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only 4 were observed. The adults emerge in May and June. They 

 are long-lived and attain sexual maturity very late. Imms stated 

 that in England eggs were laid in the case of B.hritannica, Gir. {loc. cil.) 

 from July to September and unhatched eggs were seen in November. 

 It is desirable that it should be ascertained in England when the first 

 generation of Blastoihrix attains sexual maturity. The larvae of the 

 second generation complete their development in February-March of 

 the following year, the adults appearing in April as stated. About 

 one-third of the parasitised females of E. coryli succeed in ovipositing 

 in spite of the many parasites within them, though fewer eggs are 

 produced. Infestation varies considera})ly, with an observed maxi- 

 mum of 60 per cent. 



Aphycus puHctipes, Dalm., has the same distribution as B. sericea ; 

 A. melanostomatus, Timb., and A. mayri, Timb., are considered 

 to be synonyms of it. The first adults of the second generation of 

 A. puneiipes appeared at Portici at the end of March, one individual 

 emerging from each hibernating larva of E. coryli. The females that 

 appear in March- April oviposit in a day or so, from 1 to 69 eggs being 

 laid in a last-stage female of the scale. Eggs laid on 9th April yielded 

 pupae on 27th April and adults on 5th May. The life-cycle of the 

 first generation therefore takes about a month. These adults appear 

 from 26th April to 21st May and in nature the females usually 

 lay one egg in each Coccid larva. During the summer no first- and 

 second-stage larvae of E. coryli were found infested, but numerous 

 first-stage larvae were found to be attacked from October to December, 

 second-stage ones from November onwards and third-stage ones 

 from 10th December. At the end of September larvae of Pulviiuiria 

 vitis at Avellino were infested with larvae and pupae of Aphycua 

 punctipes ; the adults emerged from 6th October onwards. The 

 author suspects that from May to autumn (a period during which 

 the larvae of E. coryli are large) A. punctipes develops in scales such 

 ,a,s Sjihaerolecanium prunaslri, Eultcanium comi and Pulvinaria vitis, 

 and that from October onwards it returns to E. coryli, from which the 

 adults of the first generation emerge in the following spring. The 

 number of young individuals of E. coryli killed in autumn and winter 

 varied from about 4 to 45 per cent., and the spring infestation from 10 

 to 50 per cent. The practical value of Aphycus punctipes is similar 

 to that of Blastoihrix sericea. Both species are hyperparasitised by 

 Pachyneuron coccorum [see preceding paper]. Aphycus philippiae, 

 Masi, has been recorded from southern Italy and Sicily and probably 

 occurs throughout southern Europe. It is known as a parasite 

 .of Filippia {Philippia) oleae and of an undetermined species of 

 Lecanium. The author has obtained it from first-stage larvae of 

 E. coryli on Prunus domestica near Portici. The fi.rst parasitic pupae 

 were seen on 24th August and the adults appeared from 8th September 

 to 10th October. Adults of 8th September attacked second-stage 

 larvae of E. coryli, but up to 15th October no larva of that stage 

 contained a larva of A. philippiae. In the summer of 1919 about 

 2 per cent, of the larvae of E. coryli were parasitised by A. philippiae. 

 Coccophagus scutellaris, Dalm., a parasite of various Lecaniines, was 

 obtained from E. coryli, about 1 per cent, of which were parasitised. 

 Microterys sylvius, Dalm., has been hitherto recorded from Sweden, 

 s Germany and Austria. The author has not been able to complete 



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