Vol. VIII] ESSIG & KUIVANA-SOME JAPANESE APHWIDJE 73 



Aphis pomi DeGeer 



Collected in two lots as follows : 



1. On Bake (Japan quince or Japonica), ChcBuomeles japon- 

 ica Lindl., (listed as Cydonia japonica Pers.), Nakano, 

 Tokyo, May 25, 1913. Collection number 60. 



2. On apple and Japanese pear, Tokyo, June 2, 1913. Col- 

 lection number 69. 



Aphis rumicis Linn. 



The material taken checks up with this species very well. It 

 was collected as follows : 



1. On Gishi-gishi, Riimex crispiis Linn, (listed as R. japoni- 

 cus Meisn.), Nishigahara, Tokyo, May 14, 1913. Collec- 

 tion number 35. One imperfect wnnged individual and 

 apterous females in this lot. 



2. On Gishi-gishi, Tokyo, May 26, 1913. Collection num- 

 ber 61. 



Aphis siphonella, new species 

 Figure 18 



Winged viviparous female (Type)— Selected from six 

 specimens. Length 1.2 mm., width 0.6 mm. Head dark. An- 

 tennae black throughout, imbricated and with few hairs; 

 lengths of articles : I, 0.05 mm. ; II, 0.05 mm. : III, 0.26 mm. ; 

 IV, 0.23 mm.; V, 0.26 mm.; VI, 0.42 mm. (base 0.12 mm., 

 filament 0.30 mm.); total 1.27 mm. Sensoria numerous on 

 III, a few on IV, and normal on V and VI. On the left an- 

 tenna (right member missing) there are on III, 20; on IV, 4. 

 The single normal one on V is quite a distance from the tip. 

 On the paratypes the number varies as follows: III, 7-20; IV, 

 0-1. Rostrum (paratype) reaching to the 2nd coxae. Pro- 

 thorax dark green, the remainder of the thorax black ; distinct 

 lateral prothoracic tubercles evident on some of the paratypes 

 as are also several pairs of marginal abdominal tubercles. 

 Coxse, tarsi and the apices of the femora and tibiae black, the 



