577 



Body vvilhout I'Xleinal seg- 

 mentation; head without 

 suckers, or two weak sllt- 

 llke suckers develop 

 (Llsullnae) IJi illl.A. i.. 58a 



Itody with external seg- 

 mentation; head with 

 two elongate slit or 

 srove-llke suckers HOTII 111' ii 'lOI'll A 1,1 NA lO, p. 5Xit 



( 'lenltal 

 J each 



Ital organs single 



segment 



Genital organs double 

 I each segment 



Genital pores lateral (mar- 

 ginal) BOTH RIO-l-.V I'lN I A, p. 08:; 



Genital pores ventral or 

 dorsal p. 58:; 



Penis, vulva, and uterus 

 open ventro-medlan liOTHKI' " :i;ini.\LUa. |). 581 



I'enis and vulva ventro- 

 medlan; uterine pore 

 dorsomedlan I'TVCHOBOTilRIlI.M 



Penis, vulva, and uterus 



open ventrally, KIIAUBKA 



Penis and vulva ventral, 



uterus opens dorsally, ... lil I'Lkgonopop.ijs 



Genital pores ventro-me- 

 dlan (gen. Mesocestolds),. MlOSOCICSToiDi.VAE, p. r.8l 



Genital pores lateral (mar- 

 ginal) p. SS'l 



Head never provided with 

 hooks; uterus transverse 

 or reticulate; egg gener- 

 ally with pyriform body; 

 larval stage not known; 

 adults In herbivorous 

 mammals ANOPLOCIKPIl A IJNAK, p. 584 



Head nearly always pro- 

 vided with hooks (T. sag- 

 inata exception, see also 

 Hymenolepls). 



lOgg with thin outer shell 

 and thidk brown Inner 

 shell; uterus median and 

 longitudinal with lateral 

 branches; larval stage a 

 Cystlcercus, C'aenurus or 

 an Echlnoccus generally 

 In herblvora: adults In 

 carnlvm-ous mammals, .. TAKNIINAK. p. 584 



37-11 



