37. 



Faust, seems very improbable in such a well defined family 

 and especially mo since Looss, lebour, Ocrt rmd myself h--ve 

 found 3, uniform type with two ex^rotory pore'-- ih th ^. 



Nowhere in the middle or posterior partn of three of 

 his onroari.>.e 'ioea i'-aurt fin<i flame cells. 7hat they exist 

 there I feel quite positive. The failure to see flame cells 

 and tubules in these regions is. probably due to the heavy 

 oystotfenous glands in these three species. Only at the 

 anterior end wn<r< there ar<s no oystcgenous glands doe 

 he find the flame oella. In Oe^rcaria aoan the s toma , however, 

 he shows flame aelln directly ocnneoted ein^ly vith tubes 

 which are equivalent in the other pe<ii*8 to the anterior 

 tuber, of ts* bladder. Th->t these flame oells join dire-oily 

 to the tubular division nf tiie bladder is improbable sinoe 

 in no oeroaria w^iere the exoretory ay? tern hue been carefully 



completely worked out doeci this occur. Kather do the 

 flame cells by means of their capillaries, unite with 

 acce' Tollectin.';', tubules* 



At the anterior end in each of the^e four new echinoatoiae 

 cercariae described by #iu?t, he shows three flaaie cell 3 

 on a aide. These three flame cells are probably present 

 in all eohinoBtcrae oercariae. Iheir arrangement and attach- 

 ment is probably a family characteristic. 1 feel quite sure, 

 however, that the.ne three flame cells do not unite *ith the 



tubes of the bladder aa s>iown in GerQaria 

 and Geroaria ehji.golenata or -wen as in CerQaria 



s r oan tho.a to ma. As stated above, capillaries are not Vnown 

 to unite with parts of the bladder* Hie arran^emcmykn d 

 ttttaohxaont of these three anterior flame cells aB shown 

 in ^eroari^ VIJ;IQ a (feust 1917, fig. 138) is much like the 



