APHIDID.E OF FORMOSA. (53 



juid 5 very small bluut tiilicrcles in frout of the cornicle. Cornicles ;i little 

 longer than wide, somewhat constiictL~d alwut midlengtli. Cauda globular, a 

 little wider tliau each lobe of the anal platt^ Avhich is deeply bilobed. L(>gs 

 very long aul slender, provided with ninuerons moderately or rather long bristles 

 on the disfcd half of the tibia. 



Length of bxly — 19 mm. Antenna — 2.G.5 mm. 



Fore wing — 2.5 mm. 



Host — Bmahusa sp. 



Disti-ibutoiu.- — .Japan : Shikoku (Uwajima"!. 

 North America. 



Hithei'bi um'ecordcd fi'om Japan. 



Collected by ]\L'. 8. Knwayama in March 1919. 



Myzocallis yokoyamai n. sp. 



(PI. m, A, figs. 5—2) 



AViuged vivipai'ous female. 



Green. Head yellowish green, slightly dusky. Eyes almost white. Rjstinnu 

 pale yellow, with the tip black. Ant.iuuao pale yellowish, with the apices of 

 the joints black. Mesothorax brownish. Dorsal tuljercles on the thorax green. 

 Abdomen provided with 3 pail's of finger-like tnlx'i-cles, of which the first is 

 green and the other two ai'e black. Cornicles and cawla almost x^ale yellowish 

 gi-een. Wings along the 1st and 2ud obliques shghtly clouded ; veins pale 

 brown, blackish at the bases of the obliques; stigma dusky. Fore femora 

 almost colourless, but the middle femora x^iile gi-een, slightly dusky at midlength, 

 and the hind pan- bkck, with the biises pale gi-een and the apices paler ; 

 tibiae ptile brownish ; tarei black. Body oblong. Head provided with 2 i^au-s 

 of very long capitate haii's arising fi-om small tulxTcles U^bvcen the itutenua 

 a pair of short similar haii-s behind these long ones, and 4 very short simiLu' 

 ones ai'aauged in a transvei-st; row ncai' the hind margin. Frontal tuliercles 

 very shoii. Ej'es Lirgc, pr(jtul)er:mt. 



Antenniie slender, provided with a few very short capitate biii-s ; the Isfc 

 joint shorter than the longer capititte hail's on the head ; the 3rd somewhat 

 imbricated on the apicid portion, provided witli 8 or 9 circuLu' sensoria of 



