2 «; fi- WA^m *? A Uli. ;r:i. cd «r m i -- vJc -c 



Length — 1.8 mm.; exp. 6 mm.; cornicles 0.15 mm.; cauda 0.08 mm. 

 Hab. — Holvkaido (Kushiro) ; in tlie early jiart of June, 1917, collected by 



the author. 

 ]•". P. — Aiigclira iirsiiia, suclcin;^' the juices of the flowers. 

 N. J. — Yczoini-abum. 



2. Macrosiphum cercidiphylli n sj). 



Win^red \'i\-iparous female — I'alc yellowisli. Tlu- yaX antennal joint with 

 about 12 roundish sensoria on the outer side, tlie other joints lacking sen.soria ; 

 anterhinarial about 5 times as long as the |)ostr]iinarial ; apices of the 3rd to 5th 

 somewhat infuscated, W'ings hyaline, stigma and veins pale testaceous, 2nd furcal 

 near the middle of the first. Cornicles nearly as broad as the tibia, nearly one- 

 half the length of the posterior femur and somewhat curved near the base. Caud 

 conical, nearly as broad as the femur. .Apices of the femora and tibiae, as well as 

 the tarsi, fuscous. 



Tjength— i.S mm.; exp. 7.3 mm.; cornicles o.:; mm.; cauda 0.1. :; mm,; an- 

 tennae 2.8 mm. 

 Apterous viviparous female. Differs from the winged viviparous female as 

 follows : 



The 3rd antennal joint witli a row of indistinct sensoria, 2 or 3 at the base 

 being distinct; apices of the antennal joints and feinora at the apices are not in- 

 fuscated. Tibiae at the apices, and the tarsi, fuscous. 



Length — 2.r mm.; antennae 2.8 mm.; cornicles 0.5 mm.; cauda 0.2 mm. 

 }Tab. — Hokkaido (Sapporo) ; on the 2nd, July, rgi/, collected by the autlior 



at Maruyama-Park. 

 E. P. — Ccrcidiphylhmi japotiiaitii : on the under surface of the leaf. 

 Nom. Jap, — Katsiira-higenagaahiira. 



3. Macrosiphum giganteum n sp. 



Winged viviparous female — Much resembles M. goboiux M.vrs., but differs 

 from the latter as follows ; 



]iody much laiger. The 3rd antennal joint on the outer side with about 32 

 sensoria in a row. Wings more yellowish, stigma infuscated, veins more robust 



