19 



Antennae pale yellow, similar to that of apterous viviparous female. 

 Wing cases pale yellow; cornicles yellowish brown, similar in shape to 

 those of apterous viviparous female. 



D. Larva of viviparous female. 

 Very active; body slender, pale yellow, hairy. 

 Locality. - Horisha (Nanto Prefecture.) 



Mount. KappaTi (Toen Prefecture.) 

 Food' plants. Quercus formosana Skan. 

 Quercus serrata Thunb. 

 Querctcs variabilis Bl. 

 Nom. Jap. - Kuro-obi kebuka arimaki. 

 Date. - Feb. 1913(Horisha.) 



Dec. 1913( Mount. Kappan.) 

 Type in the Division of Entomology, Agricultural Experiment Sta- 

 tion, Goverment of Formosa, collected by the author. 



Most cordial acknowledgements are due to Mr. T- Shiraki for his 

 kind counsel and advice. 



EXPLANATION OF PLATES. 

 PL. VII. 



TrichosipJium nigrum n. sp. (1-13.) 



1. Winged viviparous female. (Dorsal view.) 



2. ? ? p (Ventral view.) 



3. Antenna of the same. 



4. Cornicle of the same. 



5. Third antennal article of the same. 



6. Apterous viviparous female. 



7. Antenna of the same. 



