226 ENTOMOLOGICAL NEWS [xxxii, '21 



In the alate females IV is about one-third as long as III, V equal to 

 or slightly shorter than IV, and VI subequal to or slightly shorter than 

 V. Walker states that IV is a little more than one-third the length of 

 III, V slightly longer than IV, and VI not half the length of V. 



This appears to be the same species the writer described from 

 spruce at Berkeley, California, under the name of Lachmis 

 vandusci n. sp. 9 



There are two slides in the Buckton collection (2 alate and 

 1 apterous females) labeled Lachnns longipes Dufour, which 

 are most certainly not that species nor are they Ptcrochlonis 

 roboris (Linn.). An examination of the specimens shows that 

 the apterous female is identical with that of D. piceae (Walk- 

 er). In the apterous the rostrum is distinctly lanceolate, while 

 in the alate it is more blunt, resembling in shape the rostrum 

 of D. tujafilinus (Del Guercio). It is very similar to the one 

 figured by Del Guercio 10 as a form transitional between his 

 Lachnns and Lachniella on one side and his Dryaphis and Eit- 

 taclinus on the other. The general body shape and size, the 

 sensoriation, length and shape of rostrum are practically iden- 

 tical with specimens of D. piccac (Walker). Buckton noted 

 this similarity but stated that these specimens were larger than 

 specimens of the other species. As they now appear, such is 

 not the case, however. 



The following are measurements of the two alate females: 



9 Swain, A. F. A Synopsis of the Aphididac of California. Univ. 

 Calif. Publ. Tech. Bull. Knt., vol. 2, no. 1, pp. 50-51, 1919. 

 "'Redia, vol. v, p. 193, fig. 7, 1908. 



