282 FRED. V. THEOBALD. 



Apterous viviparous female. — Bright lemon-yellow, slightly mealy, with black 

 cornicles. Head lemon-yellow ; eyes black. Antennae shorter than the body ; first 

 and second segments lemon-yellow ; third and fourth paler ; fifth pale, with smoky 

 apex ;• sixth smoky ; the first a little wider than second ; the third longer than 

 fourth, not quite so long as the sixth ; fourth about as long as the fifth ; the basal 

 area of sixth about one-third the length of the flagellum ; third to sixth faintly 

 imbricated. Proboscis long, reaching past the third pair of legs, pale, acuminate ; 

 the apical segment rather narrow, about twice as long as the penultimate. Thorax 

 and abdomen lemon-yellow. Cornicles dull black, thick, somewhat expanding 

 basally, a little longer than the third antennal segment ; curved outward ; imbricated ; 

 variable in thickness, some being very much thicker than others, reaching about to 

 the level of the cauda. Cauda shaded to dusky ; much shorter than cornicles ; 

 almost triangular ; slightly spinose, with three pairs of lateral hairs and one or two 

 subapical dorsal curved ones. Legs moderately long and thin ; femora lemon- 

 yellow ; tibiae pale, with dusky apex ; tarsi dusky ; coxae and trochantas lemon- 

 yellow. Venter lemon-yellow. A pale papilla on each side of pronotum ; one 

 between the meso- and meta-thoracic legs and one between the cornicles and cauda 

 on each side. Skin reticulate. Length, 1*2-1 "6 mm. 



Nymph. — Lemon-yellow, slightly mealy. Antennae with first and second 

 segments of the same colour as the head ; third and fourth pale yellow ; fifth very 

 pale yellowish ; tip dusky ; sixth dusky. Eyes black ; ocelli dusky. Prothorax of 

 the same colour as the head, slightly mealy. Metathorax lemon-yellow, slightly 

 mealy. Abdomen lemon-yellow, reticulate. Cornicles black. Cauda lemon-yellow, 

 with dusky apex. Wing buds yellow. Legs pale yellowish ; tips of tibiae and tarsi 

 dusky. 



Egypt: Cairo, 10.vi.10 (T. Brown, per F. C. Willcocks). 



Food-plant. — Buddleia madagascariensis. 



Described from a few alate females and many apterae. In general appearance 

 this species resembles Aphis nerii and Aphis asclepiadis, but it can be distinguished 

 at once by the shorter antennae and the marked sensorial structure in the alate 

 female ; also by the shorter and thicker cornicles, the much shorter cauda, and the 

 much longer proboscis. Although presenting a general resemblance to A. nerii, 

 it is very distinct. 



It occurs in great numbers on the leaves of the Buddleia. 



8. Aphis mathiolae sp. nov. (fig. 8). 



Alate viviparous female. — Head dusky olivaceous to blackish ; eyes very dark 

 brown, almost black. Antennae shorter than body ; two basal segments olivaceous ; 

 third pale at base, dark at apex ; fourth to sixth black, apex of latter slightly paler 

 than base ; first segment a little broader and very slightly longer than second ; the 

 third longer than fourth and about as long as sixth, with 13-16 round sensoria, of 

 unequal size, over its whole length ; fourth with 3-5 sensoria, a little longer than 

 fifth ; the latter may have an extra sensorium in addition to the normal subapical 

 one ; sixth about as long as 4 + 5, its basal area about .one-third the length of the 

 flagellum ; segments 3-6 imbricated. Proboscis dusky at apex, reaching to or just 



