
form is almost circular, flattened. The color is yellow, with irregular 
transparent spots appearing in different parts of the body. 
The males are somewhat larger than the females, elongate, pyriform. 
The eyes are prominent, purple in color. The legs and antennae, as 
with the females, are wanting. The general color of the body is 
yellow, with the irregular transparent spots noted in the ease of the 
female. The greatest diameter in both sexes is less than one-half a 
millimeter, and in the characteristics of the terminal segment both 
agree, practically, with the adult female. 
Male pro-pupa. — With the second molt the male assumes a form 
foreshadowing the true pupa, which may be called the pro-pupa." 
The form is elongate oval: length 0.5 mm . The color is very pale 
yellow, with the antennae, limbs, and wingpads. and two or three ter- 
minal segments of the abdomen, colorless. The legs and antenna', as 
noted, have reappeared, and also prominent pads foreshadowing the 
wing- of the adult. The eyes are dark purple and placed close together. 
The antenna- are yovy stout, and curved closely around the edge of 
the body a- far as the anterior legs, where they bend inward. The 
a The existence of a pro-pupa or a firsl pupal stage in the Coccidne analogoi 
the first piipal stage of higher Hemiptera lias also beeD affirmed by Dr. l'r. Loew. 
Wiener Entom. Zeit., .Ian., L884, \>. L3.) 
