tnesticatol liirds. 'I'lic 

 found in (Icimcft;! '^n 

 .Lionel In], ;iiid oiif H|)f(i 

 Rjiillicfl, isn.",. is found 



Rubl'amlly 



(IS5S. Malaf-nlrvplrlota Welnland— SnTt-shplI l(ip<nvfirins: ISGH. 



Oystoldpap Tx-iinknrt; OysfnlrlpI: nystnldotaomlap; TaPnln 



(Mlorotaenla). 



r)la»?nnsla: Hpart with 4 siiPkPi'F: rostplliim Ronprally armpd; 

 ppnlfal pnrps latpral fmarfftnal). sinprle or rloiiblp; prr with thin 

 transpnrpnt shells, frpquently arranged In pre: sacs. In some 

 pasps spattered thrnncrh the segments: larvnl stapp a py.'tlcer- 

 pold: adults In hlrds and mammalfi, Typp s-pniis: nipylldhim 

 •n. T,piiPknrt. isn?. 



Probably nil of Hif Tacniidac of birds bolonjr fo this 

 subfamily, which is at presonf divided into nine jjenora 

 Tlic tapeworms of domesticated fowls are cnnflned to 

 the five fjenera; fotnjinia, Davainea. Dicranotania. 

 Drepanidotaenia, and Echinncotyle. 



I. Genital pored rlnuble and oppo»lle. Stickem unarmed. 



Three different (renera have been proposed In the subfamily 

 Dlpylldllnae for forms with doiiblp and opposite genital pores. 

 but they have been very poorly defined from one another. 



The prenuR DIpylldlum pnntalns speeles which Infest mammals 

 and with D. oanlnum as type speoles will unquestionably 

 stand as a good genus. In birds several forms with double 

 genital pores have also been described. Taenia digonopora 

 Pasquale In chickens and Taenia blfarla Slebold In Aythya 

 nyroca (Nyroca leucophthalma) have been placed by Dlamare 

 (1893A) In a new genus Cotugnia, which, however, he falls to 

 define distinctly from DIpylldlum, and which must unquestion- 

 ably bp suppressed unless bptler characters are brought to Its 

 support. Dlamare (1S9.3A) has also proposed the genus Ama- 

 bllla tor Taenia lamelllgera In the flamingo (Phoenlcopterus 

 antlquorum). 



Too little Is known of the other forma described as possess- 

 ing double genital pores to allow a determination of their gen- 

 eric afUnltlps. and spppulallcjti In this direction would simply 



37»-lI 



