Aphklidae of Formosa. — 3. 39 



The fourth iustar differs from the third iu the following characters: Wing- 

 pads well developed in tlie nymph of the winged form. Antennae, cornicles and 

 Cauda longer. 



Described from specimens collected on Lactuca dehiUs in February, 1923, at 

 Taihokn, Formosa. 



Some viviparous females, Iwtii winged and wingless, were collected by Mr, M. 

 Kurisaki at Tadono in Wakayama-prefecture, Japan, on April 28, 1920, and by the 

 author at Kyoto, on June 4, 1923. Hitherto unrecorded from Japan. 

 Amphorophora sonchifoliae Takali. 



Aphididae of Formosa-2, p. 31 (1923). 



The cornicles of tlie winglegs viviparous female are about 1.5 times as long as 

 the Cauda as in A. olemceae v. d. Coot. In the original description thoy arc in- 

 correctly recorded as being about 1.7 times as long as the cauda. 



Amphorophora taiwana Takali. 

 (PI. IX,B, iigs. 3-4) 

 Macroslphum tanoanum, Takahashi, Aphididae of Formosa-2, p. 16 (1923). 



The cornicles of the wingless viviparous female are slightly to somewhat more 

 dilated on the distal portion and this species must be removed to the genus yhiipho- 

 rophora. 



Rhopalosiphum lahorensis (Das) 

 (PI. VI, B, figs, 9-13) 

 Aphididae of Formosa-1, p. 38 (1921); Aphididae of Formnsa-2, p. 92 (1923). 



Wingless viviparous female 

 Green. Eyes blackish brown. Antennae pale greenish, blackish on the distal 

 half. Cornicles pale greenish brown, slightly dusky at tlie apex. Cauda pale 

 greenish. Legs pale greenish, til)iao slightly lu-ownish on tiie distal part, tarsi 

 black. Body oval, not covered with a po der, furnished with many, distinct, very 

 short, flat, fan-shaped hairs. Head l)r ad. Frontal tubercles almost lacking. Eyes 

 not very large, distinctly protuberant, tlie ocular tubercles quite small, hardly 

 visible. Antennae slender, imbricated, shorter than the body, provided with a few 

 very small hairs; the 1st Joint much larger than the 2nd, the 3rd without sensoria, 

 the 5th with a sensorium of moderate size; the relative length of joints about as 

 follows: III-35, IV-19, V-22, VI-62 (20-f-42). Rostrum almost reaching the 

 hind coxae. Prothorax with a rather small lateral tubercle. 



Abdomen provided with some very short fan-like hairs arranged in a trans- 



