Scale Insects of British Guiana. 313 



identified. Whatever it may have been, it is no Orthe- 

 zia. When I read your letter, before I looked at the 

 inse6ls, I hoped they might prove this species, which 

 was imported into Kevv Gardens from the Seychelles on 

 palm leaves, but, at the time, for fear of introducing a 

 pest, all the plants were carefully destroyed." 



Explanation of Plates. 



PLATE I. 



Fig. 1. Orthezia insignis, adult female magnified, also 



with a plan of the natural size. 

 Fig. 2. Vinsonia stellifera, female, mature. 



„ 2a. „ ,, female, immature. 



Fig. 3. Ceroplastes (vinsoni ?), female, dorsal view. 



,, 3«. ,, „ ventral view. 



Fig. 4. Ischnaspis filiformis, female. 



PLATE II. 

 Fig. 1. Lecanium mangtferas. 

 ,, \a. ,, ,, part of the fringe, more 



highly magnified. 

 Fig. 2. Aspidiotus personatuSy dorsal view. 

 „ 2a. ,, „ side view. 



Fig. 3. Planchonia fimbriata. 

 „ 4. Diaspis cymbidii, female scales. 

 ,, 5. „ ,, male scales. 



„ 50. „ ,, male scale more highly mag- 



nified. 



R R 



