OF THE FARM AND GARDEN. 



249 



c). She is about .04-inch long, generally spherical 

 in shape, of a dull-orange color, and looks not unlike 

 an immature seed of the common purslane. At times,, 

 by the elongation of the abdomen, she is more or 

 less perfectly pear-shaped. Her members are all dusky, 

 and so short, compared to her swollen body, that she ap- 

 pears very clumsy, and undoubtedly would be outside of 

 her gall, which she never has occasion to quit, and which 



Fig. 152. GRAPE PHYLLOXERA LEAF-GALL TYPE. 



a, &, Newly-hatched Larva, ventral and dorsal view ; c. Egg ; cl, Section of Gall , e, 



Swelling of Tendril ; f, g. h. Mother Gall-louselateral, dorsal and ventral 



views; i, her Antenna; j, her two-jointed Tarsus. Natural sizes 



indicated at sides by email circles. 



serves her alike as dwelling house and coffin. More care- 

 fully examined, her skin is seen to be shagreened or mi- 

 nutely granulated and furnished with rows of minute 

 hairs. The eggs begin to hatch, when six or eight days 

 old, into active little oval, six-footed beings, which differ 

 from their mother in their brighter yellow color and more 

 perfect legs and antennae, the tarsi being furnished with 

 long, pliant hairs, terminating in a more or less distinct 

 globule. In hatching, the egg splits longitudinally from 

 the anterior end, and the young louse, whose pale-yellow 



