BY WALTER W. FROGGATT. 261 



This is not a common species, and individuals are generally 

 found singly upon leaves. Walker's two specimens in the British 

 Museum come from Tasmania Mr. Lea has lately sent me 

 several worn lerp-scales from the neighbourhood of Hobart. 

 When fresh the lerp is one of the most beautiful Australian 

 forms, but the thick covering of filaments soon wears off when 

 exposed to the weather. 



Genus Lasiopsy'lla, n.g. 



Head similar to that of Creiis, with a short tooth on sides of 

 eye, and long slender antennae. Thorax large, convex; pronotum 

 short, sharply rounded in front; dorsulum large, arcuate in front, 

 broadly rounded on sides. Wings nearly thrice as long as broad, 

 with an inner or false costal nervure running close and parallel 

 to costal nervure, merging into it at shoulder; stigma wanting; 

 radius short, nearly straight, stalk of subcosta a little shorter 

 than stalk of cubitus; upper fork of lower cubitus very long, 

 curving in at centre Apex of hind tibia; dilated, and bearing 

 three fine black spines on the edge. 



Lasiopsylla rotundipennis, n.sp. 

 (Plates xi., fig. 2; xii., fig. 4; xiv., tig. 11). 



Lerp. — Large, flattened, thin white scales, up to nearly \ inch 

 in diameter, irregularly rounded, arcuate at the hinge, attached 

 to the leaf by a small hinge from which the scale grows in con- 

 centric rings, giving it a reniform shape; convex in centre, with 

 outer margin pressed close to the leaf; on the leaves of Eucalyptus 

 m°lliodora, E. polyanthema and several other allied species; some- 

 times single or half a dozen overlapping each other. 



Larva. — General colour dull yellow, tinged with pink on abdo- 

 men and legs; antenna? barred with black; two large blotches on 

 head, and a double row of impressed black spots running to tip 

 of abdomen where they come to a v-shaped point; anal tubercle 

 black. Head truncate, slightly rounded in front, forming with 

 thorax a solid piece widest at base of abdomen; eyes very small; 



