EXPLANATION OF PLATE. 



Fig. 1. Ceroplastes cerifertts ; twig with three wax-covered females, nat. size. 



Fig. 2. Phromnia marc/inella ; a, imago natural size ; b and c larvae, natural size and 

 enlarged, in each case divested of tbe flocculent matter with which they are 

 ordinarily covered ; d, gland like organs situated at the extremity of the 

 abdomen in the larva, enlarged ; e, leaf covered with dried larval skins as 

 they appear before being divested of their flocculent coverings, nat. size ; 

 f., leaf covered with the sugary secretion emitted by the larvae. 



