548 Pomona College Journal of Entomology 



long, rather flattened, liairy, iridescent green. Cornicles — (Figure 181 F). Cylindri- 

 cal, slightly wider at base and tajiering gradually to tip, imbricated, black, with one 

 or two hairs as shown in drawing, carried at nearly right-angles to the main axis 

 of the body, length 0.65 mm., width at base 0.12 mm. Legs — Normal, hairy, coxae 

 dark; base of femora liglit, apex dark; middle of tibiae light, remaining dark; tarsi 

 dark. Style — (Figure 181 H). Ensiform, black, half or slightly more than half as 

 long as the cornicles, length 0.35 mm. 



Young — Dark metallic green. 



Male — Oestlund reports the male as small, apterous, reddish-brown, antenna 

 as long or longer than body, black, except base of III light. Eyes with blunt 

 tubercles, no ocelli. Beak reaching second coxae. Legs black with base of 

 femora and tibia light. Abdomen longer than broad, flat above, with a row of 

 black impressed dots above the insertion of the honey-tubes. Honey-tubes black, 

 cylindrical, hardly twice the length of the tarsi. Style two-thirds the length of 

 the honey-tubes. Anal plates black, upper rounded at end, lower divided into two 

 diverging lobes or projections which are cylindrical, black and very hairy on the 

 under surface. List. Aphid Minn., pp. 21-22. I have not obtained this form here. 



Hosts — Taken in great numbers from the tender slioots of the common Cali- 

 fornia Sage {Artemisia caJifornica Less.) Oestlund collected it from Artemisia 

 frigida. 



Locality — Santa Paula, Cal., in the dry washes at the mouth of the Santa 

 Paula Canyon. Altitude S.IO feet. Date of collection — April 4, IQH- Serial 

 number 23. 



Macrosiphum laevigatae n. sp. 

 WINGED VIVIPAROUS FEMALE (Figure 182 A) 



Length of body not including style 2.4 mm., width of mesothorax O.iQ mm., 

 greatest width of abdomen 0.73 mm., wing expansion 7.4 mm., body very long and 

 slender. 



Prevailing color — Green. Head — Nearly as wide as long, pinkish or yellow- 

 ish green, with base slightly darker. Eyes — Red. Antennae — (Figure 182 a). 

 Situated on prominent frontal tubercles, the inner margins of which are nearly at 

 right angles to the head, (tubercles verj' slightly gibbous), reaching far beyond 

 tij) of abdomen or tip of cornicles, articles green, except apical tips of III and IV, 

 tJie apical iialf of V and all of VI du.sky, lengths of articles: I, 0.16 mm.; II, 0.09 

 mm.; Ill, 0.83 mm.; IV, 0.77 mm.; V, 0.73 mm.; VI, L7 mm. (spur 1.52 mm.); 

 total 4.28 mm.; ten circular sensoria on III. Rostrum — Reaching to second coxae, 

 light yellowish-green with dark tip. Prothorax — Slightly wider than the head, 

 without lateral tubercles, darker green than head with two dorsal lighter blotches. 

 Mesothorax — Liglit green, muscle lobes amber or pinkish. Metathorax — Light 

 green. Abdoinen — Long and slender, dark green with two lighter green longi- 

 tudinal strijies extending full lengtli on dorsum. Cornicles — (Figure 182 b). Very 

 long, cylindrical, with slightly wider base and mouth, curved outwardly, green, 

 apical one-seventh dusky and irregularly marked (F'igure 182 c), slightly restricted 

 before apex, length 1.1 mm., width O.O.I nnn. Legs — Very long and slender, 

 slightly hairy, coxif light green; fcniDra diisUy with basal one-third light green; 



