]() B. Takahaslii. 



Distribution— Formosa : Tattaka (altitude about 7330 feet) in Taichu- 

 prefecture; Africa: Java. 



Hitherto unrecorded from Formosa. 



An apterous female was collected by the author on May 17. 1924. The 

 specimen differs from the original description in some characters, hut seems to 

 be identical with this speeies. 



Macrosiphum sp. 



Winged viviparous female 



Yellow. Head provided with some rather long not knobbed setae. Frontal 

 tubercles large, somewhat convex on the inner side. Antennae provided with 

 Minie lather long not knobbed setae: the 1st joint much larger than the "2nd: 

 the 3rd stout, a little imbricated on the basal portion, provided with 23 or 24 

 rather large, not protuberant, circular sensoria scattered over the whole length; 

 the 4th not imbricated, furnished with 0-2 circular sensoria : the oth slightly 

 imbricated; the relative length of joints about as follows: 111-140, IV-100. 

 V-80, VI-149, (22+127). Wings somewhat elouded alone- the 1st and 2nd 

 obliques; veins rather stout; the 1st oblique on the front wine almost straight : 

 the 2nd somewhat curved: the 3rd twice forked, the upper branch extending to 

 the tip <>f the wing: stigmatic vein rather strongly curved: hind wings with 2 

 parallel obliques; booklets 3. Cornicles long, cylindrical, very slightly expanded 

 toward the base, quite slightly dilated near the apex, imbricated, scarcely 

 reticulated at the tip. almost as stout as the hind tibia, almost as long as the 

 4th antenna] joint. Legs long ; tibiae almost as stout as the 3rd antenna! joint, 

 provided with many lone' stout setae which are not capitate; bind tarsi slightly 

 longer than the basal portion of the last antenna] joint. 



Length of body — about 2.'' mm. Antenna — about 2.0 mm. 



Fore wing — about 3.5 mm. Cornicle — about 0.6 mm. 



1 lest. — Petasites triclwlobus. 



Distribution. — Formosa: Sankakuho (altitude about 7500 feet) in Taichu- 

 prefecture. 



Hitherto unrecorded from Formosa. A specimen was collected by the author 

 on May ID. 1!)24. As the description of M. petasites Mats. (.11. Agr. Coll. Sapporo. 

 vii, pt. 6, p. :)!)4) is very brief and my specimen is in a poor condition, the 

 identification i< impossible. 



