20 K. Takaliaslii 



Cornicles loiij;, very slender, cylindrical, moderately expanded :it the Lasc, scarce- 

 ly imbricated, rcticnlated on the distal jrortion, almost as long as the 4tli aiitcnnal 

 joint, a little more than twice as long as the canda. Canda long, stouter tlian the 

 cornicle, provided with abont 4 pairs of lateral bristles. I^egs very long and 

 slender, provided with many moderately long setae; hind tarsi imbricated, short, 

 almost as long as the 2nd antcnnal joint. 



Lengtli of body-about 3.0 mm. Antenna-about 5.0 mm. 

 Curnicle-about 1.1 mm. 



llost.-Ck'iiiafin sj). attacking the lower surface of the leaf. 

 Distribution. -Formosa: Taihoku. 



Some wingless viviparous females were collected in Jannaiy, 192', by (lie 

 author. 



Macrosiphxini sp. 



(PI. V, A, tigs. 2-;'.) 

 Wingless viviparous female. 



Uark apple green. Head brownish. Eyes darlv brown. Antennae and corni- 

 cles black. Canda ])ale greenish. Legs pale bro\\ n, distal halves of femora, apices 

 of tibial^, and tarsi l)lack. 



Ikidy oval, j)rovidod wilh a few very short setae. Frontal tubercles jiot 

 conspicuously cjilarged, scarcely convex on tlie inner side. Antennae long and 

 slender, provided witli some short hairs, some of which are slightly capitate; the 3rd 

 joint noi imbricated, wilh one or two rather small circular sensoria near the base; the 

 5tli somewhat imbricated; the relative length of joints as follows: 111-94, IV-79, 

 Y-70, VI-15e5 (25 + 100). Kostrnm reaching beyond the middle coxae. Cornicles 

 cylindrical, modeiatcly stout, moderately expanded toward the Imse, very slightly 

 or scarcely imbricatdl, reticulated on about the distal one-fourth, about 1 .tj times as 

 long as the caiula, abnost as long as, or a little shorter tlian, the 3rd antcnnal joint. 

 Cauda ahiKist eusiiorni, provided with 3 pairs of lateral bristles. Legs slender, 

 with many moderately long setae. 



Length of body-about 1.5 mm. Antenna about 2.0 mm. 



Host.-A plant of the Gramineae, attacking tlie stem. 



Distribution.-Formosa : Shinten. 



A few M-ingless viviparous females were collected on January 7, 1923, Ijy the 

 writer. 



