559 



ON SOME NEW SPECIES OF COCCID^E FROM AUS- 

 TRALIA, COLLECTED BY W. W. FROGGATT, F.L.S. 



By E. Ernest Green, F.E.S., Government Entomologist, 

 Ceylon. 



(Communicated by W. W. Froggatt, F.L.S.) 



(Plate xxxiii.). 



Rhizococcus viridis, sp.nov. 



Living insect green (Froggatt). Dried examples and those 

 preserved in alcohol dark purplish-brown. Strongly convex above, 

 with deep transverse corrugations. Under side somewhat concave, 

 the margins clasping the twig upon which the insect rests. 

 Oblong-oval to broadly oval according to age. Divisions of 

 abdominal segments strongly marked, the margins of the four 

 terminal segments produced into rounded lobes: the anal lobes 

 small, but strongly chitinous and darker coloured (fig. 1). 

 Antennae with six joints only, the 6th longer than the preceding 

 two together (fig. 2). Antennal formula 6, (1, 3), 2, (4, 5). Legs 

 well developed; normal. Tarsus nearly as long as tibia; the two 

 together about equal to femur and trochanter combined. Digitules 

 fine hairs. Spiracles rather small and inconspicuous. A nal ring 

 with six hairs. Derm with minute circular trilocular pores (fig. la) 

 and scattered longish sharply-pointed spines on both dorsal and 

 ventral surfaces, larger and more crowded on margins of terminal 

 four or five segments. Caudal setse (on anal lobes) comparatively 

 short, only three or four times the length of adjacent spines. 

 Total length 2-50 mm.; breadth 2-0 mm. 



