TWO NEW MYRMECOPHILOUS APHIDES FROM ALGERIA. 31 
projecting beyond the body, femora much thicker and shorter than 
the tibiae; tarsi longer than in the two front pairs; the basal segment 
of the feet, small; tibize and tarsi hairy, hairs very fine and short. 
Length.—3 mm. 
Inmature viviparous female.-—Colour varying from pale yellow 
to dull brownish grey. Legs pale yellowish brown. Antennex 
with the last two segments pale brown; two basal segments short, 
about equal length, the basal one broader than the second, the third 
the longest, about as long as the fourth and fifth, which are equal, a 
sensorium on the apex of the fourth and one at the base of the short 
blunt nail on the fifth, with two to four smaller ones surrounding 
Forda rotunda, nov. sp. 
A. Head of mature apterous female; c, antenne; c!, further enlarged apex ; 
b, proboscis; b!, mandibles; b?, maxille; a, eye; al, eye further enlarged. B. 
Head and antenn# of immature female. D. Front tarsus. E. Proboscis. F. 
Lateral view of cauda. G. Hind tarsus. 
it, all the segments with small hairs. Eyes small and black, not so 
projecting as in the adult. Proboscis reaching just to the third 
cox, of similar form to the adult. Legs longer in proportion than 
the adult, well projecting from the body, otherwise similar. Cauda 
rounded, hairy, hairs long and curved apically. 
Length.—2 to 2°5 mm. 
Habitat— Hammam Meskoutine, EH. Algeria. 
Time of Capture.—April 3rd, 1913. 
Notes.—One mature female and four immature ones taken 
in ants’ nests (T’apinoma erraticum). 
There is no doubt that these are all one species, although the 
mature form looks very different, its swollen appearance, its white 
kid-like upper surface and flat brown venter with marked segmen- 
tation is very characteristic, the younger forms are more Forda- 
like, whilst the adult approaches a Tycheoides in appearance but 
the antenna are Forda-like. The hairy cauda is prominent in all. 
The types of both species have been placed in the National 
Museum at South Kensington. 
