Pomona College Journal of Entomology 543 



and apical one-half of VI dusky, lengths of the articles: I, 0.08 mm.; II, 0.07 

 mm.; Ill, 0..'5 mm.; IV, 0.12 mm.; V, O.l.'J mm.; VI, 0.15 mm.; total .8.'! mm. 

 Thorax — Widening from prothorax, which is very narrow, to base of abdomen. 

 Mesothorax — Much wider tlian the jjro- or metathorax. Abdomen — Widest in 

 middle, ground color is reddisii-brown with two broad lateral and one broad 

 central dorsal, white longitudinal stripes with a whitish transverse stripe between 

 cornicles and several white blotches behind the cornicles. These white stripes and 

 blotches arc produced by the powdery wax and very noticeable irregularities may 

 be observed because of uneven removal of this wax by some external means. The 

 dark areas in the drawing show the ground color of the body while the white areas 

 show the powdery wax. Cornicles — (Figure 178 E.) Truncate, much wider at base 

 than at tip, entirely dark brown or dusky, basal two-thirds hairy. Legs — As in 

 winged form. Stifle — Rounded, liairy, inconspicuous. 



Nymphs and Young — Brownish-red in color, without powdery secretion. 



Host — This species was found in great colonies on the bare twigs of Thuya 

 occidcntalis. European writers report it upon Juniperus communis only. 



Locality — Taken by the writer at Santa Paula and Claremont, California. I 

 am indebted to Mr. J. Neuls, a student of Pomona College, for winged specimens, 

 which I liad been unable to secure. The apterous forms are plentiful, but it took 

 nearly three years to obtain the winged specimens, although a sharp look-out was 

 maintained all of the time. Date of collection — March 7, IQH- Serial number 7. 



This species seemed to be a new one at first, for it was hardly probable that 

 the European species could have been first reported in America on the Pacific 

 Coast, and not have been obtained in the Eastern states (a fact which I have not 

 been able to ascertain). After a close study and comparison with the descriptions 

 given in the works of Koch, Kaltenbach and Buckton, I am satisfied that this is 

 the Juniper Aphid of Europe and has been introduced into the United States on 

 nursery stock. Buckton gives this interesting note: "Mr. Hardy has found the 

 black eggs on the twigs, and sometimes plentifully." "DeGeer states that the 

 male is apterous." 'Mon. Brt. Aphides, III, p. 4t, 1881. 



Macrosiphum albifrons n. sp. 



LUPINE APHID (Figure 179) 



WINGED VIVIPAROUS FEMALE (Figure 180 A) 



Length of body not including style .S.8 mm., width of mesothorax 0.85 mm., 

 greatest width of abdomen 1.8 mm., wing expansion 11.02 mm., large, robust form. 



Prevailing color — Grayish-green, the body proper is bright green and 

 appears so immediately after moulting. The gray color is produced by the secre- 

 tion of a fine, white, powdery wax. Tliis powder may be thick enough to cause 

 the insects to appear silvery. The winged forms do not secrete as much of this 

 covering as do the apterous ones and the green body maj' appear through the thin 

 coating. Head — Somewhat darker than the remainder of the body, nearly as long 

 as wide. Eyes — Sm,-\11, dark red. Antennae — ( Figure 180 a). Situated on slightly 

 gibbous, prominent tubercles, longer than the body, sparsely haired, dusky with 



