158 
Transactions of the Boyal Society of South Africa. 
Habitat : On Opuntia monacantha, Cape Province, Natal, and Orange 
Free State ; common in districts where the food-plant abounds. This 
species has been recorded on one occasion on Nopalea cochinelifera, when 
found growing in close proximity to infested 0. monacantha at Pretoria 
(1913). 
Collection No. : 38. 
43. Coccus iNDicus Green. 
(Plate XXII., Fig. 44.) 
Coccus indicus Green, Mem. Dept. Agric. Ind., 1908, ii., 2, p. 28. 
Coccus cacti var. ceylonicus Green, Ind. Mus. Notes, iv., 1, p. 7, 1896. 
Nom. nud. 
Coccus indicus Green, Journ. Econ. Biol., p. 84, 1912. 
" Adult female subglobular ; purplish-red, the colour concealed 
beneath a mass of white mealy tomentum. 
Eyes moderately prominent, rounded, not densely chitinous. 
Antennae short, tapering gradually to extremity ; 7- jointed (rarely 
6-jointed, through the complete confluence of 3rd and 4th joints) ; all the 
segments broad and short, much broader than long, with the exception of 
7th, which is irregularly subglobular — the breadth approximately equal to 
the length ; some stout curved hairs on terminal segment. Length of 
antenna 0-12 to 0-16 mm. Breadth of basal joint 0*06 to 0*08 mm. 
Legs small, moderately stout ; femur and trochanter together 0*16 to 
0'2 mm. ; tibia 0*06 to 0'09 mm. ; tarsus (minus claw) slightly longer than 
tibia, 0-08 to 0-1 mm. 
The dermal pores, which are such a conspicuous feature in C. cacti, 
are small and inconspicuous in this species, and are without thickened 
chitinous rims. They occur singly and in small clusters of 3 or 4 pores ; 
rarely clusters of 5 or 6 occur. 
The truncate spines are very numerous and conspicuous — even under 
a comparatively low magnification. They are short and stout, cylindrical 
and parallel-sided, with very broadly expanded bases which give a charac- 
teristic appearance to the spines of this species. The base is usually as 
broad as, and sometimes slightly broader than, the total length of the 
spine. They are scattered thickly and evenly over the whole dorsum and 
on the ventral marginal area of the abdomen. The largest spines are 
grouped on the abdominal margin. 
Length of body (under compression) of Indian examples varies from 
2*5 to 5 mm. An average of 19 examples gives a dimension of 
3*93 X 3*16 mm. Ceylon examples are slightly smaller, ranging from 
