112 nn-i^ ^MJ^^^Sk^nommucmm 



Date of Coll.— June 5, 191 7. 



No m . Jap . — Itaya-midon-keab2ira . 



13. Chaitophorus fraxinicolus n. sp. 



Much resembles C. viridis Mats., but differs from the latter as follows : — 

 Head and pronotum somewhat infuscated. Antennae greenish, the 3rd joint 

 with about 7 small indistinct sensoria; anterhinarial nearly twice as long as the 

 postrhinarial. Thorax greenish, dorsum concolorous, abdomen dark brown. Cor- 

 nicles fuscous, and at the bases much more enlarged. 



Length — 3.4 mm.; antennae 3.5 mm.; exp. tegm. 10.5 mm.; cornicles 0,25 

 mm. 

 Nymph — Differs from those of C. viridis Mats, as follows: — 

 The 3rd antennal joint somewhat shorter than the 6th, anterhinarial about 4 

 times as long as the postrhinarial. Abdomen mostly infuscated. 

 Length — 2.6 mm.: antennae 2.6 mm. 



Hab. — Hokkaido (Sapporo) ; many specimens collected by the author. 

 F. P. — Fraxinus longiciispis (Aodamo). 

 Date of Coll. — June 3, 1917. 

 Nom. Jap. — Aodamo-keabura. 



14. Chaitophorus populi sieboldi n. sp. 



Winged viviparous female — Body dark brown to fuscous, abdomen on the 

 sides olivaceous. Antennae fuscous, longer than wide, with a few rigid hairs, 

 the 3rd joint fulvous, somewhat shorter than the 4th and 5th combined, the latter 

 two subequal ; anterhinarial about twice as long as the postrhinarial; the 3rd joint 

 with about 6- 10 sensoria on the outer side. Frons with a few fine hairs. Wings 

 subhyaline, stigma fuscous, fusiform, nearly thrice as long as broad, stigmatic 

 vein opening at the middle of it ; veins fulvous. Cornicles short, fulvous, at the 

 bases fuscous ; cauda roundish, pale fulvous. Legs fulvous, 2 posterior femora, 

 apices of the tibiae, and the tarsi, fuscous. 



Length — i.o mm.; antennae 1.2 mm.; exp. tegm. 4.5 mm. 



Apterous viviparous female — Differs from the winged viviparous female as 

 follows : — 



Body above mostly with a pale fulvous stripe. Antennae somewhat shorter 



