FILARIA LOA 



III 



Indian Islands. The adult females, only, were found by 

 Galgey in subperitoneal tissue. 



The sharp-tailed, sheathless embryos are found in 

 the blood at all times and may be numerous. They are 

 indistinguishable from embryos found in British Guiana, 

 known as F. ozzardi. F. ozzardi is probably widely dis- 

 tributed amongst the aborigines in Central America. 



Female adult forms were found in one case, also in 

 subperitoneal connective tissue, but these are believed by 

 Leiper to be specimens of F. bancrojti. If this is correct 

 it will be the first recorded case of F. bancrofti in 

 a native of the interior of British Guiana. No embryos 

 of F. bancrofti were found in the blood in the course 

 of numerous examinations. The adult forms presented 

 certain differences from those found by Galgey. Till more 

 specimens of the adult forms, including the males, of the 

 West Indian and South American sharp-tailed embryos 

 are found it is better to consider them doubtfully as 

 belonging to distinct species. 



Neither F. ozzardi nor F. demarquayi is known to cause 

 any disease. 



FILARIA LOA (LOA LOA). 



Filaria loa is widely distributed on the West Coast 

 of Africa, and in some places, as in Nigeria, is a very 

 common parasite, but it does not occur in Asia or 

 America. Europeans are often infected. 



The parental forms are strong, active filariae, and differ 

 in many important respects from the filariae already 

 described. The cuticle is studded over with small 

 bosses. The worms are comparatively short and broad, 

 and very muscular. Immature forms are often met with. 



The Male. The papillae, three pairs of pre-anal and one 

 pair of post-anal, are large and prominent, and there is a 

 second small post-anal pair. The spicules are short and 

 unequal (figs. 49 and 50). 



The adults live in the connective tissues and the 

 muscles. They move actively, and frequently travel 



