ae 
a 
dispar (Zygothrica), 33, 44, 55 
District of Columbia, 110 
divergent, 26 
Dolichopodide, 36 
Dolichopus, 31 
Dominica, 113 
dorsocentrals, 28, 41, 42 
dorso-lateral plate, 32 
Drosomyia, 106 
Drosomyiella, 59, 124 
INDEX. 
Drosophila, 8, 16, 18, 19, 22, 29, 30, 33, 50, 108, 
109, 118, 115, 116, 117, 124-130 
description, 65 
distribution, 66 
history, 65 
keys, 66-70 
Drosophilinz, 38, 41, 48, 49, 107 
Drosophilura, 55, 131 
dubia, 70 
description and distribution, 73 
key, 68 
Duncan, F. N., 3 
duncani 
description and distribution, 86 
key, 67 
spermatheca, 36 
dwarf, 119 
earlei 
chromosomes, 39 
description and distribution, 98 
eggs, 19 
key, 69 
East, E. M., 122 
Echidnocephalus, 48, 107 
eggs, 18-19 
Elaphropeza, 18 
Elwyn, A., 15 
Empidide, 18, 37, 54 
enemies, 17 
Enderlein, G., 52 
Ensina, 31 
Eostegnana, 56, 131 
Ephydrine, 8, 22, 38, 49, 107 
Epochra, 22 
Eretmoptera, 120 
Ethiopian region, 108, 115 
Euaresta, 40 
Eumyiide, 48 
Europe, 115 
Euxesta, 61 
excita, 106 
expanded, 120 
eyeless, 120 
eyes, 27 
Fabre, 21 
Fabricius, 84 
face, 25 
Fallén, C. F., 65, 81, 93 
fasciola 
description and distribution, 99 
key, 69 
femur, 29 
Fiji, 116 
Fitch, A., 90 
5x index, 30, 43 
flaveola, 106 
flexa 


flexa, description and distribution, 71 
key, 68, 69 
florae, 70 
chromosomes, 39 
description and distribution, 72 
key, 69 
Florida, 109, 110 
food habits, 16 
4c index, 30 
fourth-vein index, 30, 43 
Frauenfeld, 54 
front, 25 
frontalis (Leucophenga), 106 
distribution and key, 60 
fronto, 106 
fronto-orbitals, see orbital bristles. 
Frost, S. W., 2 
Fucellia, 31 
145 
funebris, 20, 27, 29, 65, 70, 106, 109, 115, 120 
chromosomes, 39, 40 
courtship and mating, 6 
description and distribution, 84 
eggs, 19 
key, 68, 70 
larval mouthparts, 21 
male genitalia, 33, 34 
mutations, 14 
puparium, 23, 24 
secondary sexual character, 45 
spermatheca, 36 
variability, 41, 43 
fusca, 74, 106 
fused, 121 
Gardner, L. L., 3 
gena, 25 
genetics, 12-14 
genital arch, 33 
geographical distribution, 108-117 
Geomyzine, 38, 41, 49 
Georgia, 110 
giant, 119 
| gibbum (Curtonotum), 33, 35, 52 
Giglio-Tos, 52 
Gitona, 16, 50, 108, 115, 116, 131 
description and distribution, 54 
Gitonides, 54, 55, 131 
gonads, larval, 22 
gonotypes, 83 
graminum (Scaptomyza), 33, 106, 109, 114 
chromosomes, 39 
courtship and mating, 7 
distribution, 64 
eggs, 19 
key, 64 
ovipositor, 32 
spermatheca, 36 
gravity, reactions to, 4 
Grimshaw, P., 55 
Guatemala, 113 
guttifera, 31, 70 
description and distribution, 103 
key, 67 
spermatheca, 36 
Guyénot, E., 15 
gynandromorphs, 45 
hairless, 120 
hairy, 120 
