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6. Selandria rubi, Harris. The Raspberry Saw-fly. 
Head small, globular, pale green tinged with yellowish, and having 
the usual dark eye-spots. Mandibles tipped with brown. The body 
is dark green, with numerous green tubercles, from which proceed 
fleshy-looking, green branches which are spined. There are eight 
tubercles on most of the segments, arranged in transverse rows. 
Feet and pro-legs green, twenty-two in number. Length, one-half 
of an inch. 
When full grown they burrow beneath the ground and form small 
oval cocoons of earth. 
These larvae feed on the leaves of the raspberry. 
7. Selandria til^:, The Linden Saw-fly. 
The larvae feed on the linden. 
8. Selandria vitis, Norton. 
Slender, thickest before and tapering behind. Head and tip of 
body black; body light green, paler before and behind, with two 
transverse rows of small black spots. Under side of body yellowish. 
After the last moult they are almost entirely yellow. Length, five- 
eighths of an inch. Feet, twenty, often apparently twenty-two. 
They are social, feeding side by side in companies of a dozen or 
more, on the leaf of the grape-vine, and are two-brooded, trans¬ 
forming in small earthen cocoons beneath the surface of the ground. 
Sometimes they become very numerous and destructive. 
9. Selandria juglandis, Fitch. 
Covered with a coating of flocculent, snow-white meal which rubs 
off at the slightest touch. Body cylindrical, tapering slightly from 
head to tail. Head shining, pale yellow, with a large black spot 
on each side. Feet dull pale yellow. Naked body blackish. Twenty 
footed; length, nearly one-half inch. 
They feed on the leaves of the butternut. 
10. Selandria cerasi, Harr. 
At first they are white but soon a viscid, olive colored matter 
oozes out of the skin and covers their backs. Head dark chestnut, 
small, and entirely concealed under the fore part of the body. Body 
largest before and tapering behind. After the last moult they have 
a clean yellow skin, and the marks between the segments and the 
head can be distinctly seen. Length of full grown larvae about nine- 
twentieths of an inch. Number of feet, twenty. 
These worms feed on the upper side of the leaves of the pear and 
cherry. 
11. Dolerus arvernsis, Say. 
The perfect insect is blackish violaceous; thorax rufous, a spot 
before and a triangular spot behind, black. Length, more than seven- 
twentieths of an inch. 
Found feeding on the willow in April. 
