grayish brown; abdomen oval, stigmata fuscous, cornicles inconspicuous, 

 cauda longer than broad, conical, somewhnt infuscated; legs brown, fe- 

 mora at the bases paler. 



Length of body 3.2 mm.; exp. tegm. 12 mm.; antennae 1.7 mm. 

 Larva - yellow, elliptical; antennae paler, 5-jointed, broad and short, 

 at the apices conical, rostrum reaching to the 3rd coxae; abdomen near- 

 ly three times as long as the head and thorax combined, cauda not 

 distinct; legs paler, broad and short. 



Hab. - Hokkaido (Sapporo). 



F. P. - Rhus semialata, Fraxinus bungeana, Syringa amurense, 

 Malus pumila, M. communis ? 



Nom. Jap. -O-watamushi. 

 This is the most common species of the woolly-aphides in Japan 

 and is generally mistaken for Schizoneura lanigera, for the life-history 

 of this insect much resembles that of the latter. In the late summer 

 they fly in immense multitudes so as to give some annoyance to the 

 walker, generally known as Yuldmushi-Snow-ioorm. 



According to Nüsslin ProcipMlus nidificus Low and Hohneria Pos- 

 chringeri Holzen, are the same insect, belonging to the same genera- 

 tions^ cycle, the latter attacking the root of spruce-tree, but the exodus 

 of P. bumeliae Sehr, is not yet known, except some of them attack- 

 ing the roots of the above named plants; P. tesselatus Fitch from 

 Acer dasycarpum migrates to Alnus species and attack the branches 

 and roots of it, while P. xylosti of Lonicera migrates to Picea excelsa 

 and attack the root of it. 



7. Gen. Watabura n. gen. 

 1) Koch -Aphid. P. 283, f. 355 (1857). 



