1913.] 103 



The three known species of Cacoclmus can be identified as follows : — 



A. Hind femur as long as hmd tibia : — 



1. Cacodmusvillosus, Stkl. S.Africa. (? 9 :— Very broad, particvilarly 



the c? • Pronotum touching- the eyes or nearly, its anterior 

 angles much produced. Antennal segment 2 one-fifth or one- 

 sixth longer than 3, and 3 slightly longer than 4. Penis of ^ 

 long, reaching to centre of segment 6. 



B. Hind femur shorter than hind tibia : — 



2. C. ignotus, Eoth, Origin iinknown. ? : — Narrower than the 



previous species. Pronotum almost touching the eyes, its 

 angles less produced than in villosus, but nevertheless reaching 

 to centre of eyes. Antennal segment 2 almost half as long 

 again as 3, and 3 slightly shorter than 4. 



3. G. indinis, Eoth. India. <? 9 : — Narrower than ignotus. Head 



exserted. Angles of pronotum distant from eyes, very little 

 produced ; explanate margin narrow. First tarsal segment 

 with two thin bristles near apex, one short and one long. 

 Penis of J not reaching to centre of segment 7. Antennal 

 segment 2 only one-eleventh longer than 3, 3 and 4 being of 

 eqiial length. 



Arundel House, 



Kensington Palace Gardens, W. : 

 March 25th, 1913. 



ASPIDIOTUS BAVABIGU8, Ldgr. : A SCALE-INSECT NEW TO THE 



BRITISH LIST. 



BY DR. LEONHARD LINDINGER. 



In his excellent work on the Coccidx of the British Isles,* Newstead 

 gives Calluna vulgaris as the food-plant of Asindiotus ostreiformis, and 

 figures (PI. V, fig. 6) the scale of an example on this plant. This scale 

 differs considerably in shape and colour from that of the typical 

 A. nstreiformis. In the beginning of 1912, I examined carefully an 

 Aspidiotus living on Calltma vulgaris and Erica tefralix in Germany, 

 Noi-way and Styria, and found that its scale agrees completely with 

 that figured by Newstead, but that the insect is different from 

 A. ostreiformis. It is a species new to science and has been described 

 by me as A. bavaricus since I first found it in Bavaria. f 



In my recently published book on European Coccidx,X I was imable 

 to include England unreservedly among the countries from which 



*Newstead, Monograph of the Coccidm of the British Isles. London, Vol I, p. 101. 

 tliindlnger, Zoitschrift fllr wissonschaftliche Insektenbiologie. Bd. VIII, 1912, p. 31. 

 X Idem, Die Schildliiuse {Cnrcihi) Europas, Nordafrikas und Vorderasiens, einschliesslich 

 der Azoren, der Kanareu und Madeiras. Stuttgart, 1912, p. 89. 



