ApIiicUdae of Formosa— 4. ,", ] 



is green, with some dusky patches. 



(2) Antennae shorter, with the bristles much fewer and somewhat shorter. 



(3) The 3rd antenna! joint shorter, provided with 11-13 sensoria over the whole 

 length (In nigrofaeciata, this joint provided with about 10-13 sensoria over the 

 basal two-thirds or three-fourths). The relative length of antenna! joints about 

 as follows: III-105, IV-44, V-50. VI-93 (37 + 56). (In nigro/asciata, 111-155, 

 IV-G3, V-60, VI-32+62). 



(4) Hairs on the cornicles and legs somewhat shorter. 



(5) Front wings not clouded along the 1st oblique and stigmntic vein which 

 are not stouter than other obliques. Stigmatic vein almost moderately curved. 

 (In nigro/asciata, front wings very slightly chuded along the 1st oblique and 

 stigmatic vein which are somewhat stouter than other obliques; stigmatic vein 

 very slightly curved, extending to the apex of the wing). 



Length of body — about 2.5 mm. Antenna — about 1.8 mm. 



Cornicle — about 1.03 mm. Fore wing — about 3.0 mm. 



Caudal segment rather small, rounded, provided with many very long 

 bristles, without a process. Anal plate larger than the caudal segment, broadly 

 rounded, irregularly reticulated, with many very long bristles. 



Host. — Quercus serrata, Quercus stenophylloides, Castanea formosana. 



Distribution. — Formosa: Tattaka and Sakuragamine in Taichu-prefectnre. 



Numerous viviparous females were collected by the author on May 17, 19 

 and 20. 1921. 



Greenidea myricae n. sp. 



(PL III. A. tigs. 3-1). 

 Wingless viviparous female 

 Green« Cornicles dusky on the distal portion. Body in general shape as 

 in Greenidea leuwanai Perg., provided with many very long stiff bristles, some 

 of which are furnished with a few very small branches at the tip. Head fused 

 with the pronotum, on the dorsum provided with about 10 stout bristles which 

 are almost as long as the 1st antennal joint. Front broad, almost straight. 

 Ocular tubercles very distinct. Antennae striate or imbricated, provided with 

 some very slightly or scarcely knobbed bristles which are almost as long as those 

 on the head : the 3rd joint furnished with about 10 very long and some shorter 

 bristles, without sensoria ; the relative length of joints about as follows: III-108, 



