DIPTEKA. 



SyrphidcB. 



1. Chrysotoxum marginatum, Meig. Occasionally 



common on flowers in June. 



2. C. octomaculatum, Curt. Rare. 



3. C. arcuatum, Linn. A single specimen only was 



taken by myself in the Green Wall, June 23rd, 

 1874. 



4. C. bicinctum, Linn. Common. 



1. Pipiza bimaculata, Meig. Not common. 



2. P. biguttata, Curt. Common. 



3. P. noctiluca, Linn. Common. 



1. Paragus obscurus, Meig. Not common. 

 1. Chrysoclamis cuprea, Scop. Common. 



1. Cheilosia longula, Zett. Common. 



2. C. chalybeata, Meig. Abundant. 



3. C. variabilis, Panz. Abundant. 



4. C. flavipes, Panz. Common from March to June. 



1. Leucozoma oestracea, Linn. Of occasional occur- 



rence on flowers, July and August. 



2. L. lucorum, Linn. Of occasional occurrence on 



flowers, June and July. 



1. Pyrophsena rosarum, Fab. Common. 



2. P. ocymi, Fab. Not common. 



1. Melanostoma hyalinata, Fall. A single specimen 



only was taken by myself in Wootton Wood, 

 August 9th, 1871. 



2. M. scalaris, Fab. Common. 



3. M. manicatus, Meig. Common. 



4. M. peltatus, Meig. Abundant. 



