ApMdidae of Formosa— 4. 33 



long as the 4th, 5th and 6th antenna] joints taken together, provided with 

 numerous very long stiff bristles which are lunger than those on the head; the 

 distal portion furnished with minute spinules. Caudal segment with a process, 

 provided with many very long bristles. Ana] plate almost as broad as the caudal 

 segment, slightly sinuated on the posterior margin, reticulated, with many very 

 long bristles. Legs slender, with many long set; e : hind legs longer than the 

 cornicle. 



Length of body — about 2.3 mm. Antenna — about 3.0 mm. 



Fore wing — about 3.1 mm. Cornicle — about Id) mm. 



Host. — Myrica rubra, attacking the young leaf. 



Distribution.— Formosa: Tattaka in Taichu-prefecture (altitude about 7330 

 feet). A winged and many apterous viviparous females were collected by the 

 author on May 17, 1924. 



Greenidea mangiferae n. sp. 



Wingless viviparous female 



Head fused with the pronotum, very broad and straight on the front 

 margin, the dorsal surface furnished with about 10 long stout hairs winch are a 

 little shorter than the basal 2 antenna] joints taken together and provided with 

 a few minute branches at the tip. Eyes distinctly protuberant, with prominent 

 ocular tubercles. Antennae long and slender, provided with some long hairs 

 which are almost as long as those on the dorsum of the head: the 3rd joint 

 somewhat imbricated, without sensoria; the relative length of joints about as 

 follows: 111-95, IV-59. V-62, VI-50+ ? Rostrum slender, reaching a little 

 beyond the hind coxae. Thorax wider posteriorly, furnished with many long 

 stout hairs, the ventral surface with numerous granules. Abdomen almost circular 

 in outline, rather strongly chitinized, provided with many very long stout hairs, 

 which are almost as long as the basal 2 antennal joints taken together and 

 furnished with a few minute branches at the tip. Cornicles long, a little 

 narrowed toward the both ends, narrowest on the distal portion, very slightly 

 curved, about 8 times as long as wide, almost as long as the 3rd ami 4th 

 antennal joints taken together, reticulated except on the basal and distil portions, 

 provided with many long hairs which are longer than, but not so stout as. those 

 on the abdomen, with no branches ait the apex, the distal portion with numerous 



