LIFE-CYCLE OF CERTAIN AUSTRALIAN BLOWFLIES. 23 
commenced. The meat was placed in a bare shallow dish so 
that the larvee had to make a special effort to leave it, thus 
ensuring that none did so before they were fully fed. If the 
meat were placed on sand some maggots would attempt to 
pupate in the dish, and this would necessitate disturbing the 
feeding larve in order to procure such pup. Very rarely did 
maggots pupate in the meat, and then only if it were allowed 
to dry out. 
TABLE INDICATING DURATION OF VARIOUS STAGES. 
The tables below indicate a complete tabulation of 
individual specimens bred through from their deposition to 
emergence. All intermediate stages which failed to complete 
their development have been excluded; in other words all 
larve, prepup, or pup that died before emergence occurred, 
or were destroyed by parasitic agencies, have been omitted from 
this particular record. 
The first entry in the table is intended to record that one 
specimen, deposited by its parent on the 12th October, finished 
its feeding and left the meat in which it was being bred, on 
the 16th, so that its larval period was four days. This specimen 
pupated on the 18th, thus requiring a further two days to 
complete its pupation, i.e. the prepupal stage was two days 
and the period from deposition to pupation (total larval period) 
was six. By the 26th, the imago had emerged, the pupal 
period being eight days and the total time from deposition to 
emergence fourteen. 
The species of Lucilia used was the common blue or green 
bottle of Brisbane, and generally regarded as L. sericata. 
Tables 1 to 4 refer to it. 
