Apliididae of Formosa. — 3. 61 



arising from very small tubercles. Head provided witli 10 Lairs distributed as in 

 the 1st and 2nd instars. Eyes with small ocular tubercles. Frontal tubercles as 

 in the younger nymph. Antennae G-jointed, provided with many minute spinules 

 on the 4tli and the following joints; the 1st and 2ud joints each provided with a 

 very long slightly kmibbed hair which is longer than the 1st autcnnal joint, but 

 shorter than those on the head, arising from a very small tubercle; the 3rd much 

 shorter than the front tibia, provided with 2 very long and 2 moderately long 

 slightly knobbed stout hairs arising fi-om very small tubercles arranged in a row; 

 the 4th and 5th provided with a few moderately long to rather short bristles, the 

 sensorium subcircular and of medium size; the 6th provided with a moderately long 

 bristle far below the sensorium; the relative length of joints as follows: III-51, 

 IV-40, V-41, VI-55 (25+30). Rostrum not reaching the middle coxae. Protho- 

 rax provided with 6 very long hairs distributed as in the 1st and 2nd instars on 

 the pronotum and a very small blunt lateral tubercle near the hind margin. Meso- 

 thorax somewhat protruding on the sides, provided with 8 long hairs arranged in 

 two transverse rows on the middle of the dorsum and a similar one near either side. 

 Mctathorox slightly protruding on the sides, with 4 long hairs on the middle of the 

 dorsum and two similar ones near either side, these hairs arranged iu a transverse 

 i"ow like those on the abdominal segments. The 1st abdominal segment provided 

 with 8 hairs as on the mctauotum; the 2ud, 3rd and 4th each with 10, the 5th and 

 6th each with 4 at the middle and one near either side, and the 7th and 8th each 

 with about G hairs; cert^iin of these hairs sometimes much shorter. Cornicles and 

 Cauda almost as in the 2nd instar, much shorter than the hairs on the body. Legs 

 stout, provided with moderate to very long normal bristles which arc shorter than 

 the hairs on the abdomen. 



Length of body-about 1.5 mm. Autenna-1.0 mm. 



Differs from the 2nd instar in the following characters: 



Antennae 6-jointcd. The 3rd antenual joint shorter than the front til)ia, 

 provided with more numerous long stout hairs. Eyes with very small ocular tuber- 

 cles. Prothorax provided with a very small lateral tubercle. Wing-pads begin- 

 ning to appear. Rostrum not reaching the middle coxae. Mesonotum and abdo- 

 men provided with more hairs. 



(The fourth instar) Colour almost as in the third instar, sometimes dark 

 brownish purple on the middle of the meso-and metanota and with a pair of longitu- 

 dinal dark brownish purplish patches, which are sometimes interrupteii, on the 



