6 The Bulletin. 



been given by Mr. R. W. Collett, now Superintendent of the State Test 

 Farm at Swannanoa, Buncombe County. 



Description. The full-sized female scales (these are most often ob- 

 served) are about one-eighth of an inch long, narrow and brown in 

 color. They may be nearly straight, or curved— sometimes almost into 



Fig. 1. — Apple twigs moderately infested with Oyster- 

 shell Scale, shown slightly enlarged. Photo by 

 C. L. Metcalf. 



a half-circle. The front end of the scale — where the insect itself lies 

 beneath — is narrower than the binder end, which serves as a receptacle 

 for the great number of over-wintering eggs. The male scale is some- 

 what similar, but smaller and shorter. The shape of the scales has sug- 

 gested the common name of "Oyster-shell" for the species. _ There are 

 of course all degrees of abundance on infested trees, from single scales 



