134 FRED. y. THEOBALD. 



Young larva. — " Head brownish ; eyes red. Two basal antennal segments dusky ; 

 3rd pale ; 4th and 5th black, base of 4 smoky. Pronotum brownish. Abdomen, 

 meso- and meta-notum green, heavily mottled with purpHsh. Cornicles green. 

 Legs green, with dark tarsi. Hairs on body pale. 



Larva. — '* Head and thorax reddish brown, or brownish orange ; eyes dark red. 

 Abdomen and mid thorax green or yellowish green mottled with reddish brown, 

 purplish brown or purplish. Antennae with segments 1 and 2 dusky, 3 pale, dusky 

 at apex ; 4 and 5 black. Legs greenish, or 1st pair sometimes tinged with ochreous, 

 tarsi dusky. In some specimens tibiae pale and femora only tinged with green. 



Nymph. — "Head reddish brown; eyes deep red. Antennae with segments dusky, 

 2 paler, 3 pale, 4 pale with dark apex, 5 and 6 black. Pronotum of same colour as 

 head ; hairs on head and pronotum pale. Meso- and meta-notum green or obscure 

 pallid greyish-green ; position of thoracic lobes indicated by reddish or purplish 

 colour. Wing-pads of same colour as meso- and meta-thorax. Abdomen bright 

 yellowish-green mottled with dark or paler reddish-brown or dark purphsh. In some 

 specimens the head and thorax are hght reddish-brown and the abdomen yellowish 

 green and hght reddish-brown. Underside of head and piothorax reddish brown ; 

 venter green ; coxae green ; proboscis reaching to 3rd coxae, very dark reddish- 

 brown at base, median area pale, tip black. An active species. Found from 8th 

 December to March."— F. C. W. 



The antennae of the alate $ have the basal segment larger than the second, the third 

 the longest, with 21-25 sensoria along its whole length ; the fourth is a httle longer 

 than the fifth and has two sensoria, the fifth a subapical one ; basal area of the sixth 

 nearly half as long as the flagellum ; all segments faintly imbricated, flagellum 

 striated. Cornicles with marked hexagonal reticulation on apical half, then the 

 reticulations gradually spread out laterally, until at the base the cornicle has linear 

 ornamentation. Cauda globular. In the apterous female there are no sensoria 

 on the third or fourth segments ; hairs long, chiefly on one side of each segment ; 

 fourth and fiith segments often nearly equal, now and then the fifth a httle the shorter. 

 Cornicles as in alate female. The femora somewhat enlarged ; legs with longish 

 hairs in both forms. 



These Egyptian specimens exactly agree with the European C. popuU, except that 

 in the latter I have not been able to detect the two sensoria on the fourth antennal 

 segment of the alate female. 



Callipterus ononidis, Kalt. (figs. 25, 26). 



Aphis ononidis, Kalt. 

 Chaitophorus ononidis, Koch. 

 Myzocallis ononidis, Pass., Ferrari. 

 Chaitophorus macidatus, Buckton. 

 Callipterus trifolii, Monell. 



Kaltenbach, Ent. Zeit., iii, p. 173 (1846) ; Koch, Die Pflanz, p. 5, fig. 7 (1857) ; 

 Passerini, Aphid. Ital., p. 53 (1863) ; Ferrari, Aphid. Liguriae, p. 75 (1872) ; Buckton, 

 Ind. Mus. Notes, iv, p. 277, pi. xvii, fig. 1 (1899) ; Monell, Can. Ent., p. 14 (1882) ; 

 Williams, Spec. Bull. 1, Univ. Nebr. Dept. Ent., p. 8 (1891) ; Osborn, Proc. Iowa Ac. 

 Sci., i, pt. 2, p. 129 (1892) ; Osborn and Sirrine, Proc. Iowa Acad, Sci., i, pt. 3, p. 98 



