Apkiditlae of Formosa— 4. 4.^ 



about 5 minute sensoria in a row on the basal part of the subcosta ; the. 1st 

 oblique very stout, moderately curved; the 2nd distinctly curved on the distal 

 portion; the 3rd not obsolete at the base, once branched, the upper branch 

 extending near the apex of the wing; stigma stout: stigmatic vein moderate!;, 

 curved: hind wings with 2 divergent obliques; booklets 5. Cornicles small, 

 on hairy cones which are higher than in the apterous form. Cauda almost 

 semicircular. Anal plate rounded. Legs slender, covered with fine hairs ; hind 

 tarsi long, slender, a little longer than the 6th antennal joint, provided with 

 longer hairs, the 2nd tarsal joint almost 4 times as long as the 1st. 



Length of body — about 4.7 mm. Antenna — about 2.2 mm. 



Fore wing — about 4.3 mm. Hind tibia — about 2.1 mm. 



Host. — Jjiguidwrnbar formosana, attaking the stem. 



Distribution — Formosa: Nanto in Taichu-prefecture. 



Some specimens protected by ants were collected by Mr. J. Sonan in 

 February, 1925. This aphis i^ easily distinguishable from other Stomaphis bj 

 the slender hind tarsi. 



Anoecia sp. 



Host. — unknown. 



Distribution. — Formosa : Niitakayama. 



A winged viviparous female with broken antennae was collected by Mr. J. 

 Sonan at Hattsukan on September 12. 1924. The body, wings and legs of this 

 specimen exactly agree with those of Anoecia corni Fab. The genus Anoecia 

 is new to Formosa. 



Myzocallis mushensis n. sp. 



(PI. II, B. figs. 9-10) 



Winged viviparous female 



Tale yellow. Head and pronotum with 3 longitudinal brown stripes. Body 



narrow, soft, almost without hairs. Head somewhat protruding above the Iron; 



ocellus, with a pair of very short blunt tubercles between the antennae. Front;, 



tubercle's lacking. Eyes large, with ocular tubercles Antennae very long and 



slender, provided with a i'ew very short hairs ; the 1st joint a little larger than 



the 2nd; the 3rd dusky, paler at (lie base, a little shorter than the front tibia. 



stouter than the 4th and subsequent joint-, provided with about 40 sensoria 



