DESCRIPTION OF PLATE I. 



1. Mf. diurna ? embryo Filaria loa. 



2. Mf. philippinensis ,, Filaria philippinensis. 



3. Mf. nocturna ,, Filaria bancrofti. 



4. Mf. perstans ,, Filaria perstans. 



5. Mf. demarquayi ,, Filaria demarquayi. 



6. Portion of uterine tube of F. bancrofti showing eggs. 



7. Portion of uterine tube of F. bancrofti showing embryos coiled 



up in egg-capsules. 



