LIST OF INSECTS. 209 



MUSCTDiE. — Latreille. Division II. — Acalypteees. 



Scatophaga stercoraria. — Abundant on dung everywhere. 



S. medaria. — Not uncommon. Frequents the sallow blossoms in early spring. 



Sciomyza pallida. — Not uncommon in the neighbourhood during the summer 

 months. 



Leria serrata. — Frequents windows, and oftentimes obtained by sweeping in 

 the evening, also observed on the leaves of plants in May and June. 



Dryomyza flaveola. — Of frequent occurrence near Landport, on the leaves of 

 hedge shrubs, in July. 



Tetanocera Hieracii. — This pretty little insect is very common on a moist 

 bank by Landport, near Lewes; and to be found amongst the tangled herbage 

 by using the sweeping net. 



Opomyza combinata. — Occasionally found among the grass and herbage around 

 the hawthorn bushes on the Downs. 



Bliytomyza notata. — Found with other small species of Diptera among grass, 

 by sweeping. 



CESTEIDiE.— Leach. 



Gasterophilus nasalis. — This species was taken rather plentifully by a friend 

 at Firle, in 1854. 



Dolipkus vulgaris. — Both male and female most abundant on the blossoms 

 of the Cow Parsnip, (Heracleum sphondylium,) in July. 



Bibio marci. — Abundant everywhere, and may be observed hovering in the 

 air beneath the foliage of large trees in lanes, particularly on sultry days; 

 appears usually in May. 



B. fiavicollis. — Not uncommon on Umbelliferce. 



I have now completed my list of the Diptera of this district, as far as my 

 knowledge of the species permits me satisfactorily; and although but a faint 

 outline of its production in this order, (as I stated in my prefatory remarks, 

 it has no pretensions to perfection,) still it represents generally some of the 

 most beautiful, most conspicuous, and most generally distributed species. Many 

 others have been observed of the more obscure and difficult genera as Antliomyia, 

 Tachina, etc., and which it is hoped will at some future time be added to 

 the list. It is a matter of regret that we but so rarely meet with an entomologist 

 or collector who appears to take any interest whatever in this order, and yet 

 surely this beautiful tribe of insects is worthy the attention and admiration of 

 the young collector at least, some of the species being equally as beautiful, 

 and equally as interesting in their habits, as the gaily-coloured butterfly or 

 delicately-pencilled moth. They are the constant companions of our summer 

 rambles, and enliven and cheer us with their lively and active habits. Until 

 very recently we had no work which treated fully on this subject, but that 

 blank is now amply filled up by Mr. Walker's valuable volumes in "Insecta 

 Britannica" — Diptera, whose nomenclature and arrangement I have adopted. 



Passing on from this order, I now introduce a list of the Aculeate Hymen- 

 optera which have been observed within the prescribed district; the habits and 

 economy of which are most interesting. These industrious and ever busy 

 little creatures have engaged my especial attention for several successive 



