﻿PARAGONIMIASIS IN THE PHILIPPINES. 35 



Table No. 3.— Showing the principal diagnostic points of fluke eggs — Continued. 





Miricidurn. 



Sporocyst. 



Redia. 



Cercaria. 



Intermediate 

 host. 













Unknown. 



Do. 

 Do. 



Do. 

 Do. 

 Do. 



Do. 



Snails. 



A. ophthalmobium 



Diesing. 

 O.felineus Rivolta 



0. noverca Braun 



0. sinensis Cobbold__ 



F. bitckii Lankester 











Contains ciliated 

 embryo at oviposi- 

 tion. 



(?) Unknown 



Not known 

 do_ .. 



Not known 

 _ .. do 



Not known_ 

 do _ _ 



Contains ciliated 

 embryo at oviposi- 

 tion. 



do 



. _ do_ 



do 



do 



do _ _ 



do — 



F. raihhouisi Poirier_ 

 H. heterophyes Sie- 

 bold. 



P. ivestermanii Ker- 

 bert. 



F. hepatica Linn ... 



F. gigantica Cobbold. 

 D. lanceolatum Ru- 



dolphi. 



G. hominis Lewis 

 and McConnell. 



S. haematobium, Bil- 



harz. 

 S. japonicum Katsu- 



rada. 





do 



do 



. __do___ . 



Thick shell; contains 

 ciliated embryo at 

 oviposition. 



Ciliated; developes 

 after egg leaves the 

 host. 



Conical, ciliated, 

 with one papilla, 

 two cup-shaped eye 

 spots and rudimen- 

 tary intestine. 



do ___ 



__ _ do __ 



do 



do 



do 



do. . . 



Found in s 

 of genus 



mall snails 

 Linnae. 



Whitish 

 and found 

 encysted 

 on plants. 



Contains embryo 

 when oviposited. 















Develops after ovipo- 

 sition. 



Elongate, oval, cili- 

 ated on anterior 

 portion. 





















va : The eggs are oval in shape and vary in color from a reddish-brown 

 to light-yellow, the color depending somewhat upon the stage of their 

 development and the source from which they are obtained and perhaps, 

 also, upon other conditions which are not fully understood. Again, their 

 size varies considerably, and a glance at Table Xo. 3 will show the 

 marked differences in the measurement given by some of the principal 

 observers. I have carefully measured several specimens with the Zeiss 

 photomicrographic apparatus with the following results : 



Length, 0.0062 to 0.0098; average, 0.0074. 

 Breadth, 0.0047 to 0.0063; average, 0.0057. 



Eggs in sections of tissues and those preserved in any other manner 

 contract somewhat and these are not considered in the measurements 

 given above. A well-marked operculum is probably present in all 



