PARASITOLOGY, VOL.VI.NO.4. 
PLATE XXVII. 
5a. 
5b. 
c.g.com. 
p.sl 
medgr.l.- 
1st. Icuc. 
gr.l, 
2nd.Icub. 
gr.l 
3rdlctb 
gr.l. 
vd’. vd. 
■ p.sl 
3rdlat. 
gr.l. 
CL.S.l. . 
Ist.lab.gr.l. 
2 . 
p.sl. 
CL.S.l. 
L.E Robinson del. 
University Press Cambridge. 
