92 Annals Entomological Society of America [Vol. VIII, 
even be recognized and sharply characterized in the larval 
state, those of the Cyclorhapha on the other hand disappear 
under the pen. 
‘“‘No one has up to now characterized the subfamilies of the 
muscids [Muscoidea] in our sense as larve; indeed, not even 
for such obvious forms as Oestrines, Muscines and Sarcopha- 
gines can characters be determined. We must leave it to the 
future to find such characters or to confirm their non-existence. 
It can be readily understood that the slight characters by 
which the imagines of these subfamilies are separated, although 
constant, find none, or a hardly appreciable, expression in the 
fundamental larval organization.” 
