DIP TER A. 
48 7 
account of the remarkable jumps which they can make. 
This is accomplished by first bringing the head and tail ends 
together and then suddenly straightening the body. In this 
way one of these maggots can jump several inches. 
To the genus Ephydra (Eph'y-dra) of the subfamily 
Ephydrince (Eph-y-dri'nae) belong several species the larvae 
of which live in marine or strongly alkaline waters. In the 
far West and in Mexico these larvae occur in the alkaline 
lakes in countless numbers; and are washed ashore in such 
quantities that bushels of them can be collected. They are 
gathered by the Indians, who dry them and use them for 
food, which they call Koo-cha'bee. 
The Pomace-flies.—These are certain small yellowish 
flies from one-eighth to one-sixth of an inch in length, which 
are very common about the 
refuse of cider-mills, decaying 
fruit, and fermenting vats of 
grape pomace. These are the 
pomace-flies; and their larvae 
live in the decaying fruit. 
A very common species is 
the Vine-loving Pomace-fly, F,G ' 594 .-Dro^hiia 
Drosophila ampelophila (Dro-soph'i-la am-pe-loph'i-la) (Fig. 
594 )- 
Family HiPPOBOSClD^: (Hip-po-bos'ci-dae). 
The Louse-flies . 
The louse-flies are very abnormal flies that, in the adult 
state, live like lice, parasitically, upon the bodies of birds 
and mammals. Some species are winged, others are wing¬ 
less, and still others are winged for a time and then lose 
their wings. 
The body is depressed; the head is closely attached to 
the thorax, which is notched to receive it. The antennae 
are apparently one-jointed, with a terminal bristle or style; 
they are situated in a depression near the mouth. The 
