Ld 
102 
all dead and degenerating. The measurements of some of 
these longer forms were 151°5 p, 318 p, and 424 p long — 
tively. Unfortunately, the preparations were lost throug E 
accident before a more complete examination could be - : 
The subject was not pursued an further, for at the yd 
it was thought that it had little bearing on the matter unde 
investigation. | i ds 
arvae of H. microstoma.—Larvae obtained from 
: on d 
to the bulb. These were placed in saline solution in p 
chambers. One set was left at room temperature, 2 boscis. 
one hour, and when examined no larvae had left em d o 
to contain extremely active larvae. . The proboscides FA 
then examined, and only an occasional larvae was foun 
have been unable to leave the proboscis. larvae 
periments made to determine the power of the la 
to penetrate filter paper gave negative results. 
2 ! T 
SUMMARY AND DISCUSSION OF THE SALIENT Ousmane 
aoronema muscae was found to pass through its rage 
es in Musca domestica, but showed no developmen 
H ossess 
| Stomozys calcitrans. . megastoma was found to p 
similar life-history 
toma was found to pass through its larval stages 
x - micros di 
in S. caleitrans, and show sometimes an aberrant developme 
