Al'mi'ID-E (IF FOIIMOSA. (]{ 



The sexupavfo show a greater tendeuc}- tj be abuonuul thau do the 

 females of other generations and the males. 



These insects are not good fliers ; the sexiiparw, especially, do uot fly as a 

 rule, and the wings are not used in flight, the veins consequently tending 'to 

 degenerate. 



The majority of the abnormalities are in the 3rd oblique on tlie fore 

 wiugs as is common in other plant-lice. 



These obsen-ations were made near Tokyo during 1919. 



Aphis horii u. sp. 



(PL Y, A, figs, 7— S ^-, PL V, B, fig. 4) 



AViugless vivi]3arons female. 



Dark green. Head, antenna?, cornicles, cauda, anal plate and legs almost 

 black. Eyes lirowu. Thorax with black spots and j^atchos on the dorsum. 

 Abdomen with 2 black bauds behind the cornicles. Bod}" broad, with some 

 short hairs. Head pniTided with many moderately long fine hairs. Antenua> 

 short, stout, imbricated, provided with moderately long fine hairs ; the 3rd 

 joint lacking sensoria ; the relative length of joints as follows : HI — -62, TV 

 — 46, V — 39, \1 — 6(3 (22 -l- 44). llostrum reaching beyond the middle coxae. 

 Prothorax with a large lateral tubercle which is short, st<jut, rounded, and 

 larger than those on the alxlomeu. Abdomen with 7 small rounded lateral 

 tubercles on each side, of which those on the 7th segment are the largest. 

 Cornicles very long and slender, distinctly curved, moderately dilated towards 

 the base, imbricated, mnch longer than the 3rcl anteunal joint, reaching the apex 

 of the canda and nmre than 3 times as long as the cauda. Cauda stout, provided 

 with many long fine hairs. Legs sttnit, provided with many lung fine haiis. 



Length of bod^- — o.O mm. Antenna — l.o mm. 



Ct)rnicle — 0.7 mm. 



Winged viviparous female. 

 Dark green. Head, eyes, aDtenna\ thorax, cornicles, caud;i and legj black. 

 Abdomen with some short black bands on the middle of the dorsmn and some 

 small lilack patches, on the sides. Wiugs hyaline ; \eins and stigm-i brown. 



