OHIONASPTR. 179 



Habitat. On Cycas revoluta at the Royal Botanic 

 Gardens, Kew. 



Distribution. Chiefly confined to cultivated palms 

 in Europe and in the United States of America, but so 

 far as I have been able to ascertain is not an abundant 

 species. 



EXPLANATION OF THE PLATES. 



PL XV, fig. 1. Insects natural size in situ on por- 

 tion of leaf of Cycas.. 



Fig. 2. Puparium of adult female. X 15. 

 Fig. 3. Puparium of immature female with plant 



filaments attached, x 15. 

 Fig. 4. Puparium of male. X 20. 

 Fig. 5. Adult female after treatment with potash. 



X 45. 

 Fig. 6. Rudimentary antennas of adult female. 



C X 600. 

 Fig. 7. Posterior spiracles, and glands of adult 



female. X 600. 



Fig. 8. Anterior spiracles of adult female. X 600. 

 PL XVII, fig. 3. Pygidium of adult female. X 250. 

 PL XVIII, fig. 6. Margin of pygidium of adult 

 female. X 600. 



GENUS CHIONASPIS (Signoret). 



The form of the female puparium is elongate, and 

 either pyriform or mytiliform, with the exuvias at the 

 anterior extremity. That of the male is elongate, 

 tricarinate, and composed of a close white felting, with 

 the larval exuvias terminal. The second exuviae are 

 invariably covered by secretion. The puparia in 

 both sexes of Cliionaspis salicis are typical of the 



