640 
DIPTERA. 
2. Head broad. Palpi spoon or leaf-shaped .. Hydromyzince. 
Head rounded, not particularly broad. 
Palpi not broadened .. .. Scatophagince. 
3. Front femora with a double row of bristles 
on the inner side . . . . Norellince. 
Front femora with at most a single row 
of bristles on the inner side .. .. 4 
4. Face short. Palpi small without long 
bristles. Antennae short, arista bare 
or at most pubescent .. .. Clidogastrince. 
Face long. Palpi only occasionally flat¬ 
tened, sometimes with long end-bris¬ 
tles. Arista bare or plumose. Mostly 
very bristly flies . •.. .. Cordylurince. 
Anthomyiim. 
Nat large flies ; coloured dull brownish black or grey, the squamce fairly 
large, and the eyes usually closer together in the male than in the 
female. The ls£ posterior cell widely open. The abdomen with four 
or five segments visible, rarely bristly. 
The division of Calyptrate Muscoids is usually made to include this 
family, while some authors make the Anthomyiids into a separate divi¬ 
sion intermediate between Calyptrates and Acalyptrates ; this is pro¬ 
bably their natural position, but we have for convenience included them 
in the Acalyptrates after the Cordyluridce, to which they bear very close 
relationship. The adult flies are generally very much like house-flies 
in colour and general appearance, and one genus, Homalomyia, habitually 
haunts human habitations in India in company with the true House¬ 
flies ( Muscidce ). All the Anthomyiidce are flower-flies with the exception 
of a few predaceous species, but their larvae are of somewhat diverse 
habits, a few being found in dung, others in decaying vegetable matter 
of different kinds, and others in the roots of plants. Though the last- 
named group are often very destructive to onions and other crops in 
Europe and America, and very difficult to combat, no instances of their 
having done noticeable damage in India have yet come to our knowledge. 
The eggs, larvae and pupae are of the usual muscoid type, the larvae simi¬ 
lar in proportions to those of fruit-flies (fig. 418) and as a rule having 
