238 Agbioultueal Experiment Station, Ithaoa, N". Y. 



like obliquely pointed instrument. Further manipulation with a knife 

 or needle will show that which appears to be a single blade is really 

 made up of two similar blades (Fig. 9, b) lying close together. In 

 short, the female is provided with a comparatively long thin two-valved 

 blade-like ovipositor capable of cutting quite a slit in the tissues of a 

 plant; and that is really what does happen. 



For the eggs are to be found in slits cut lengthwise into the stems of 

 the plants, extending through the bark, wood, and nearly half way 



Fig. 11. — Curraut btetn shewing white egg clusters, cousiderably enlarged. 



through the pith (Fit. 10). The slits vary in length up to one-eighth 

 of an inch, depending upon the number of eggs placed therein. The 

 usual number is 6 or 8 ; it varies, however from 2 to 14. The eggs lie 

 closely packed together in the slit, as shown in figure 10, with their 

 out ends projecting slightly above the bark. 



