Matsumura : New Aphidinae ov Japan. I o 



length of the cornicles. 



Length — 4 nini.; exp. 12 mm.; antennae 4.3 mm.; cornicles o.<S mm.; cauda 

 5. mm. 



Apterous viviparous female — Differs from the winged vi\'iparous female as 

 follows : 



The 3rd antenna] joint near the base with about 12 small sensoria, about 6 

 times as long as the postrhinarial. Abdomen on the sides wants fuscous spots; 

 cauda cylindrical, at the apex conical. Tibiae somewhat paler in color. 



r.ength — 3 mm. (excl. cauda) ; antennae 4 mm.; cornicles 0.7 mm., cauda 



0.4 mm. 

 Hab. — Hokkaido (Teshikaga in Kushiro) ; in the middle part of August, 



1917, collected by the author. 

 F. P. — Heinerocallis iniddendor^ffii ; attacking the upper part of the flower- 

 stem. 

 Nom. Jap. — Kwanzo-tokkuriabiira, 



18. Rhopalosiphum ribis L. 



Aphis ribis L. Faun. Suec, p. 258, 975 (1761). 

 Rhopalosiphum ribis Koch., Aph. p. 39, f. 50, 51 (1857). 

 Hab. — Hokkaido (Sappoao) ; Europe, N, America. 

 F, P. — Ribes inbnnn ; attacking the under surface of the leaves, causing 



roundish tubercles. 

 Nom. Jap. — Sngiiri-tokkuriahzira. 

 I have caught at first the winged viviparous species in the latter part of June, 

 1917, in the Botanical Garden of our Imperial Agaicultural College. Its habits 

 and structure do not differ practically from those of the Einopean species. 



19. Megoura dryopteridis n. sp. 



Winged viviparous female — Bodv oblong, }'eliowish. Antennae much longer 

 than the body, the 3rd joint with abcnit 40 sensoria on the outer side, provided 

 with a few short rigid hairs, the 4th scarcely shorter than the 3rd, the ^th dis- 

 tinctly shorter, antcrhinarial about 6 times as long as the postrhinarial, the 6th 

 nearly as long as the 4th aud 5th joints combined, very slender, on each apex of 

 the joints somewhat infuscated. Wings hyaline, veins and stig.na fulvous, the 



