170 TAPEWOUMS OF HARES AXD RABIHTS— STILES. vol.xix. 



Genus CITTOT^^NIA, Riehm, 1881. 



1881, Cittota-nia, Eiehm, Zeitschr. f. d. ges. Natnrwiss., 3 ser., YI, p, 200. Type, 



Ciitota'iiia lattssima Riebm, 1881=- Tivnla denlicuJata Rudolphi, 1804. 

 1881, "■ DipiiJ'uUum, Leuckart,'' 1863, p. p. of Rieiim, Zeitschr. f. d. ges. Naturwiss., 



3 ser., A'l., \>. 200; p. 5^5. Type, Tania canina l.iuniins, 17r)8. 

 1891, Momezia p. p., E. Blaxcuard, Mf^ni. Soc. zool. France, IV, p. 187; p. 444. 



Typo, Tanla cxpansa Kndolphi, 1810. 

 1893, Ctatotdiiia, Railliet, Traitc Zool. iii^d. et agric, I, p. 278. Type, Tcenia 



marmofa', Friilicli, 1802. 



Dia/fnosis. — Cittotamia, Eielim, 1881 : Anoplocephalinip with segments 

 broader than long and longer than thick; end segments in some cases 

 showing a tendency to become longer and narrower. Two fnll sets of 

 genital glands and two lateral genital pores to each segment; gener- 

 ally one, in some cases two, simple transverse tubular uteri in each 

 segment; uterus generally possesses simple proximal and distal diver- 

 ticula. The vagina is ventral of the cirrus pouch on both sides of the 

 segment. Dorsal canal varies somewhat in position, but shows a con- 

 stant tendency to lie between the ventral canal and nerve, especially 

 at the plane of thv3 genital pores. Genital canals cross the longitudinal 

 canals and nerves dorsally. Interproglottidal glands absent. Calca- 

 reous bodies not yet recorded. Eggs with well -developed pyriftuni 

 body, the horns of which are long, generally filamentous, crossing each 

 other. 



Hosts. — Rodents. 



Ty2)e. — Cittota'nia latissima, Riehm, 1881, = Cittotwnia (IcniicuUita 

 (Rudolphi, 1804), Stiles & Hassall, 1896. 



Riehm proposed the genus Cittotcvnia in 1881, with C. latissima as 

 type and only species; his description reads as follows: 



4. Cittotwnia latissima. Die Gattung ist erriclitet rait Riicksicbt auf die merkwiir- 

 dige Aiisbildung dcs Excretionsorganes, welches nicht leiterartig, sondern iiiit .je 

 3-5 vielfach omastomosireuden iiud iu einander iibergeheuden Hauptseitenstiimiuen 

 uud zahlreicbeu, das ganzo Thier iietz-formig dnrcbsetzenden Nobenilsten, raukcu- 

 artig die Tiinie durcbziebt. C. latissima liat doppelte Gescblecbtsorgane, W(>lcbe 

 auf deu zizzcnartig A^orsiiriugenden Hiiiterecken dcr Glieder nacb atisseu miiiiden. 

 Dcr Kopf breiter als bei den vorigen erscheint vorn al)gestntzt, liakenlos. I^iinge der 

 Strobila bis 2i Fuss, Breite der letzteu Proglotbideu bis iiber J Zoll. Wobnthier: 

 Kanincben. 



In the same paper Riehm placed two other double-pored anoploce- 

 phaline cestodes in Leuckart's genus Dipylidinm, i. e., D. pcctinafum and 

 7>. leucl-arti, and later in the same year ^ he rejected his newly estab- 

 lislied genus Cittot<niia, uniting it with DipyUdlnm. 



In 1891 Blanchard - united in the genus Monlvziaiha double-pored 

 anoplocephaline cestodes of rodents with those of ruminants. In 1893 



' Studien an Cestoden. Zeitschr. f. d. ges. Naturwias., 3 ser., VI, 1881, pp. 565, 580. 

 2Mdm. Soc. zool. France, IV, 1891, p. 187. 



