October, '12] DAVIDSON: APHID NOTES 409 



frontal tubercles, longer than the body with the relative size of the joints as in the 

 winged form. Legs light ohve, apical half of femora, tibial apices and tarsi 

 dusky to black. Cornicles and cauda shaped as in the winged form. Beak pale, tip 

 black, reaching to second coxae. 



Occurs sparingly on the Peri^^■inkle {Vinca major) and Convolvulus 

 arvensis. Habitat ; San Jose and Courtland, Cal. 

 Phorodon carduinum Walker. 



On the under side of the leaves of Artichoke, becoming a pest. 

 "\"ery susceptible in California to fungus diseases. Kindlj" determined 

 by Mr. J. T. ]\Ionell. Habitat; San Jose, Oakland and Courtland, 

 Cal. 

 Myzus varians sp. nov. (Figs. 14-19.) 



Pupa of alate female (viviparous), dark form. Pale yeUow, prothorax, anterior 

 half of the abdomen, 7th abdominal segment purplish-red. Head pale yellow; 

 ocelli prominent, light red. Eyes dark red. Antennae on large frontal tubercles, 

 reacliing to the base of the cornicles, pale yellow; articulations of joints 3-6 and the 

 filament black. Filament the longest joint, then 3, 5, 4, 6, 1, 2 in this order. Legs 

 pale yellow, tarsi black. Sutiu-es of thoracic lobes reddish, wing pads pale with 

 dusky tips. Abdomen broadest at the fourth segment, then tapering abruptly to 

 the Cauda. Cornicles about as long as antennal joints 4 and 5 together, narrowing 

 from the base and curved, pale with the tip black. Cauda almost colorless, conical, 

 as long as the hind tarsi. Beak pale, tip black, reaching the second coxae. Under 

 side of the abdomen and thorax more or less reddish. 



Measurements ;-Body, length 1.73mm 

 " width .72mm 



Alate viviparous female, dark form. Pale greenish-blue, first three and last two 

 abdominal segments tinged with crimson (fainter in some individuals). Rest of 

 abdomen with a faint bluish tinge. Head and antennae black. Eyes dark red. 

 Frontal tubercles prominent. Antennae exceeding the tip of the abdomen, ba.se of 

 third joint pale; relative sizes of the joints as in the pupa. Prothorax brownish-red. 

 Thoracic lobes and scutellum deep brown. Wings large ; sub-cost a and insertions 

 reddish-grey; stigma long, narrow, grey; veins narrow, grey, second fork of the 

 cubitus or third discodial slightly nearer to first fork than to the wing apex. Legs 

 yellowish-red, apical half of femora, tarsi, and tibial apices black. Abdomen widest 

 at segment three, with dusky transverse bands which sometimes coalesce to form 

 a quadrilateral area on the dorsum, and with black lateral spots, and with a trans- 

 verse dusky bar below the cornicles. Cornicles dusky, slightly curved, rather nar- 

 rowed at the apex, not quite as long as antennal joint 3 and not quite reaching the 

 tip of the Cauda. Cauda black, conical, uptm-ned, equalling the hind tarsi in length. 

 3 



