15 



climate. I have records of considerable damage to Aucuba 

 plants in Devonshire and the Isle of Wight. 



The genus Diaspia provides two species only : — 



D. rosae (Bouche). On cultivated and wild roses and on brambles 

 {Riibiis spp.). Female scale conspicuous, white, exuviae red- 

 dish. Male scales white, strongly tricarinate. Often very 

 abundant on the stems of cultivated roses, especially those 

 in sheltered positions, against walls, etc. 



D. carudi, Targ. On Jimii>eriis sp. (Royal Gardens, Kew) and upon 

 a variety of CupresRitH lairsouiana (m a nursery garden at 

 Ottershaw, Surrey). Scale inconspicuous, whitish, concealed 

 amongst the crowded leaflets of the plant. Though the 

 species has not yet been recorded from the wild Jnniperiis 

 cn)iinnmis, it very probably occurs upon our native plant. 

 The inconspicuous chaff-like scales are so well concealed that 

 they might be overlooked very easily. 



The genus Chionaspis is represented by a single species : — 

 C. salicis (Linn.). Principally on sallow, willow, and ash, but 

 occurring, not uncommonly, upon alder, broom, dogwood, 

 lilac, elm, and several other trees. Scale of female white, 

 but often obscured by a superficial "deposit of algae from the 

 bark of the trees to which it is attached. The tricarinate 

 male scales are sometimes clustered so thickly upon the 

 stems as to give the tree the appearance of having been 

 whitewashed. 



The genus LepidosapJws, which has precedence of the better known 

 name Mi/tilciKpift, is similarly represented by the single species — 

 L. ulrni (Linn.). A pest of orchard and other trees, well known to 

 gardeners and fruit growers as the "mussel scale," and 

 generally referred to, in text books, by the name of Mi/tilaapis 

 poiiionnii. Its popular name is a good description of its 

 appearance, for the scale is really very like a miniature 

 mussel shell, of a reddish brown colour. 

 L. iibiii-candidiis, Newstead, is a variety with a milk white scale, 

 occurring on Crataenm. 



We now come to the subfamily Lcranunae wnth numerous genera, 

 of which nine occur wild in this country. They are of very diverse 

 appearance, but may be distinguished by the following characters. 

 Females with the posterior extreniity more or less deeply cleft, with 

 a definite setiferous anal ring; anal orifice covered dorsally by a pair 

 of triangular hinged plates. Adult males with from four to eight 

 ocelli; halteres often' wanting ; penuil sheath moderately long and 

 slender ; usually with a pair of long caudal filaments. The male 



