DIASPIS CALYPTKOIDES. 159 



several days to the open air in the fruiterer's shop in 

 the month of April, the males readily hatched out 

 when the fruit was placed in a temperature of about 

 80 F. I have now quite recently received it on pine- 

 apple cultivated in the London district, where it was 

 collected by Mr. Lovell Heays. 



Distribution. Said to be common and destructive 

 to pineapple (Ananassa sativa) under cultivation in 

 Europe. Prof. Comstock found it in a conservatory 

 at Washington ; but I do not know that it has been 

 found in a wild state in the United States. 



EXPLANATION OF THE PLATES. 



PI. XIII, fig. 1. Insects natural size in situ on portion 

 of pineapple (perianth). 



Fig. 2. Puparium of adult female. X 20. 



Fig. 3. Adult female at period of gestation. X 35. 



Fig. 4. Adult female after parturition. X 35. 



Fig. 5. Puparium of male. X 20. 



Fig. 6. Male. X 35. 



Fig. 7. Ova. 



PL XVI, fig. 1. Pygidium of adult female. X 250. 

 PL XVIII, fig. 1. Margin of pygidium of adult female. 

 X 600. ' 



DIASPIS CALYPTEOIDES (Costa). 



(PL XIII, figs. 11, 12; PL XVI, fig. 3 ; 

 PL XVIII, fig. 3.) 



Diaspis calyptroidcs, Costa (1827) ; Faun. Nap., pi. 



vi, fig-' 2. 



Aspidiotus echinocacti, Bouche; Schadl. (1883), 53. 

 Diaspis calyptroides (Costa), Signoret; Essai, p. 116. 

 ? Diaspis cacti, Comstock ; Rept., 1883, p. 91, fig. 11. 



