XXIX 54, 60. Conopidæ: the wings show no "vena spuria"; the known larvæ are parasitic on Hymenoptera and Orthoptera.
XXX 62. Œstridæ: a few very distinct species; proboscis and mouth parts atrophied; very hairy except one very rare; parasites of mammalia.
XXXI 72. Tachinidæ: 100 genera, more than 250 native species; with great difficulty classed in divisions, which may rank as separate families; stoutness of body and abundance of strong hairs, or rather bristles, are so generally apparent that many species may be guessed to belong to this family rather than to the closely related Muscidæ. Many of the larvæ are parasitic on various insects.
XXXII 73. Muscidæ: 15 genera, comprising 36 native species, mostly very common, and many superabundant throughout summer by reason of rapid breeding.
XXXIII 74. Anthomyidæ: 4 sub-families (Mydæinæ, Anthomyinæ, Homalomyinæ, Cœnosinæ), 36 genera, and nearly 300 native species; difficult to characterise, but many rather resemble the lesser house-fly in size, and more or less in appearance, habit, and life-history, but some seem attracted rather more to flowers and others drawn only towards dung.
XXXIV 82. Cordyluridæ: 29 genera; absence of squamæ apparent; otherwise generic features and general sizes and bodily shapes of species vary considerably. The yellow cow-dung fly, Scatophaga stercoraria, is the commonest species of this large family.
XXXV 89, 116. Phycodromidæ: sea-shore flies.
XXXVI 80. Helomyzidæ: 8 genera; the costa of wings very "pectinate"; wings large and abdomen small.
XXXVII 78. Heteroneuridæ: 3 native species; smallish elongated wings; the larvæ, which live in rotten wood, can jump, somewhat like the cheese-hopper maggots.
XXXVIII 86, 95. Sciomyzidæ: 11 genera; slender flies with tinted brownish wings; larvæ aquatic.