30 II. Takaliaslu 



Cauda l)lafl<. AIkIoiucu dark griicu, hhiL'kisli on tlir iIdi-suih. Wiii^s liyuliuc, vi^iiis 

 brownish. Logs brown, distal halves oi'l'cniora, apices of tii)iae, and tarsi bjaeh. 



Fniutal tubereles well dcveloi)ed, modcratidy convex on the inner side wliieh 

 is provided witli some rather long bristles. Antennae imbricated, with a few very 

 short hairs; tlie 1st joint very large, moderalely convex on the inner s'de; tlii^ ^b'd 

 "oiut with the basal tive sixths ]>:ovi<led \\it]i almut lo circular seusoria of mediiuu 

 size, ni)t arr.inged in a single row; llie 4tli \\i(hunt sMisoria; the relative length of 

 ■uints aliont as Ibllows: IlM'2o, IV-87, V-81, VI-218 (32+ ISC). Eostrum nearly 

 reaching the middle coxae. Abdomen with some iiidderately long lirislles. ('i)rnicks 

 cylindrical, ahmst as linig as the 4th antennal nint, somewliat imbricited, somewhat 

 expanded toward tiie bnse, soiuewhat enrved. M'iiig veins normal; hind wings with 

 2 sligiitly divergent oliliijnes; liooUlets 3. J/'g-^ long and slender, famished wilh 

 moderately long hairs; hind tarsi shorter than the bas<! of the las' antenna] "oinl. 

 Length of Uxly-abont L7 mm. Anteiina-alMint 2.5 mm. 

 Cornicle about •).4 mm. Fore wing al>out 3.2 mm. 



Hoi^t.-C'fci/Kitis sjicrics. attacking tiie hjwer suriacc of the haf. 



Distril)ution. r\)rmosa: Taiiioku. 

 Xorth America.. 



iritiierto unreeordeii from Formosa. 



A tew wingli'ss and a wing'il vi\iiiarous I'emale were collected on January 5, 

 1923, by the author. 



Myzus plantagineus Pass? 



Passeriiu, Cli Alidi, p. 3o (1800j. 



Wingless viviparous temale. 



I'ale lirown, greenisli on the anterior half and yellowish on llie posterior |)n-t. 

 Ey(s black. Anienu.ie p.ile frown, disal half of the otii joinl, and tlie (illi black. 

 Cornicles brownish on the hasal half, wi:h the distal part blackish. Cauda lule 

 yiillowish b.own. Legs pale brown, apices of libi:ie, and tirsi l)|ack. JSodv 

 ova!. Head almost wilhout hairs. Froutal tubercles almost as long as the 2ml 

 antennal ((int, moderatelv convex on the inner siil". Antennae lonsi and verv 

 slender, inda-icated, without liairs; the 3rd joint without sensorii; tlie otii with a 

 sen.sorium of medium or rather small six; at the tip; the relative length of ;oints as 

 tbll,,ws: JIL8S, IV 70, V-57, VI 123 (23+ ICO). R,.strum reaching th" hind 

 coxae. I'rothorax with a very small blunt lateral tulvn'le. .Vbdoiuen with a few 

 very small fairs. Cornicles very long and sleii<|er, cylindrieal, slighllv curved, 



