MONTGOMERY. — Gordiacea. 
PLATE 2. 
G. aquaticus robustus. 
Female, ventral view of posterior end ; a portion of the brown ring around 
the anus is to be seen (A, 2). 
Female, posterior end, showing the ring of brown color around the cloacal 
aperture (A, 2). 
Male, antero-ventral view of the head end, showing the grooves on the 
surface (A, 2). 
Idem, lateral view. 
Female, head end (A, 2). 
Surface view of the cuticle, Canada balsam, the finest lines drawn only in 
one portion (C, 4). 
