O. V. Huffman and Wm B. Wherry 
9 
description, and he gives but few measurements and no drawings. 
Where he cites Bernard as an authority we must call attention to the 
fact that the male Filaria loa reported by Bernard was identified by 
Blanchard. 
Wurtz and Nattan-Larrier(1907) reported a new observation of 
Filaria loa, but they did not describe the Filaria which was removed 
from the eye nor did they exclude other diseases which might have 
caused the various symptoms shown by their patient. 
Thus, with the aid of Ward’s critical bibliography up to Jan. 1st, 1906, 
and a review of the literature since then, we have gone over the various 
descriptions of Filaria loa, and these show the necessity of recording 
further descriptions of the adult form of this species. 
The specimens examined by us were kindly placed at our disposal by 
Dr Emil Blunden, of Cincinnati, who had removed them himself from his 
wife’s eyes. The infection was apparently contracted in 1907 outside of 
Batanga, Cameroon, West Africa. In all seven loa have been extracted 
to date. Our specimens comprise two females extracted in Africa; a 
male, and one female, which had been broken off 20 mm. back of the 
head, extracted in America. The first three specimens were in perfect 
condition and had been preserved in 10 “/o chloral hydrate. Before 
examination they were placed in 70 "/o alcohol containing 5 “/o glycerine 
heated to 60° C. These uninjured specimens were of a brownish yellow 
colour and became sufficiently clear for the purpose of studying their 
internal structure. The thread-like body of each remained in a slightly 
irregular, compound curve. Each worm without any stretching and 
without difficulty was temporarily placed upon a glass slide and covered 
with alcohol-glycerine solution sufficient to support a cover slip. In 
this way the worm could be turned and observed from every aspect. 
We paid considerable attention to those structures which have been 
variously described by others. The fourth specimen had remained in 
tap-water for 48 hours. It did not become clear and remained very 
white. 
Before describing each of these specimens separately we will mention 
wherein our observations differ from those of previous authors: we do 
not find the bosses on the cuticle to be so high as previous observers 
found them. Their average height upon our specimens is equal to one 
half the thickness of the cuticle. We find the cuticle thicker than that 
of the specimens either of Looss or of Blanchard. Ludwig reported the 
cuticle as thicker than we do but he was working at a female specimen 
which had been injured and' partly emptied of its intestine and genital 
