EXPI.ANATION OF PLATE I. 



Fig. I. — Phyllobothrium lactuca, van Ben., a mature free pro- 

 glottid showing the anatomy. 



„ 2. — P. foliatum, Linton, surface view of the head. 



„ 3. — P. joliatum, a mature proglottid showing the anatomy. 



,, 4. — P. pammicYum , Shipley and Hornell, surface view of the 



head. 

 ,^ 5. — P. hlakei, Shipley and Hornell, surface view of the head. 

 ,, 6. — P. compacta, sp. nov., entire worm. 

 ,, 7. — P. compacta, surface view of the head. 



REFERENCE LETTERING. 



C.=Cirrus-sac. O.D.=Oviduct. Ov.=Ovary. P.=Penis. P.U. 

 =Primary uterus. R.S.=Receptaculum seminis. S.G.=Shell- 

 gland. S.U.=Secondary uterus. T.=Testis. V.= Vitelline glands. 

 Va.=Vagina. V.d.^Vas deferens. 



