T^NIOID CESTODES OF NORTH AMERICAN BIRDS. 63 



Testicles dorsal and anterior, extending in an unbroken mass from 

 one side of the median field of the segment to the other as far as the 

 excretory vessels. Uterus transversely elongated with numerous out- 

 pocketings, anteriorly and posteriorly. Eggs Avith or without pyri- 

 form apparatus. Adults in birds and mammals. 



Type-species. — Bertiella studeri (Blanchard, 1891) Stiles and Has- 

 sall, 1902. 



BERTIELLA DELAFONDI (Railliet, 1892). 



For description see Stile^. 1896b, p. 57, pi. 20, figs. 257-262 (Tcenia, dela- 

 fondi). — FuHRMANN, 19021, pp. 132-135, figs. 18, 14 {Bertia delafondi. — 

 WoLFFHUGEL, 1904a, -pp. 45^8, figs. 1-4 {Bertia delafondi). 



Hosts. — Golumha livia^ Oolumha livia domestica. 

 Genus ANDRYA Railliet, 1893. 



Generic diagnosis. — Anoplocephalinse : Segments broader than 

 long or as long as broad. A single set of reproductive organs in each 

 segment. Genital pores irregularly alternate, but mostly upon the 

 same side of the strobila. Testicles in median field. A distinct round 

 or elongated pedunculated prostatic gland near ventral excretory 

 vessel on pore side of median field. Female glands in the median 

 field on the pore side of the median line. Uterus net-like, with forked 

 processes, occasionally somewhat sac-like. Eggs with pyriform appa- 

 ratus, the horns of which are rather short. Adults in mammals. 



Type-species. — Andrya rhopalocephala (Eiehm, 1881) Stiles, 1895. 



Genus CITTOT.ENIA Riehm, 1881. 



Ctenotcenia Railliet, 1893 (type, Tcenia marmotce Fkolich, 1802). 

 Ccelodela Shipley, 1900 (type, Cwlodela kuvaria Shipley, 1900; see Fuhr- 

 MANN, 19021, p. 142). 



Generic diagnosis. — Anoplocephalinse : Segments broader than long. 

 Two sets of reproductive organs in each segment. Genital pores 

 bilateral. Genital canals pass dorsal of longitudinal excretory ves- 

 sels and nerves. Interprogiottidal glands absent. Vagina ventral of 

 cirrits pouch on both sides of segment. Uterus single or double (one 

 on each side of median line), transversely elongated, tubular, gen- 

 erally with simple anterior and posterior outpocketings. Eggs with 

 well-developed pyriform apparatus, the horns of which are long, 

 crossing each other, or in some cases without this apparatus (see 

 Fuhrmann, 19021, p. 142, Cittotcenia kuvaria). Adults in mammals 

 and birds. 



Type-species. — Cittotmnia latissinia- Riehm, 1881= Cittotoinia den- 

 ticidata (Rudolphi, 1804) Stiles and HassaU, 1896. 



