Antennae lono'cr; tho "vd joint provided witli soiae moderate or rather long stout 

 bristles; the 4th sliglitly imbricated <m tlie distil part, provided with some bristles; 

 the relative length of -..iiits aliont as follows: III 52, IV-35, V 95 (20f75). 

 Cornicles longer, less eiirved, almost as long as the 5tli antennal joint. ( Vin<la 

 liiii^cr, lUMvided with 5 liristles. 



Length of bi)dy-about 1.1 mm. .Vntenna-abont 0.85 mm. 



(The third instar). letters from the second in the following characters: 

 Antennae longer, 6-jointed, with some knobbed hairs; the 3rd joint not imbri- 

 cated, sometimes shorter than the 4th; the 4th very slightly imbricated on the distal 

 part; the relative length of joints about as follows: ir[-33, IV-32, Y-35, VI 94 

 (20 f 74). "Wing-pads beginning to appear. Cornicles longer, less curved, slightly 

 swollen on tlie distal portion, somewiiat expanded at the base, very slightly imbri- 

 cated, almost as long as the 6th antennal joint, about 4 times as hjng as the cauda. 

 Cauila longer, almost as long as wide, provided with 3 pairs of lateral and one apical 

 bristles. Tibiae dusky; hind tarsi sliglitly longer than the eauda. 

 Length of iiody-about 1.3 mm. Antenna about 1.25 mm. 

 C'ornielc-about 0.55 mm. 



(The foiirtli iu'-tar) Differs from the third in tli? following cliaract'rs: 

 (Wingless form) Antennae loiiger; the relative length of joints about as 

 tojiows: Til Go, IV 60, V 55, VI i:U (27 + 107). Curnj.'les v.'ry long, much 

 iongei' tliun the fith antennal joint. ( '.iiida longer, somewhat longer than wide, 

 provided with about 5 pairs of lateral and an .ipieal bristle. 

 Length of body about 1.7 nun. .\utenni about 1 .•> nim. 

 ( '(irnichi-abont O.'Jo mm. 



(Winged form). The relitive haigtii of antennrd joints about as fnilows: 

 iri-70, IV-60, V-5;5, VI-137 '27+TlO). Wing-p.uls well developed, dusky. Meso- 

 tiiora.v green is] I. 



Lengtl) of body about 2.1 mm. Antenna about 1.55 mm. 

 ('orniele-al)out 0.(58 mm. 



])esirilieil from specimens colleeted in Afareh, 1023, at Taihoku. 



Macrosiphum perillae n. sp. 



(IT. VIII, B, figs. 1-5) 



Wingless viviparous female. 



Body p.de yellowish brown, somewhat sliining. Thorax dark brown on the 



dorsum, abdomen dark brownish on either side of the din-sum. Eves dark brown. 



