1 10 NUMBERED LIST OF FAMILIES 



Nos. Refs. FAMILIES Notes 



XX ... 43. THEREVIOE: non-raptorial flies; smaller, shorter, and 



more feeble than Asilidae ; though differing much in wing- 

 pattern superficially like some Leptidae or some Empidae. 



XXI ... 44. SCENOPINID/E: a very limited family of smallish flies. 



Scciiopi mis fciu'stitilis, the " window-fly " was formerly thought 

 to breed amidst old carpets and musty neglected clothing, 

 but its larvae have been found to be therein predaceous 

 devourers of the larvae of clothes-moths and fleas; larvae of 

 other species feed on fungi. 



XXII ... 38. CYRTILXE : quite unlike any of the preceeding or suc- 

 ceeding families; flies with diminutive heads and large rotund 

 abdomens ; proboscis very short or obsolete ; the larvae of 

 some are said to be parasitic on spiders. 



XXIII ... 45, 49, 66a. EMPID.E: an extensive family; about 200 

 species, mostly of small sizes ; of slender habit, and of dull 

 colours ; there are 30 genera and the characteristics of some 

 are peculiar; the life-history and habits of most are un- 

 recorded; though with bodies of feeble appearance, some 

 have the proboscis well devolped and are predaceous on small 

 insects. Amongst the most curious are some species of the 

 genus Hilara, of which the males have the first tarsal joint of 

 the fore-leg thickened and flattened; some species of this 

 genus, not very uncommon, fly and float about carrying 

 "veils" or small cob-web-like attachments. 



XXIV ... 50, 65. DOLICHOPODID^E : long-legged; alarge family of 42 

 genera; some species of medium size but mostly small, 

 amongst which latter bright metallic colours, often golden 

 green, are common. The life-history of only a few is known. 



XXV ... 51. LONCHOPTERHXE : a few small slender flies with long 

 pointed wings. 



XXVI ... 53. PLATYPEZID^: : small flies; the peculiar broad flat 

 larvae of some of the genus Platypcza have been found in 

 fungi. 



XXVII ... 58. PlPUNCULlD^E : small and uncommon flies with abnor- 

 mally large eyes 



XXVIII ... 59. SYRPHID^E: a most interesting group of 51 genera; 

 "hover-flies," and other various, conspicuous, large and med- 

 ium sized flies (only a few small), very distinctly characterised 

 and differentiated; the wings show the "vena spuria," and 

 the face is without a "frontal suture." The larvae are very 

 diversified; some are terrestrial, some aquatic, some insecti- 

 vorous, some parasitic or commensal in the nests of Hymen- 

 optcra. 



XXIX ... 54, 60. CONOPUXE: the wings show no "vena spuria"; the 

 known larvae are parasitic on Hymcnoptera and Orthoptera. 



