O. V. Huffman and Wm B. Wherry 
11 
was in that portion of his specimen which had been mutilated. He 
also mislocated the anus. 
Scheube ® (1903) states that the Filaria loa female rarely attains 
the length of 70 mm. Maurel’s case, reported by Trucy in a paper on 
the Guinea-worm, is responsible for this statement. Scheube is also 
in error when he refers to GuYOT 1838 under the Literature. It 
should be Guyon. (Ward, 1906.) 
Description of our Specimens. 
The Male. 
External structure. The male is 35 mm. long. The tip of the 
anterior extremity is 0‘056 mm. in diameter. At the centre of the 
tip is the oral opening. At the base of the cephalic cone, which is 
0'07 mm. from the tip, it is 0T4 mm. in diameter. 
From the base of the cephalic cone the body gradually increases in 
diameter until it reaches its greatest circumference with a diameter of 
0‘35 mm. at a distance of 0'7 mm. from the anterior end. This maximum 
diameter of 0'35 mm. is maintained throughout the remainder of the 
anterior one-sixth of the entire body length whence it gradually and 
evenly diminishes in circumference down to the rounded tip of the 
posterior extremity. The posterior extremity is curved ventrally like 
a shepherd’s hook and presents the ano-genital opening on its ventral 
aspect, 0T12 mm. distant from the tip. At the ano-genital opening it 
is 0T68 mm. in diameter. 
The cuticle is 0'012 mm. thick. At the extremities it gradually 
becomes reduced in thickness reaching a minimum of 0'008 mm. It 
consists of an outer harder layer and an inner softer layer. With the 
exception of that covering the anterior extremity for a distance of 
3’5 mm. from the oral opening and the posterior extremity for a dis¬ 
tance of 1T9 mm. from the tip of the tail the cuticle presents, at 
irregular distances, bosses which arise from the outer layer of the 
cuticle. These bosses are not hemispherical. Their average diameter 
at the base is 0'018 mm., and their average height is 0 006 mm. or one 
half the thickness of the cuticle. 
On the ventral aspect of the posterior extremity there are five pairs 
of papillae. The anterior pair is the largest. They successively decrease 
in size from the anterior to the most posterior pair which is almost 
at the tip. The ano-genit5,l opening is partially between but mostly 
