2/2 
destroys the nucleus. (2) The encysted form becomes 
embedded in the nucleus. 
5. H. mabuiae. —In a lizard Mabuia vittata from 
Berberi, 15 by 5*5//, has a destructive action on 
nucleus. Resembles closely H. sergentium. 
Fig. 86. Shewing disintegrating action on nucleus 
6. H. varani. —In Varanus , spp., in India and 
Africa. The parasite is endoglobular and occurs in 
three forms. (1) Small round or oval forms, 3-4^, 
with a relatively large nucleus. (2) Elongated forms, 
7-10 by 3 - 4m, pointed at one end, the nucleus also 
being elongated. (3) Vermicules (endoglobular), 14 by 
Fig. 87. Hg. varani 
3^. One end is recurved. The length of this end 
may be quite short, or as long as the other limb (Fig. 
87). 
7. H. borreli. —In Varanus griseus , resembles the 
former. 
