48 R- Takali.islii 



form, siilx^ylindrical, slightly oxjiaiulod iit llic l.asu ami on (lir clis( il 'poi-tion, not 

 curved, not stout, imbricated, uot reticiil. tod, almost us long as tiic 4lli antcniial 

 joint, almost twice as long as the caud:i and not rciiching the b.ise of the caudii. 



Cauda much smaller than that of the wingless form, broadest at the base, 

 tapering, almost as long as wide, without constrictions, stouter than the carniclc, the 

 distal portion provided with 3 pairs of lateral bristles. Wings long; veins normil; 

 obliques on the hind wing parallel; booklets 3. Legs very long and slender; tibial; 

 almost as stout as the 3rd antinntil joint, slightly more slender ;h:iu the corni<'le, 

 provided with many moderate or rather long sclae; tarsi imbricated, hind tarsi 

 almoj^ as long as the eauda. 



Lel%th of body about 1.4 mm. Antenna about 1.3 mm. 

 Fore^^ving about 2.5 mm. 



Hcist.-Aiiciii/sia rai/iNari.i. attacking tlie lower and upper surface of the leaf 

 and the stalk. 



Distribution.-Formosa: Taihoku. 



This aphis is not a typical Anuntph!s and possibly belongs to Apliidella 

 Theobald (Ent. Mth. Mag., 1923, p. 105). 



In 1922, I observed two or three colonies of this species continuously from 

 January to May, during which period many wingless viviparous females were 

 produced, but the winged forms were extremely rare, only two individuals being 

 C3llect(d on March 15. But in 1923, the winged viviparous f 'males were numerous 

 in February at Taihoku. 



Hyalopterus chenopodii (?chr,ink) 

 (PI. VI, B, figs. 1-8) 



Aphis chenopodii, Sehrank, Fauna Boica, II, p. 109 (ISOl,; Kakenbach, 

 Die Pilanzenl. p. 107 (1843). 



Brevicoryne chenopodii, Das, Memoirs Indian Mus., VI, 4, p. 183 (1918). 

 Wingless viviparous female. 



Green. Head brownish. Eyes almost black. Cornicles and eauda green. 

 Legs greenish, tarsi dusky. Abdomen without markings. Body oblong, sliglitly 

 covered with powder. Head rather small, provided with a few short hairs. Fro- 

 ntal tubercles lacking. Eyes rather small, with distinct ocular tubercles. Antennae 

 very short, imbricated, much more slender thiu the front tibia, jtrovidcd with a few 

 short hairs; the 3rd joint without sjusarii, the 5;h slightly sliorter than thi basal 

 two joints taken together, with the sensorinm rather small; the relative length of 



