HICKORY. LEAVES — LITTLE HICKORY APHIS. 163 



The winged Motii measure* from 0.G5 to 0.80 in length to the tip of its ab- 

 domen and the expanded wings are 1.70 to 2.20 across, the females being 

 larger than the males. It is of a pale ochre yellow color, hairy above, the 

 abdomen on its under side covered with scales of a whitish and somewhat sil- 

 very appearance, with a row of tawny spots in the middle in the female; a 

 band in front between the eyes, two dots on the neck and the inner edge of the 

 shoulder covers tawny; eyes spotted with black; antennae three-fourths the 

 length of the body, tawny yellow, with two rows of teeth along their inner 

 sides, which are short in the female, and in the male long and comb-like. Fore 

 wings long and narrow, somewhat pointed at their ends, nankin yellow freckled 

 with tawny yellow atoms, and with the veins and a ring surrounding each of 

 the spots tawny yellow; spots mostly round or oval, white and somewhat 

 transparent, arranged in three rows extending obliquely across the wings pa- 

 rallel with the hind margin, each row having one spot between each of the 

 veins, the number being eight in the two hindmost rows and six in the forward 

 one; the third spot in the middle row the largest; the forward row situated 

 half way between the middle one and the base, with two additional spots be- 

 hind and two forward of it, and a large irregular spot upon the inner margin 

 at its base; under side similarly colored and marked. Hind wings whitish, 

 thin and semi-transparent, without spots. The spiral tongue is almost as long 

 as the antenna}. The feelers project horizontally forward and are clothed with 

 hairs similar to those upon the head, their apical joint being covered with scales 

 only. 



On the under surface of the leaves, sucking their juices; small flattish pale 

 yellow lice, their antennas with black rings. 



The Little Hickory Aphis. Aphis Caryella. 

 The extensive genus Aphis, several species of which we have 

 had occasion to treat of in the preceding pages, is well character- 

 ised by having three oblique veins crossing the disk of the fore 

 wings, the third one of which is twice forked, and seven-jointed 

 antennse. The species, however, which are embraced in this 

 genus admit of being divided into smaller groups. This has beezi 

 shown in a very able manner by M. Kaltenbach, whose arrange- 

 ment is reproduced by M. Amyot in his valuable review of these 

 insects in the Annals of the Entomological Society of France, 2d 

 series, v. 437 — 480. Eut none of the sections which these authors 

 define appear to present differences of sufficient value to warrant 

 their elevation to the rank of genera, although Mr. Curtis in his 

 British Entomology has proposed to separate those having the 

 antennse shorter than the body, and the beak arising from the 

 lower part of the head instead of between the base of the fore 



