latter at the liind inarc^in s(Mue\vlit infuscated, tlie 2nd furcal at the middle of the 

 first. Abdomen much longer than the head and thorax combined; cornicles lono-, 

 stroiis^ly dilated in the middle, fuscous, at the basal half paler; cau(.la paler, about 

 1/3 tlie length of the c(^rnicle. I -titi^s j^reenish, femora anel tibiae at the apices and 

 the tarsi, fuscous. 



T>cnfTth — 5.5 mm.; exp, 1 5 mm.; antennae 7 mm.; cornicles 0.8 mm.; cauda 

 0.3 mm. 

 Apterous \'iviparous female — Differs from the winged viviparous female as 

 follows : 



•Bod)' oval, at both" ends acuminated. The 3rd antennal joint with about 6 

 sensoria on the outer side. Cornicles narrower iri the middle, at the apices fuscous; 

 Cauda somewhat broader and shoiter. Apices of the tibiae and the tarsi, fuscous. 



Length — 4.5 mm.; antennae 6 mm.; cornicles 0.5 mm.; cauda 0.25 mm. 



Hab. — Hokkaido (Kushiro); collected b\' Mr. T. Okuxi. 



F. P. — Dryopteris dilata ; on the under side of the lea\es. 



Nom, Jap. — Warahi-tokkiireahiira. 



20. Phorodon viburni ". sj). 



Winged viviparous female — Body brownish, oval. Antennae somewhat longer 

 the body, the antennal-process on the innerside with a large wart-like pr^jjcction, 

 the 3rd joint with about 12 small sensoria on the outer side, the 4th anti 5th 

 .subequal to the 3rd and 4th taken together. Wings with a light fuhous tinge, 

 veins brownish, stigma grayish, 2nd furcal rather nearer to the apex of the hrsl. 

 Cornicles long, nearly as long iis the middle femur. Cauda conical, at tlu base 

 somewhat as broad as the cornicles. Legs concolorous with the body, femora at 

 the apices somewhat infuscated. 



Length — 1 .5 mm.; exp. 5.5 mm.; antennae r.8 mm.; cornicles o.4 mm.; cauda 



0.12 mm. 



Pupa— Differs from the winged viviparous female as follows: 



1 he tubercles of the antennal-process and the first joint more consjMcuous, 



the 3rd joint with a few indistinct sensoria on the outer side, the 4th .somewhat 



shorter than the 5th, the 6th nearly as long as the other joints combined ; ante- 



rhinarial about 7 times as long as the postrhinarial. Wing-sheath reaches not to 



