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THE ENTOMOLOGIST 
Vou. XLIX.] MARCH, D316: [No. 634 
NOTES ON APHIDIDA FOUND IN ANTS’ NESTS. 
By Frep. V. THeopaup, M.A. 
A satu collection of Aphidide, sent me by Mr. W. C. Crawley, 
found in ants’ nests in and around Porlock, Somerset, in 1915, 
is of special interest on account of containing a Macrosiphum 
which has not been described, and another Aphid approaching, 
on the one hand, the genus Hyalopterus, Koch, and, on the other, 
Van der Goot’s genus Longicaudus, but which cannot be placed 
in either. For this I propose the generic name Hyalopteroides. 
The species of J'ycheoides is so close to Passerini’s 1’. 
eragrostidis that I have included it under that species. 
Macrosiphum myrmecophilum, nov. sp. 
Apterous Viviparous Female.—Bright green, antennze not quite 
‘as long as the body, arising from large frontal tubercles; basal 
Macrosiphum myrmecophilum, nov. sp. 
A. Head and antenna; al. Rostrum; B. Cornicles and cauda of apterous 
female; C. Head of nymph; D. Cauda of larva. 
segment much larger than the second; third longer than the fourth, 
with one sensorium near the base; fourth a very little longer 
than the fifth, the latter with a sub-apical sensorium; sixth a little 
longer than the fourth and fifth, its basal area about one-fourth the 
length of the flagellum ; on the first to fifth a few short, pale hairs, 
ENTOM.—MARCH, 1916. ) 
