Text-figure 10. 



0-lmm. 



cs.n 



fi.m. 



0-lmm. 



O-lfTim. 



Tanqua tiara. Transverse sections through the anterior region. A, at about the 

 middle of the head-biilb; B, at the back of the head-bulb; C, at the level 

 of the cuticular collar. 



Text-figure 12. 



Text-fig. 11. — Tanqua tiara. Terminal portion of spicule. 



Text-fig. 12. — Tanqua tiara. Tail of female ; a, lateral; b, venJ-ral view. 



18* 



