LIST OF THK BRITISH STRATIOMYIDiE. 131 



the Banksian collection was far too small to be this species, and 

 was too dilapidated to identify ; one in Dr. Mason's collection 

 which, though I fail to recognise it, is certainly not this species; 

 and one in Dr. Meade's cabinet, this latter being the only 

 specimen I can safely refer to this species. I found one in the 

 British Museum general collection under the genus Oxycera. 

 Very rare. I have one from Austria. 



2. 0. argentata, F. (1794), Ent. Sys. iv. 266. = paludosa, 

 Schum. — The under side of the abdomen of this species is said to 

 be green, but I have not noticed this fact, it may, however be 

 the case in living specimens ; I know the green colour of 0. 

 viridula often fades after death. Not uncommon. On willows. 

 Generally distributed. 



3. 0. ornata, Mg. (1804), Klass. i. 129. = furcata, Latr. ; 

 transformations, Beaumur Mem. iv. pi, xxv. — The British 

 Museum collection contains an interesting variety, in which the 

 markings on the face differ from those in the type. Prof. 

 Jsennicke has bred this species from aquatic larva. Bather 

 common, and generally distributed. 



4. 0. tigrina, F. (1781), Sp. Ins. i. 417. = nigrita. Fall. — 

 Not common. Easily recognised by its entirely black colour. 



6. 0. angulata, Panz. (1798), F. Germ. Iviii. 19. = ruficornis, 

 Zett. ; brevicornis, Lw. — Mr. Verrall introduced it to our fauna 

 in the Ent. Month. Mag. for Jan., 1886, having taken one female at 

 Tuddenham in July. Mr. Dale has it also in his collection from 

 the south-west. Allied to liydro'pota, Mg. Very rare. 



6. 0. hydropota, Mg. (1822), Sys. Bes. iii. 147. — This species 

 I considered '* uncertain " for a long time, but among some 

 specimens from his collection very kindly lent me by Mr. C. Dale 

 for examination, I found a specimen undoubtedly of this species. 

 I have it from France and Bohemia, it being rather common on 

 the Continent. Very possibly it is now quite extinct in Britain. 



7. 0. viridula, F. (1775), Sys. Ent. 760. — aaniina, Pz. ; 

 jejuna, Schr. ; dentata, subvittata, bimaculata, Mg. ; interrupta, 

 Lw. — The variety subvittata, Mg., is so pronounced that, but for 

 Schiner and Jsennicke ranking it as such, I should have regarded 

 it as specifically distinct. It is entirely yellowish, with an 

 irregular narrow black central stripe on the abdomen. Dr. 

 Mason's collection contains some extraordinary varieties of this 

 common and widely distributed species. 



Walker introduced 0. connexa as British, giving no locality, 

 but mentioning its rarity and presence in the British Museum. 

 In the corrections in vol. iii. of his Ins. Brit., he admits that it 

 is not even European, and that it was inserted by mistake. What 

 I believe to be his type specimen is still in the British Museum 

 British collection. He also introduces 0. hydrodromia, Mg., 

 and O. hydroleon, Mg. ; but of neither of these species can I find 



