PROCEEDINGS. 191S. ,S3 



Apterous viviparous female — General cnlnv lii;lu yellowish inrecn. 

 tlie only exceptions l>eing the sixth segment, with sjiur and tarsi, which 

 are dusky to Lilack. Nectaries and cauda same color as the body, eyes 

 dark red. ilody long and slender, the antennae reaching beyond tlie tip 

 of the cauda and with the spur longer than the third segment. Antennae 

 slender with a strung and prominent antennal tubercle. In this funn. 

 as sometimes in the pu])ae. the third antennal segment bears from two 

 to sexen irregular sens(jria situated near the base and lying along one 

 side of the segment. Legs long and slender. The nectaries are long and 

 tapering, usually with a slight swelling near the tip. wliicli makes them 

 appear strongly constricted just back of the tip. Cauda slmrt and slightly 

 ensiform. 



Measurements — Length of bodw 4mni. ; width. 1 5S mm.; length nf 

 antennae by segments. L 0.1.^ mm.; 11. O.O'imm.; 111. 1.74 mm.; I\', 

 0.93 mm.; \', 0.84 mm.; \'I. 0.3 mm.; s])ur. l.S mm.; tutal length of 

 segments. .^.288 mm.; length of nectaries, 1.5 mm.; cauda. side measiu'c- 

 ment, 0.3 mm. 



Pupa — (jcneral color light green covered with a fme white waxy 

 puwder iir bl(jom. This form is slightly .shorter and slightly narrower 

 than the apterous forms. Length of Irndx". ,^ mm.; width, 0.').^ mm. 



Alate viviparous female — First collected in Stanley f'ark. A'ancou- 

 \er, ilritish Cnlumliia. July 14. 1''13. General cohir, greenish white, tlie 

 six antennal segments with spur and tarsi are diiskv to black; eves dark 

 red. Ilody long and slender and without distinct markings. Antennae 

 and legs long and slender, antennae reaching beyond the end of the 

 cauda. Antennal tubercles large and strongly angled at the upper inner 

 edge. Third se.gment with 12 to 18 round sensoria, which \ary greatly 

 in size. Wings h_\-aline and df the usual t\-pe. 



Measurements — Length of body, 3.? nnn.; width. 1.2.^ nmi. ; tulal 

 wing ex])anse, 8 to 9 mm.; length of antennae by segments. 1. l.i mm.; 

 II, 0.00 mm.; IH, L06 mm.; I\', 0.05 mm.; \'. 0.9 mm.; \1. 0.3 mm.; 

 spur. 2 mm. ; length of nectaries. 1.3 mm. ; cauda. 0.55 mm. 



2. Macrosiphum frigidae ( )estlund nn Artemesia sp., W-rnon. jnlv 

 16. 



3. Macrosiphum rudbeckiae Filch .m Solidago s]i.. N'cnion, juK- 1(). 



4. Macrosiphum urticae Schrank on Urtica dioca, Nernon, July 16. 



5. Macrosiphum ludovicianae ( )estlund on Artemesia ludoviciana, 



X'ernon. July l('). 



0. Macrosiphum rosae Linn., mu Rosa sp.. N'ancmuer. Inly 12. 



7. Nectarosiphon rubicola ( )estlund on Rubus sp.. \ ancnuver. |ul\ 

 12. 



8. Myzus cerasi h'al).. (in wild cherry, \'ancou\er. |ulv 12. 



