AriIIDID.13 OF FOKMOSA. 42. 



Body oval, \\'itliout hairs. Frontal tul)ercle.3 very short, hnt the iuuer 

 side somewhat developed, with a very small blunt tubercle. Auteunro im- 

 bricated, lacking haii'.-^ ; the 1st joint slightly convex ou the inner side ; the 

 3rd without sensoria ; the relative length of joints as follows : III — -51, IV — 

 29, V— 24, VI— 87 (13-1-74). Rjstrum stout, reaching beyond the the middle 

 coxre. Prothoras and the 1st and 7th abdominal segments each with a very 

 small lateral tubi^rcle. Coruiclo.3 very long and slender, slightly shorter than 

 the 3rd antennal joint, cylindrical, imbricated except ou the distal portion, 

 very slightly dilated at the base, almost 3 times as long as the cauda. Cauda 

 niirmal in .shape, as wide as or more slender than the cornicle, very slightly 

 longer than the hind tarsi, slightly consti'icted about the middle, pr<_)vided with 

 2 pairs of very long lateral bristles. 



Legs long, provided with many long bristles. 



Length of body — 1.5 mm. Antenna — 1.6 mm. 



Cornicle — 0.37 mm. 



Winged viviparous female. 



Autennro : the 3rd joint provided with 7 largo circular sensoria in a row 

 over the whole length; the 4th with 1 — 2 similar sensoria; the oth with the 

 usual one ; the relative length of joints as follows : III— 47, IV— 21!, V— 2:1, 

 VI—? (12 + ?), 



Host. — 3Iariscus sp. 



Collected l>y Mr. E. Kurosawa in Octoljer 1920. (Taihoku). 



Aphis species. 



(Tl. in, A, fig.3. 9—10 & PL III, B, fig. 1) 



Wingless viviparous female. 

 Green. Eves black. Autennre blackish, paler at the bases. Cornicles 

 ]3ale brown, with the apices blackish. Legs pale gi-ayish green, with the apices 

 of tibite, and tarsi very slightly dusky. Cauda green. Body oval, without 

 hairs. Frontal tubercles almost absent. Autennro short, imbricated, Licking 

 hairs ; the 3rd joint lacking sensoria ; the relative length of joints as follows : 

 III— IS, IV— 13, V— 14, VI— 42 (10 + 32). llostrum very stout, reaching .a 



