THE ENTOMOLOGIST. 



No. 74.] FEBRUARY, MDCCCLXX. [Price 6d. 



Notes on the Diplera in the Entomological Club Collection, 

 By G. II. Verrall, Esq. 



By the kindness of Mr. Newman, vvho has the management 

 of the Entomological Club collection, 1 have been enabled to 

 examine some of the numerous species of Diptera contained 

 therein, and thinking a few remarks on the Syrphida? may be 

 of some little interest, T beg to offer them. The total number 

 of acknowledged British species in this family is not quite 

 170, and there are more than 140 in this collection, amongst 

 which are I'epresentatives of the following genera. 



Bacha. There are only half-a-dozen specimens of this 

 genus, four belonging to elongata and two to obscuripennis. 



Sphegina. There is a fine series of S. clunipes, a rather 

 rare species, and difficult to obtain. 



Arcia. Walker refers to this collection for his A. hastata, 

 but I believe the specimen is only a variety of floralis, of 

 which dispar seems another variety : there are three speci- 

 mens of this little species and half a row of its common ally 

 podagrica. 



Doros. There are four specimens of the rare D. conopseus, 



Xanthogramma. Both species are very well represented, 

 there being about a dozen ornata and eighteen citrofasciata, 

 both handsome species, seldom found in abundance. 



Sphaerophoria. The species in this genus are in a very 

 confused state, never having been anywhere properly de^ 

 scribed: there seem to be specimens of scripta, dispar, picta, 

 Menthrasti, and possibly nilidicollis. 



Syrphus. In this large, genus there are representatives of 

 nineteen species, comprising an entire row of Pyrastri, with 

 four of the variety unicolor, and some interesting intermediate 

 specimens; seven laternarius; eight glaucius; one tricinc- 

 tus ; one nitidicollis ; a dozen latifasciatus ; one arcuatus, 



VOL. V, q 



