I04 



Sl^riTITSONTAN INSTITUTION 



Fig. 8,3. — PUniorhis c/iiadcloiipcnsis, the intermediate host of the blood fluke 

 Schisfosnuui niansoiii. which produces the dreaded disease known as bil- 

 harziosis, from the island of St. Christopher. 



Fig. 04. 



i.^e iji Saiila Lucia iii.»iu llie sea lu the >< 

 showing its extremely rugged character. 



... I he island, 



