ASPIDIOTtJS : SYNOPSIS OF SPECIES. 81 



the pygidium, as will be seen on studying the figures on 

 Pis. II, IV, VII, and X. Chiefly by the characters of 

 these organs Professor Berlese and Mr. Cockerell have 

 established several new sub-genera. Such a division is 

 very convenient for working out all the known species ; 

 I do not, however, deem it advisable to subdivide the 

 comparatively few species found in this country. 



SYNOPSIS OF THE SPECIES. 



A. Pygidium without circumgenital glands. 



a. $ with a large cephalic projection of the body; 

 lobes rudimentary. Puparium obconical, black- 

 ish. 



(i) .... PERSONATUS. 

 I). Pygidium with three pairs of rudimentary lobes ; 

 dorsal pores large. Puparium high convex, 

 brown ; exuviae black. 



(n) .... BROMILI^. 

 I) b. Puparium flat convex ; exuviae dull orange 

 yellow. 



(111) . . . . AUKANTII. 



c. Pygidium with one pair of well-developed lobes, 

 margin of same deeply incised. Puparium high 

 convex ; exuviae yellow. 



(iv) .... CAMELLIA. 



B. Pygidium with four, rarely with five, groups of 



circumgenital glands. 



a. Short serial group of lateral dorsal pores absent. 

 Puparium reddish-pink in the young, smoky 

 grey in the old examples. 



(v) .... ZONATUS. 



C. Pygidium always with five groups of circumgenital 



glands. 



a. Serial group of dorsal pores present. Puparium 

 flat convex, grey with a darker central zone. 



(Vl) . . OSTRE^FORMIS. 



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