PLATES 1, 2, 3, 4 
EXPLANATION OF FIGURES 
I. Photograph taken with a magnification of about ten diameters, of the 
posterior face of the first stylet of the left side. 
II. Photograph of the same, taken from the median side, but diagonally, so 
that the posterior side is also shown in part. 
III. Photograph of the same from the anterior face. 
IV. Photograph of the same from the external face. 
V. Photograph taken enlarged about ten diameters, of the second, or accessory 
stylet, of the left side of adult male. Posterior face. 
VI. The same from the median face. 
VIt. The same from the anterior face. 
VIII. The same from the external face. 
