ASPIDIOTUS ZONATUS. 97 



clad with hairs, and the tarsus (PL VI, fig. 7) has a 

 fine sharp claw and four knobbed hairs. Stylus about 

 three fourths the length of the body. 



Larva pale yellow ; with six-jointed, funiculate 

 antennae like those of A. ostreaeformis. Caudal setae 

 long ; between them a pair of short spines. Mesal 

 lobes well developed ; margin beyond them with four 

 or five tuberculate projections, each bearing a minute 

 spine. 



Ova yellow. 



Habitat. On oak (Qnercus robur) ; at High Legh 

 (Gillanders), and Eaton in Cheshire; Bearsted (Green), 

 Orpington and district, Chislehurst, Frant Wood 

 (Saunders) ; and Lewisham (Douglas), in Kent. I find 

 it most abundant in Cheshire, but it never occurs in 

 such numbers as the preceding species. Mr. Watkins 

 has sent me the species from Painswick, but I have 

 found it very sparingly elsewhere in Gloucestershire. 



This species is so closely allied to A. ostreseformis 

 that a comparative statement is necessary. The fol- 

 lowing table gives the salient characters of each : 



$ A. ostre&formis. ? A. zonatus. 



Body highly chitinised. Body not highly chitinised. 



Circumgenital glands al- ; Circumgenital glands usu- 



ways in 5 groups. ally in 4 groups. 



Series of basal pores near None. 



base of pygidium. 



Lobes in two pairs. Lobes in 3 pairs. 



Spines long. : Spines short. 



$ antennae with 8 knob- <$ antennae with 4 knob- 

 bed hairs at apex. bed hairs at apex. 



Distribution. Widely distributed, and common in 

 many parts of Europe. 



Habits. Egg-laying takes place early in May, and 

 although I have not observed the larvae, I should 

 imagine they hatch soon afterwards, as the puparia are 



