452 On some Coccidse /ro?n Australia. 



opposite the stigmatic areas, are some stout dilated blunt 

 spines, flattened towards the ends (fig-. 3 h), two (rarely three) 

 at anterior point, one (rarely two) at the other point, placed 

 on dorsal surface. On the ventral snrface is an extended 

 group of ceriferous pores, directed towards the opening of the 

 spiracle. Derm with a large number of bituberculate spin- 

 nerets scattered over the surface and forming a more or less 

 continuous series on the margin. They are connected with 

 some remarkable tubular ducts, each terminating in a lateral 

 finger-like process. The connexion between the external 

 spinneret and the tubular duct is very indistinct ; but it can 

 be made out by careful illumination (see figs, ^h and 3c). 

 Anal aperture at base of cleft, surrounded dorsally by four 

 more or less confluent triangular chitinous plates (fig. 3 c), 

 the lower pair largest, with two stout spines near the apex of 

 each ; these plates do not meet to form a valve, as in typical 

 Lecaniina^ Anal ring with ten stout flattened hairs pro- 

 jecting into the cleft. Margin of body with a scattered 

 series of short spines, which increase in size near the anal 

 cleft. 



Diameter 1'50-1"75 millim. 



Newly hatched larva oval. Antenna 6-jointed, sixth 

 longest ; extremity abruptly narrowed and truncate, bearing 

 a longish fine hair. Anterior stigmatic area with two, poste- 

 rior with one stout spine. Anal aperture (fig. 3 d) surrounded 

 by chitinous plates as in adult. A long stout seta on each 

 side of the cleft, not attached to the chitinous plates, but 

 springing from a minute tubercle on the margin of the body. 



Hah. " On a small Leguminous shrub, collected at Birchip, 

 Victoria." (Lidgett Coll. no. 49.) 



The scales are thickly clustered on the twigs of the plant. 



Ptradeniya, Ceylon, 

 24th May, 1900. 



EXPLANATION OF PLATE XL 



Fig. 1. Mytilaspis indentata. Pygidium. 



Fiy. 2. C'tenochiton aj'uncarue. Antenna of female. 



Fi(/. 2 a. Ditto. Stigmatic area of adult female. 



lie/. 3, Birchippia unomula. Adult female, ventral view. 



Fig.'ia. Ditto. Antenna of adult female. 



Fig. 3 h. Ditto. Anterior stigmatic area of adult female. 



Fig. 3 c, Ditto. Extremity of abdomen, dorsal aspect. 



Fig. 3 d. Ditto, Posterior extremity of young larva. 



