13 



Greatest width of abdomen 1.29 m. m. 



Length of antennae 1.56 $r 



Length of cornicle 1*50 p 



Head and pro thorax blackish brown, the other parts green. Head 

 almost similar to that of winged viviparous female. Antennae, rostrum 

 and eyes similar to that of apterous viviparous female. Prothorax as wide 

 as the head. Mesothorax largest, pale green, bearing many small brown- 

 ish spots; wing-cases black. Abdomen oblong, green, impunctate with 

 black tint as that of larva. Cornicles long, cylindrical, longer 

 than the width of body, black, furnished with many black stout hairs. 

 Legs similar to that of winged viviparous female. 



Locality. - Mount. Kappan (Toen Prefecture.) 



Food plant. - Quercus formosana Skan. 



Nom. Jap. - Kurokebuka arimaki. 



Date. -Dec. 1913. 



Type in the Division of Entomology, Agricultural Experiment 



Station, Goverment of Formosa, collected by the author. 



II. Triehosiplmm formosanum n. sp. (PL. VII T; IX, 1, 2.) 



A. Winged viviparous female. 



Length of body • 2.00 m. m. 



Greatest width of abdomen 0.90 ? 



Expansion of wingh 7.00 ? 



Length of cornicle 1.45 ? 



Length of antenna 2.05 p 



Length of fore-wing 2.60 p 



Width of fore-wing 1.00 fr 



Length of hind-wing 1.30 ^ 



