73 



SiMULiD^, a family of Diptera consisting of the single genus Simulium, 

 universally distributed, 28 ; often causes great losses among various 

 animals, especially in United States and Hungary ; description and pre- 

 liminary stages, 28 ; S. hirtipes, a biting pest in Scotland, 30 ; 5. reptans 

 (plate 10), a northern species, description of, 29 ; distribution of, 30. 



Spotted Gnat (plate 4), otherwise known as Anopheles macnlipoinis, 20. 



StoiMOXvs, a genus of Muscida; : 6'. calcitrans (plate 29) similar in size to 

 house-fly, but distinguished by proboscis, common in Great Britain, 

 plagues both men and cattle, 58 ; its bite and that of Hamatobia 

 sfimulans more painful to some persons than that of any other fly ; 

 cattle and horses severely bitten in Northumberland in 1865, 59; geo- 

 graphical range very wide, 59. 



Stouts, popular name for species of Tabanidse, 31. 



Tabanid.b (Horse-flies, Breeze-flies, Dun-flies, Clegs, and Stouts, frequently 

 called Gad-flies), a family of Diptera, most formidable in appearance of 

 all blood-sucking flies ; world-wide distribution, twentj'-two recognised 

 species in Great Britain, general appearance, 31 ; common in summer in 

 country places, 32 ; large as well as small animals severely affected in 

 many countries, 2ii '1 petroleum used in Russia for destruction, 2,1 ; 

 description of eggs and larvse, latter carnivorous ; Tabanidse some- 

 times preyed upon by robber-flies, 34. 



Tabanus, a genus of Tabanida; : T. aiilumnalis (plates 21 and 22), striking 

 sexual difference in marking and coloration of abdomen, 48 ; in South 

 of England one of commonest species of the genus, continental dis- 

 tribution, 48; T. bovinus (plate 19), with T. sudetkits the bulkiest of all 

 British Diptera, 45 ; distinguished from T. sudeticus, 45, 46 ; British 

 specimens in Museum all from Southern counties, continental specimens, 

 habits, 46 ; T. bromiiis (plate 23), common in South of England, easily 

 recognised, dimensions of, British specimens in Museum, 49 ; distri- 

 bution throughout Europe, 50 ; T. cordiger (plate 25), usually rare, but 

 plentiful in Abernethy Forest, Inverness-shire, 51 ; continental distri- 

 bution, 52 ; j; glaucopis, no British examples in Museum, description of, 

 continental specimens, 52 : T. maciilicornis (plate 24), distinguishing 

 characters of, smallest of the British species of Zl, 50 ; very common in 

 South of England, British and continental specimens in Museum, 51 ; 



