577 



Body without external seg- 



I mentation; head without 

 suckers, or two weak slit- 

 like suckers develop 

 (Ligullnae) LIGULA. p. 583 



iBody with external seg- 

 mentation; head with 

 two elongate slit or 

 [ grove-like suckers BOTHRIOCEPHALINAP:, p. B80 



r Genita 

 o f each 



tal organs single in 



segment p. 580 



Genital organs double in 

 ( each segment p. 581 



Genital pores lateral (mar- 

 ginal) BOTHRIOTAENIA, p. 582 



Genital pores ventral or 

 dorsal P- 5S- 



( Penis, vulva, and uterus 



I open ventro-median BOTHRIOCEPHALUS. p. 581 



5. \ Penis and vulva ventro- 

 I median; uterine pore 

 I dorsomedian PTYCHOBOTHHIU.M 



C Penis, vulva, and uterus 



open ventrally KRABBEA 



1 Penis and vulva ventral, 



I uterus opens dorsally, ... • DIPLOGONOPORUS 



Genital pores ventro-me- 

 dian (gen. Mesocestoids),; MESOCESTOIDINAE, p. 58J 



M 



, Genital pores lateral (mar- 



l ginal) P-5^* 



' Head never provided with 

 hooks; uterus transverse 

 or reticulate; egg gener- 

 ally with pyriform body; 

 larval stage not known: 

 < adults in herbivorous 



mammals ANOPLOCEPHALINAE, p. 584 



Head nearly always pro- 

 vided with hooks (T. sag- 

 inata exception, see also 

 Hymenolepis). 



Egg with thin outer shell 

 and thidk brown inner 

 shell; uterus median and 

 longitudinal with lateral 

 9, J branches; larval stage a 

 Cysticercus, Caenurus or 

 an Echinoccus generally 

 in herbivora; adults in 

 ,-arnivornus mammals, .. TARNIIN.VE, p. 584 



37-11 



