14. 



Family d. — 1. Body much campressed. 2. Eyes two and sim-1 

 pie. 3. Epicranial portion of head greatly prolonged. | 

 4. Labrum wanting. 5 Labium small and membranous. )• 

 6. Labial palpi, always absent in other diptera, three-joint- 1 

 ed and long and slender. j 



62 



PliLIC- 

 IDAE. 



(Fleas.) 



Antennae short (Brarhi/cera). 



68-69. 



Family e. — 1- The three basal cells of wings much prolonged, the 

 third longitudinal vein furcate and tegulae large. 2. 

 Proboscis of male has four and of female six bristles. 3. 

 Third joint of antennae annulate, and always without?" 

 style or bristle. 4. Eyes large. 5 Thorax oblong and I 

 flattened above. 6. Only females bite. j 



Family f. — 1. Bodies large and stout, and covered with stiff hairs ] 

 2. Third joint of antennae simple. 3. Labium form 

 horny sheath and the empodium is like a horny bristle 

 4. Abdomen long, 5. Species rapacious. 



IS a I 

 tie. f 



63 



TABANI- 

 DAE. 



(Horse-fly 

 Fam.) 



64 



ASILIDAE. 

 , ■• (Robber- 

 j flies.) 



Family g. — 1. Body oval and very hirsute. 2. Proboscis long. ] 

 3. Wings with the three basal cells much prolonged, — ante- | 

 rior intercalary vein present, posterior absent. 4 An- I 

 tennae with third joint simple. 5. Empodium rudimen- " 

 tary. 6. Fly very swiftly along sunny paths in spring 

 ancl summer. 



Family "Jx- — 1- Head hemispherical. 2. Eyes large and broad. ~) 

 3. Body somewhat flattened and ornamented with yellow I 

 bands and spots. 4. Wings with the three basal cells | 

 much prolonged: third longitudinal vein simple: spurious I 

 longitudinal vein between third and fourth; fourth longi- f 

 tudinal vein united at its end with tliinl; and no intercal- I 

 ary veins. 5. No empodium. 6. Feed on plant lice | 



and resemble wasps. J 



65 



BOMBYL- 

 IIDAE. 



66 



SYBPtl- 

 IDAE. 



67 



Family i. — 1. Body stout and hairy. 2. Mouth very small and 

 oral organs rudimentary. 3. Middle part of face exceed- I 

 ingly narrow. 4. Antennae minute and inserted in f d.^e.' 



rounded pits. 5. Some probably viviparous. J (Bot-flies.) 



Family]. — 1. Antennae three jointed, the terminal joint being] 68 



flattened and with a plumose bristle in typical species I 

 2. Proboscis ends in a fleshy lobe with porrect single-jointed | 

 maxillary palpi. 3. The four longitudinal veins of }• MUSCIDAE 



wings simple, the first of the two veins on the hinder edge 

 often approaching that on the apex of wing. 4. Tarsi 

 have two pulvilli. 6. Abdomen five jointed. 



(Flies.) 



Family k- — 1- Body flattened and horny. 2. Head horizontal 

 and flattened, and received into front edge of thorax. 3. 

 Eyes large. 4. Rudimentary uapilla-likeanteniuie placed 

 near together. 5. Proboscis formed by labrum and max- 

 illae, whose palpi are wanting. 6. Labium very short. 

 7. Wings with veins present only on costal edge. 8. 

 Parasitic beneath hairs of vertebrates. 



69 



IIIPPOB- 

 OSCIDAE. 



(Forost-flies 



and Sheep 



Ticks.) 



