Bull. U. S. F. C. 1899. cTo face page 492.) 



Plate XXIX. 



319 



A 



^:. 









y^-'-'/ 



■ •:•;)' 



327 









329 ■'-'"' 



325 





«^ 



V-- L- t* ", - . u u V . Y -V VJi*v 



"^ 



^5'- 





3'iO. 

 321. 

 :f.>'.'. 



Vislomuin vp. from Slitl*:jtlinnishrniviiii: lnt('r:il \icw i)f inoniilrd 



spwiinc'ii. ■: littl. 

 Headalirt npi-k(i|^aiiio. ,; -lOO. jy/i, I'liar.vnx. 

 [liHlnmnm. Iilsiiiiliim. from ]'lii/ciK Iniuis: siilr vii'W. ale. X <. 

 Ventnil vi^-w. x 14. 

 AntLTior end, side view, x Cn. 



UiKlrlrnnimil dixtiniKK /mm Opsttnus tun. 

 Vent nil view iiflarecrdistomc [See .\, p. ino.] X ■il".. fl.Ocni- 

 lal apeilure; i), iivavv; .vi'. seiniTial vesieli': (. testes; r<i, vilel- 

 liii.' L'liinils; ./p'. (iviiTii: o. mnrsiii. slii.wlni,' spines. X -lUO. 



Zi?<. Ventral view of .smaller distomc. Letters n.s in fig. 324. x 4C.. 

 32i<. Spines on ventral side of neek of pamc. x 400. 

 T.'T, Ventral view of another, vr. Vitelline rosen-oir. Other letters 

 asinti.i,'. 321. [See B. I'M. p. ■ICg.] x 40 

 Ventral view of another. Letters as i!i fijr. .;24. [See li. ib). p. 

 4ri9.j X 4t). 



PosteriorniarRin of latter, x -^O). 



Diatnminti fip, from EncliHyopiia rhnbrhi.-<: ventral view. Letters 

 as in lig. 321. ■; 40. 



328. 



330. 



