66 K- Tak:iliaslii 



Cauda not distinct, quite short, without hairs. Ijcgs stout, tibiae almost as long as 

 the 3rd antennal joint, provided witli a few ratlicr long bristles which are not capi- 

 tate; hind tarsi almost as long as the base of the 4th antennal joint; limpid hairs 

 present between the claws. 



Length of body-about 0.45 mm. 



The 2nd, 3rd, and 4th nymphal instars are each provided with many capitate 

 hairs on the dorsum, which in number and distribution are equal to the hairs of the 

 1st instar. In the 1st instar one pair of bristles on the front of the head is scarcely 

 or not capitate, though all other hairs on the dorsum are distinctly capitate. In the 

 2nd and subsequent instars all the dorsal hairs are capitate. 



The ocular tubercles begin to appear at the 3rd instar. In the 4th instar the 

 cornicles are almost as long as wide, scarcely constricted near the middle, with the 

 <anal plate not bilobed as in the young nymph; and the tubercles which are present 

 on the dorsum of the adult are wanting in the nymphal stage, as in other Calli- 

 l^terina. 



Near Tailioku, the eggs hatch in the first week of March, tlie adults of tlie 

 first generation, which are M'inged, appearing about the 2oth day of tliis montii. 

 The oviparous females were observed as late as the 6th day of December in 1922, 

 near Taihoku. 



The eggs are deposited upon the lower sides of twigs, are yellow in colour when 

 newly produced, darkening to black in a day, and are variable in shape as shown in 

 the figures (PI. Ill, A, figs. 1-4), measuring about 0.37 mm. in length. The winged 

 viviparous females have the habit, when disturbed, of jumping from the liost as in 

 many other Callipterina. 



In the oviparous female the head is provided with a pair of slightly or sca- 

 rcely capitate hairs on the front, 2 pairs of capitate hairs between tlie antennae and 

 4 similar hairs arranged in a transverse row, as in the nymph of tlie 1st instar of 

 the viviparous female. 



Shivaphis celti Das. 

 (PI. Ill, A, fig. 5 & PI. V, A, fig. 1 ) 



Aphididao of Formosa-1, p. 74 (1921) and ibid.-2, p. 131 (1923). 

 Wingless oviparous female. 



Dark yellowisli brown; wax-pores dusky. Head yellowish. Eyes dark 

 brown. Antennae pale yellowish, apices of the 3rd, 4th and 5th joints and tlie 6tli 

 blackish. Cornicles brown. Cauda dusky yellow. Fore legs pale brown, with the 



