cocciD^. 329 



As the two preceding species are not very common except in one 

 or two special localities, it would be well for the student to study the 

 habits iand structure of an easily procurable and closely allied species 

 — viz., Aspidiotus ostreaiformis on plum, apple, pear, and cherry. 

 This species is very common in many parts of the country. 



In the event of this species not being procurable, the student may 

 find several species of Aspicliotus under glass, as in fig. 304 on Lap- 

 ageria, and fig. 305 on Stephanotis. 



(roim DiASPis. 



This genus has a circular female puparium, and the remains of the 

 larval moults lie between the centre of " scale " and its outer ed'^e. 



Fig. ZQi.—Scale of Aspidiotus mi Fig. 305.— &•«?« o/ Aspicliotus Fig. ZQ^.— Scale of Aula- 



Zc«/o/ Lapageria. mi Z«(/o/ Stephanotis. caspis rosa- on dorj-rose. 



The puparium of the male is elongated and strongly ridged, closely 

 resembling the puparium of Chionaspis. 



In this genus proper we have no arboreal species, and the species 

 on wild-rose, long known as Diaspis ros/e, has been named Aularaspis 

 (Diasp/'s) rosce by Cockerell, and Newstead has, somewhat reluctantly, 

 adopted the change. 



AuLACAsris {JJias/)i.<) kos.e (Bouche). 



This scale (tig. 30G) is fouml on the dog-ro.se (Bom ranina), and 

 sometimes on species of Ruhux (bramble). It is fairly common in 



