THJS VICTORIAN NATURALIST. 11 



capitate spinneret ducts. Pygidium without either lobes or 

 squames. Dorsal series of spines rather long and conspicuous, 

 with thickened bases. Ventral series minute. A marginal dorsal 

 series of 4 or 5 oval pores with conspicuously thickened rims, in 

 connection with cylindrical ducts. Circumgenital glands in five 

 distinct groups, the median group consisting usually of only 2 

 orifices, upper and lower lateral groups each with 4 or 5. Anal 

 anterior to genital orifice. The median dorsal area of pygidium 

 rather distinctly longitudinally striated. Length, after oviposition, 

 about 0.50 mm. 



The second pellicle, which constitutes the principal part of the 

 puparium, has, at the posterior extremity, a median pair of lobes, 

 their inner edges straight and contiguous, the free edge sloping 

 and notched. In older examples the two lobes seem to be 

 almost continuous, together forming a semicircle. 



Fig. 2. — Pygidium of Fiorinia lidgetti, Green. Adult female. 

 (Much enlarged.) 



Habitat. — On Acacia decurrens, Myrniong, Victoria, Aus- 

 tralia. Collected by Mr. James Lidgett, whose name I have 

 taken the liberty of utilizing for the species. 



A peculiarity of the species is the manner in which the scales 

 are disposed, transversely, on the bark of the plant. Maskell 

 notes the same habit in his F. acacice, but in that species the 

 second pellicle is deep black, and the pygidium of the adult 

 female is said to have " a single median floriated lobe." In 

 examples of F. acacia that I have examined the median lobe 

 might be more correctly described as bicuspid, the cusps 

 divergent (vide fig. 3). 



Fig. 3. — -Abdominal Extremity of Fiorinia acacia, Mask. (Much enlarged.) 



F. expansa, Mask., casuarince, Mask., signata, Mask., tenuis, 

 Mask., and bambusce, Mask., are all without lobes on the 



