52 SCIENCE BULLETIN, No. 18. 



Genus XXVIII. Lecaniodaspis, Targioni-Tozzetti. 



Bull. Soc. Ent. Ital., vol. i, p. 261. 1869. 



Prosopophora, Douglas, Eiit. Monthly Magazine, vol. xxviii, p. 261. 1892. 

 „ Maskell, Ent. Monthly Magazine, vol. xxix, p. 105. 1893. 



This contains the Australian species which Maskell described under the 

 generic name of Prosopophora, and are now included in the above group. 

 Maskell, when defining his species from Australia, somewhat modified 

 Douglas's genus to make them fit into Prosopophora. 



The members of this genus are closely allied to the Asterolecanimn in the 

 form and structure of the female tests, but the delicate fringe of glossy fila- 

 ments is absent round the margins. In the adult female the antennae, not 

 more than eight-jointed, are well developed; anal tubercules small; ano- 

 genital ring with more than eight hairs ; legs aborted ; mentum monomerous, 

 and in most species a terminal orifice in the enveloping test. 



The species is chiefly confined to America and AustraUa; out of the 

 twenty-three species known ten are described from Australia. 



Lecaniodaspis acacice, Maskell (Fig. 38). 



Prosopophora acacice, Trans. N. Zealand Institute, vol. xxv, p. 225, pi. 14, figs. 1-7, 



1892. 

 Prosopophora acacice. Fuller, Trans. Ent. Soc, London, p. 455. 1899. 



The type specimens came from South Australia on the twigs of Acacia 

 caiamifolia, but it has a very wide range over Austraha, and has been foimd 

 on a number of different species of Acacia. 



The female test is yellowish brown, waxy, smooth, opaque, slightly convex, 

 irregularly rovmded, often with the ventral portion embedded in the bark of 

 the twig ; with a small anal orifice at the apex. Length f of an inch. 



The adult female is of a brown colour and fills the test ; the antennae are 

 short, thick, and apparently composed of four joints, terminal one with a few 

 hairs; feet aborted; anal tubercules bearing two or three spiny haiis; the 

 epidermis with many spinnerets and figure-of-eight orifices. 



The male test is white to pale yellow, rugose, waxy, oval, flattened some- 

 what, impressed with a median ridge and a row of short transverse lines on 

 either side; the apex flattened or truncate with a rounded flap or lid of 

 looser texture than the main portion. Length oV of an inch. The female 

 tests are often half buried in the tissue of the bark, aborting the infested 

 twig and forming regular pits all over it. 



195. Lecaniodaspis acacicB. Cat. Coccidse, p. 54. 



