TWO NEW MYRMECOPHILOUS APHIDES FROM ALGERIA. 29 
The marked characters of this genus are the antenne and 
the projecting long proboscis. 
The viviparous apterous female only known. 
Found in company with ants. 
_Rectinasus buxtoni, nov. sp. 
Apterous viviparous female-—Ochreous yellow to pale yellow and 
almost pearly white, pubescent; legs and antennze brown; proboscis 
black at the apex, brown to nearly the base in some, paler in others. 
Eyes black. Frons more or less porrected. Vertex convex to flat, 
broad, hairy. Antenne of five segments, the two basal ones small, 
of nearly equal length, the basal one somewhat the wider, the apex 
a. 
Rectinasus buxtoni, nov. sp. 
A. Head of apterous viviparous female; a, antenne; al, joint of first and 
second segments, showing spines a?; a*, apex of antenne; b, eye; c, labrum; cl, 
maxille ; c? and c3, mandibles; d, proboscis. 5B. Variations in head a, b, and c. 
C. Lateral tubercle. D. Labrum, d! apex further enlarged. 
of the first and base of the second with a-small dark, blunt, median 
projecting process, pointed towards one another, third segment long, 
fourth short, but longer than the second, fifth as long as the third, 
ending in a short, blunt nail, a small round sensorium at the apex of 
the fourth and a peculiar shaped one at the base of the nail on 
the fifth ; all the segments hairy, in some the antenne are nearly as 
long as the proboscis, in others shorter. Proboscis carried at a 
marked angle to the body, bent near the base, acuminate, the apex 
of the last segment, which is long and thin, black, hairy; setaceous 
mandibles and maxille long ; labrum moderately long, porrected, base 
with some hairs. The proboscis varies in length, usually about two- 
thirds the length of the body, but may be longer. Frons often porrected. 
