3 1 z J^ecaniincB, 



LECANIUM MARSUPIALE, sp. nov. 

 (Plate LXXV.) 



Adult 9 {figs. I, 2), very flat and broad ; posterior half widest ; extremities 

 either rounded or bluntly pointed. Median area deep reddish brpwn, mottled 

 with darker brown. A broad, greenish, marginal zone, sharply demarked from 

 the median reddish area. Eyes minute, black, close to inner edge of marginal 

 zone. Marginal hairs, spiniform, sharply pointed. Stigmatic clefts {fig. 5) 

 conspicuous ; the margin densely chitinous and vertically thickened, its edge 

 closely studded with glandular pores. There are no spines in the centre of the 

 cleft ; but a single stout-pointed spine guards the cleft on each side. A dermal 

 fold from the ventral part projects beyond the dorsal margin, its edges incurved 

 and indurated, forming a chitinous lip on each side of the cleft. Scales of anal 

 operculum {fig. 6) pointed at extremity ; the outer angle evenly rounded ; outer 

 edge longer than base. The operculum is surrounded by a sharply defined 

 densely chitinous zone. Derm with small scattered translucent pores, and 

 some irregular nebulous pale streaks on the marginal area. Under surface 

 {fig. 3) with a deep pouch on each side of abdomen, in which the young Iarv« 

 are sheltered for some time after birth. Limbs so closely pressed into surface 

 of body as to be practically invisible on the living insect. Antenna {fig. 7) 

 obscurely eight-jointed, the division between fourth and fifth joints usually in- 

 complete. Antennal formula 3, (i, 8), 6,'(2, 4, 5, 7), or 3 (1, 6, 8), (2, 4, 5, 7). 

 Length of well-grown example 9 mm. Breadth 6 to 6.50 mm. 



The early adult female, before gestation {fig. 4), is very thin and trans- 

 parent, the median area mottled with pale reddish brown. When in position 

 on the leaf, it is scarcely visible, except by its glistening surface. Delicate 

 glassy filaments are secreted from the marginal hairs. 



Adult i {Jig. 10) of normal form : comparatively large. Thorax dark 

 castaneous, highly polished, except mesal notal plate and scutellum which are 

 dull. Head blackish brown. Ocelli large, purplish black : four on upper and 

 four on under surface of head {fig. 1 1). Eyes minute, lateral. Abdomen dull red- 

 dish purple, bearing a pair of very long fine opaque-white caudal filaments. 

 Antennffi and legs brownish purple. Wings ample ; highly iridescent ; costal 

 nervure and costal area purplish pink. Length (including genital sheath) 

 2.25 mm. 



Male puparium {fig. 9) oval : median area convex, covered by a broad 

 opaque-white elevated pad ; marginal zone opaque-white, except at posterior 

 extremity, where it is glassy and translucent ; a narrow space between marginal 

 and median areas tinged with brownish purple; scale divided into 12 plates. 

 Length 3.50 mm. Breadth 2.25 to 2.50 mm. 



Fully grown male larva {fig. 8) bright reddish fulvous, with a dense cushion 

 of opaque-white wax on the median longitudinal area. Raised white lines— 



