NO. 1105. PBOCEEDINGS OF THE KATWXJL MUfiEUM. 149 



rudimentary and not always evident ("? or entirely absent); genital 

 pores generally laternl : uterus without special pore. 



Type genus. — Twrna^ Liuuieus, 1758. 



All of the leijorine cestodes known at present belong to tlie family 

 TtBniidiB, in wliicli most authors place indiscrimiiiately all tapeworms 

 provided with four cup-like suckers. Were this family subjected to 

 revision by any set of zoologists exceiit helminthologists, it would 

 undoubtedly soon be raised to superfamily rank at least, and divided 

 into several families, subfamilies, and numerous genera. IMost hel- 

 minthologists, however, are very conservative in proposing genera, 

 even when very prolific in establishing species! A superfamily T;pni- 

 oideae will, I believe, soon be established, but this step it will be well 

 to postpone until the cestodes of birds are brought into better order. 



ANALYTICAL KEY TO THK GENERA OF ADULT TAPEWORMS FOUND IN LEPUS.' 



1. Head, unarmed; geuital pores single or double; ova with pyriform body. 



Jnoplocephaliruc 2 



Head armed with uiimeroiis hooks ou the rostellum and suckers; genital pores 

 single ; ova without pyriform body Darainea (p. 194.) 



2. Genital pores double; single pores a rare exception and then in strobilas contain- 



ing double pores Cittofwnia (ji. 170.) 



Genital pores single 3 



3. Genital pores unilateral; testicles unilateral or nearly so, in portion of median 



iield ojiposite pores; uterus transverse with jiroximal aud distal egg pouches; 



no separate and distinct prostatic gland present Anoplocepliala (p. 150.) 



Genital pores irregularly alternate; testicles extend across the median field to or 

 beyond the ovary ; uterus ajipears as a network or as a transverse tube with 

 egg pouches 4 



4. Separate and distinct jirostata wanting; uterus a transverse tube with iiroximal 



and distal egg pouches Beriia (p. 160.) 



Separate and distinct prostata present; uterus reticulate; genital pores show a 

 markeil tendency to uuilaterality Andrija (p. 154.) 



STibfamilj- .A.]N"01?IL.0CK!PH AIjUSTvE, R. J31an.eliai-d, 1S91. 



Diagnosis. — Tteniidai with unarmed head; genital pores lateral, 

 single or double; segments nearly alwajs broader than long; uterus 

 transverse and tubular, or reticulate; ventral canals always^ well devel- 

 oped; dorsal canals generally less developed; ova generally with pyri- 

 form body; calcareous bodies present or absent. 



Type genus. — Anoijlocei)hala, E. Blanchard, 1848. 



Riehm^ in 1881 placed the three double-pored rabbit cestodes known 

 to him in the genera Diinjlidinm, E. Leuckart, and Ciitotmnia, liiehm, 

 and the single-pored forms in Twnia; in his second^ paper he placed 



1 See also p. 213. 



-Zeitschr. ges. Naturw., 3 ser., VI, p. 200. 



^Studien an Cestoden, Zeit. ges. Naturw., 3 ser., \i, ])p. r)4r)-(il0. 



