BY T. H. JOHNSTON AND M. J. BANCROFT. 189 
have the same general arrangement and structure as in 
M. domestica. Attached to the common oviduct above 
the point of entry of the various accessory glands there 
is a strong band of muscle which probably assists in 
‘supporting the more posteriorly situated parts of the system. 
/2 
At 
The wall of the uterus is composed -of large cells with 
prominent nuclei, the cell cytoplasm not staining readily 
with Delafield’s haematoxylin. If the uterus be crushed 
a fat-like emulsion is obtained, this probably being 
material for the nourishment of the developing embryo. 
The ovipositor is markedly abbreviated. 
Larva. The first larval instar is passed through within 
the uterus of the parent and measures about 1.5 mm. in length. 
