70 



Chrvsoi'S, a genus of Tabanidae : C. caciilicns (plate 26), striking sexual 

 difference in coloration and marking of abdomen, beauty of eyes, 

 British specimens in Museum, 5,5 ; in ICngland, commonest species of 

 genus, not plentiful in Scotland, 54 ; almost silent in approach, thus 

 differing from Tabanus, continental specimens in .Museum, 54 ; 

 C. qiiadrata (plate 27), differences between male and female, 54; rare 

 generally in Britain, continental specimens in Museum, 55 ; C. relicta 

 (plate 28), distinguished from C. aeciitiein, description of, common and 

 generally distributed in Great Britain, continental specimens in Museum, 

 55 ; C. sepukralis, rare in British islands, only three specimens in 

 Museum, description of, continental distribution, 56. 



Ci.Kcs, ])0[)ular name for species of Tabanidx, 31. 



CocciD.E (scale-insects), clistinguishctl from gall-midges (Diptera), 11. 



ClTLEX, a genus of ('ulicidas : C. cantain (plate 6), not very common in 

 Great Britain, 24; C. nemorosiis (plate 7), common in England, not seen 

 in houses or out-buildings, range of, 25 : C. pipiots, the Common Gnat, 

 (plate 8), common in Great Britain, in houses practically throughout the 

 year, 25 ; often found in winter on roofs of cellars, a troublesome blood- 

 sucker, geographical range, 26. 



CuLiciD.E (gnats or mosquitoes), twenty-two J5ritish species, Ik^v distin- 

 guished from certain midges, 17 ; blood-sucking habit confined to female 

 sex in British mosquitoes, 17; i)reliminary stages of development, 17, iS; 

 British mos([uitoes beside those illustrated, 18. 



Cui.iroiDKs, a genus of Chironomid:;;, revived by l\.icffer to include Cemto- 

 pogon varius, C. puUcaris, and other species of ("eratopogon, 14 (note). 



Dark surfaces, predilection of various blood-sucking Diptera {Anopheles, 

 Hcemaiopafa, Lypcrosia) for resting thereon, 60, Oi. 



DiPTKRA, chief characteristics of, 11 ; fifty-nine families recognised as British 

 in W-rrall's ' List,' 11 ; 2700-_^ooo liritish species, 12. 



DuN-Ki.iKS, popular name for species of TabanidiU, 31. 



"Flies," meaning of term, 11; blood-sucking habit in only six British 

 families, 12. 



Gad-I'LIEs, popular name fretjucntly applied to Tabanida!, 31. 



