* 
. larvae of H. microstoma 
130 
does not mention what means were taken to determine the ' 
presence or absence of longitudinal striations. In sections x 
a lesion a transverse section of the larva would clearly revea 
the presence of the longitudinal striations in the bane 
Unless transverse sections were made of the larvae isolate 
from the flies longitudinal striations could not have been 
demonstrated. If all means were taken to determine the 
presence or absence of these striations then, one may asse 
with confidence, that the larvae isolated from the flies by van 
Saceghem were neither larvae of H. muscae nor H. ne 
but the larvae of some other species probably not yet desc 
although there is a possibility that they may have been the 
There is no proof that the larvae used by van ei e 
in his experiments were the larvae of H. muscae, as he c pue 
His experiments are valuable in demonstrating that the ™ i 
larval stage of Habronema is capable of producing a OA 
lesion, but they do not help in the specific determination 
the larva responsible. 
It is Dore to note that Descazeaux records the im 
that a typical “summer sore" may develop without any P a 
existing wound or sore in the skin (“dans certains bem ie 
observe des tumeurs parasitaires sans qu'il soit possib "ab 
déceler la moindre lésion cutanée”).  Railliet mentions t9 
Li : 
se mordant jusqu'au sang"). : 
It is possible that these observations may show ler x 
summer sore" does not always result from the infection. th 
, i ady reached biu 
regard to the probable mode of infection are, therefore, n 
world. It seems probable that the larvae responsible w ip 
production of a ‘‘summer sore” are either that of H a EE 
megastoma or H. muscae, although there is a possibility 
some unrecorded species may also be responsible. 
2. "Swamp cancer" in the Solomon Islands. > 
the courtesy of Mr. John Scott, the prest 
-, Through - j 
. Writer has had an opportunity of examining specimens of à 
» 
