Vol. \-III] ESSIG & KUWANA-SOME JAPANESE APHWIDM 57 



smallest and reticulate for a short distance as shown in the ac- 

 companying drawing. Cauda dusky orange, 0.4 mm. long. 



This material, which comprises a good series, was taken in 

 two lots as follows : 



1. On Gonzui, Euscaphis japonica Dipp., Somei, Tokyo, May 

 7, 1913. Collection number 1. 



2. On Mitsuba Utsugi, Staphylea biimalda DC, Nikko, June 

 9, 1913. Collection number 81. These specimens average 

 larger in size than those of the first lot and were the ones 

 from which the measurements were taken. 



Rhopalosiphum lactucae (Kalt.) 



Two lots of apterous viviparous females which check up very 

 well with this species were taken as follows : 



1. On Nigana. Lactuca dcnticulata Maxim.? (listed as L. 

 dentata Makino), Tokyo, May 17, 1913. Collection num- 

 ber 37. 



2. On Nogeshi (sow thistle), Sonclius olcraccus Linn., Na- 

 kano, Tokyo, May 26, 1913. Collection number 62. 



Rhopalosiphum lespedezae, new species 

 Figure 9 



Winged viviparous female (Type)— Selected from four 

 imperfect individuals. Length 1.28 mm., width 0.68 mm. Pre- 

 vailing color green. Head brownish or dusky. Antennje dusky 

 or black throughout, imbricated, with a few short clubbed or 

 thick hairs ; lengths of articles : I, 0.1 1 mm. ; H, 0.09 mm. ; IIL 

 0.53 mm.; IV, 0.51 mm.; V, 0.43 mm.; VI, 0.74 mm. (base 

 0.14 mm., filament 0.6 mm.) ; total 2.41 mm. The sensona 

 vary somewhat in size, there being 12 on article III of the left 

 antenna and the usual number on V and VI. Paratypes show 

 a variation in number from 11 to 15 on III and from to 4 on 

 IV. Those which do occur on IV are mostly small. Rostrum 

 reaching to the 3rd coxae. Apical portion of the femora and 

 tibiae and all of the tarsi black, the remainder of the legs pale. 

 Primary wings 2.66 mm. long, with the base of the radial sec- 



