136 (135). Antennæ short; male genitalia prominent, and club-shaped. _Part of_ SEPSIDÆ, XLVI (genus Tetanura) 137 (134). O, 5^1 and O, 6^1 small and not very prominent. 138 (139). Light grey or silvery species. _Part of_ AGROMYZIDÆ, LIII 139 (138). Orange or brownish-red species. _Part of_ OPOMYZIDÆ, XLV 140 (26). Wings with two short very thick veins (in fore-basal region) whence spring a few very fine unbranched veins. X-veins absent (_plate_ V, 35). PHORIDÆ, LVII 141 (1) (52-3/4). Body of a horny or leathery nature; head sunk into a hollow in the thorax (_plate_ VI, 35). No proper proboscis or palpi; claws very large (_plate_ VI, 36). Perfect insect parasitic. EPROBOSCIDEA— 142 (145). Head fairly large; wings sometimes shed or absent. 143 (144). Eyes, ocelli, scutellum, halteres, and wings all absent; last tarsal joint combed with bristles. BRAULIDÆ, LIX 144 (143). Eyes and scutellum present; last tarsal joint with well developed claws. HIPPOBOSCIDÆ, LVIII 145 (142). Head small, when at rest thrown back upon the dorsum; always wingless. NYCTERIBIDÆ, LX INDEX Air-sacks, breathing by, 46 ANTHOMYIDA, 10, 17 _Asilus crabroniformis_, 55 Aphides, plant-lice, etc., 8 Beelzebub, Lord-of-flies, 2 BIBIONIDÆ, semi-blindness of, 108 Birds, food for, 80 Black death, 2 Blood-sucking flies, kinds of— genus, _chrysops_, 24 genus, _hæmatobia_, 16 genus, _hæmatopota_, 23 genus, _lyperosia_, 17 genus, _tabanus_, 23 genus, _therioplectes_, 23 Blood-sucking midges and gnats —common species— _ceratopogon pulicaris_, 108 _ceratopogon bipunctatus_, 108 _ceratopogon varius_, 108 (also others of the same genus and of the allied genus, _anopheles_) _culex pipiens_, 108 Blue-bottles, 12, 18, 33, 36, 51 _Borborus equinus_, 34 Bot-fly of the horse, 26 Breeze-flies, "blinden," 10, 23, 29, 69 Bridgewater Treatises, 1 Cabbage-fly, 17 _Calliphora erythrocephala_ } _see_ blue-bottles _Calliphora vomitoria_ } _see_ blue-bottles Celery-fly, 17 Chelifers, 55 _Chrysops cæcutiens_, 24 _Chrysops relicta_, 24 _Conops flavipes_, 22 Contagion, fly-borne, 84 CORDYLURIDA, 10 Cow-dung fly, the yellow, 19 Crane-flies, or Daddy-long-legs, 109 Cremation of refuse, 41, 61, 65, 70 _Cyrtoneura simplex_, 17 DIPTERÆ, nearly 3,000 species, 10 Dragon-flies, 55 Drone-flies, 20, 22 Dun-flies, _see_ Gad-flies Dust-bins, preferably open, 65, 70 Dust destructor furnace, imperative, 65 Economic value of the fly, 41 Egg-traps, domestic refuse as, 65, 72 EMPIDÆ, 54 _Empusa muscæ_, 56 _Eristalis tenax_, 21 Exclusion from rooms, 76 _Fannia canicularis_, 7 _Fannia scalaris_, 14, 18 Filth-flies, 51 Fleas, 108 Flecked flesh, 29