GENUS AUCHMEROMYIA 327 



also oviposit in man's ears and nostrils, especially in those of people 

 who have offensive discharges. Freire states that the female will also 

 deposit its eggs in decomposing carcases. 



It is important for the worker to know exactly how to breed the Blow 

 flies, for any of the species may act as a carrier of the bacteria of cholera, 



typhoid and dysentery. As in the case of the Sarco- 



u -j j *u A A u A t Breeding Techinque 



phagidae, some decaying meat or the dead body of a 



small animal should be placed in the open in order to attract the female 

 flies, which may either be caught with a net or allowed to lay their eggs in 

 body of the animal. Another simple way to obtain their eggs is to 

 catch a number of flies round a filth trench, slaughter house or from 

 stalls in the bazaar, and to place them in large test tubes, in which some 

 of the gravid females will lay their eggs ; a small piece of meat placed 

 at the bottom of the tube will tempt the flies to deposit their eggs. The 

 meat containing the eggs, or the eggs themselves, should be transferred 

 to a larger quantity of meat, which should then be placed in the mud 

 enclosure (see page 314) as in the case of Sarcophaga. The larvae 

 on hatching out grow rapidly, and when mature pass into the sand to 

 pupate ; the puparia can be collected later and placed in the fly jars as 

 described in the case of Musca. 



When the worker has a case of cutaneous myiasis to investigate, he 

 should, as soon as possible, obtain several specimens of the living larvae 

 and place them in some meat in the mud enclosure. 



On recovering the pupae he will be able to hatch Wentjf cation of 



species causing 

 out the fly, and will then be in a position to have it myiasis 



identified. This little experiment is frequently omitted, 

 and instead, some of the larvae are preserved in alcohol, the observer 

 being under the impression that the species can be determined by the 

 examination of the larvae. At present practically nothing is known 

 regarding the taxonomic characters of most of the larvae of the Callipho- 

 rinae, and it is almost impossible by examining the larvae alone to 

 determine the species. 



GENUS AUCHMEROMYIA, BRAUER AND BERGENSTAMM 

 Large brownish yellowish flies. Cheeks broad and prominent. Last 

 segment of the abdomen without prominent bristles. 



This genus contains the species A. luteola, Fabr., the larva of which 

 is known as the ' Congo Floor Maggot ', and which has the habit, unique 

 amongst dipterous larvae, of sucking human blood. Although the fly 

 has long been known to Dipterologists, it was not till 1904 that Button, 



