.\|ilii.lM:M-..rF.irninsa.— n. 2?, 



(Tiio •^>r(l iiistar) Dift'urs from tlip scfoiid iiistar as tbllnw?: 



Frontal tnlicrclcs moderatply dovclopofl, vprv slightly fouvex ou thn inner 

 sido. Antt'iiiKiL' Inngcr, C "ointcd; tlie ;ir(l "oint not imbricatccl; the relative length 

 of joints as f .ll,,xvs: III-64, IV 57, V o5, VI lo.'^ (20+13^). Wing inds begin- 

 ning to apjicar. Cornidcs longer, a little more than twiee as long as tlie eiinda. 

 Cauda almost as long ns ^^•ide, provided with ahont 5 pairs of bristles, of MJiich one 

 pair is much longer. 



Length of body about 2.0 nun. Antenna about i.f^ mm. 

 C'oruiele about 0.5 mm. 



(The 4th instar) Differs irom the third inslar as follows: 



(Wingless form) b^rontal tulienb'S larger. Antennae longer; i.lie relative 

 length of joints as follows: Ill-lSfi, IV-95, V 80, VM97 (30+167). Cornieles 

 very l"ng, almost twice as long as the otii antennal joint, almost 5 times as long as 

 Avide. Cauda more slender, longer tlian wide, provided with many very long 

 lateral bristles. 



Lensth of IhkIv about 2.3 mm. Antenna about 2.35 mm. 

 Cornielc-about 0.65 mm. 



Tiie tullv grown nymph differs from the wingless adult in tin- following 

 eliaraeters: 



The 3rd antennil 'oint laeks sensoria. Cornieles not reticulati'd and not 

 prominently imbricited. (/auda shorter. 



(\\'inged form) I'^rontal tubercles larg.>r. Antennae longer; the relative 

 kngth of joints as follows: 111 137, TV 100, V-8 ), VI-210 (30+180). f"orni.-les 

 vcrv long, almost twice as long as tiie 5tli antennal joint, about 5 times a^' long as 

 wide, about 2.5 times as long us the cauda. 



Cauda about 1.3 tinies as long as wide, [irovided with many very long 

 bristles. "Wing jiads well develiped. 



Length of liody-al out 2.4 mm. Anteun;x-ab(uit 2.8 mm. 

 Corniclc-al out 0.8 nun. 



The l)ody is blinlc and tiie bises of femora and the basal halves of tibiae are 

 somewhat brownish in the grown nymphs (the third and fourth instars): in the 

 fully-grown nymph ot the winged form the uusothorax is blaekisli green, with the 

 wing-pads bl uk. 



These descriptions wer(> made from the specimens collected on Cirximn 

 jiipiiiiictdii in January and February, 1923, at Taihoku. A tew wingless viviparous 



