174 



E. A. ANDREWS. 



The width of the whole set of tubercles is about 2 mm. in a 

 female 48 mm. long, say 3 per cent, to 4 per cent, of the length, 

 which is the usual proportion of annulus to body length. But 

 the posterior tubercle, or " subannulus," as it might be called, 



Fig. I. Ventral view annulus and neighboring region of female 50 mm. 



long, 2flo- 



Fig. 2. Posterior view 

 annulus and neighboring 

 organs of a female 35 mm. 

 long, right handed, 2aQ. 



.^cTT^i 



Fig. 3. Median lengthwise section of an- 

 nulus and neigliboring organs. Same speci- 

 men as in Fig. 2, 2.90 mm., A. 



is only .75 mm. wide and .5 mm. long and thus not the right 

 size for an annulus. 



Fig. I shows, right and left, the basal segments of the third, 

 fourth and fifth legs with the elliptical openings of the oviducts 



