T^NIOID CESTODES OF NORTH AMERICAN BIRDS. 67 



in each segment. Genital pores irregularly alternate. Uterus sac- 

 like, slightly bilobed, persistent. Adults in birds. 

 Type-genus. — Ophryocotyle Friis, 1870. 



Genus OPHRYOCOTYLE Friis, 1870. 



Generic diagnosis. — Ophryocotylina3 : With the characters of the 

 subfamily. 



Type-species. — Ophryocotyle proteus Friis, 1870. 



OPHRYOCOTYLE INSIGNIS Lonnberg, 1890. 



For description see Lonnberg, lS90b, pp. 15-18. — Blanchard, lS91t, pp. 

 442-443.— FUHRMANN, 1909, pp. 94-97, figs. 1, 2, 4-6. 



Host. — Hcvmatopus ostralegus. 



OPHRYOCOTYLE PROTEUS Friis, 1870. 



For description see Blanchard, lS91t, pp. 440-442, fig. 20.— Stiles, lS96f, 

 p. 56, pi. 19, figs. 252-255.— FUHRMANN, 1909, fig. 3. 



Hosts. — zEgialitis hiaticida., Calidris leucophcea., Erolia ferruginea.^ 

 Pelidna alpina^ Larits canus. 



OPHRYOCOTYLE, species Lonnberg. 



Listed by FuHrmann, 1908a, p. 159. 



Host. — Mergus serrator. ' 



SubfaiTiily TiJsSSrA.J.N'E.Tl^f^^E. Braun, 1900. 



SuhfamAly diagnosis. — Davaineidfe : Suckers armed around the 

 periphery with several rings of booklets which are unstable or per- 

 sistent. Uterus breaks down into numerous egg cai^sules, each con- 

 taining one or more eggs. Para-uterine organs not present. Adults 

 in mammals and birds. 



Type-genus. — Davainea Blanchard and Railliet, 1891. 



Genus DAVAINEA Blancliard and Railliet, 1891. 



Bothriotcenia, Railliet, 1892 (tjiie. Di'bothrium longicolle Molin, 1858; 

 see LtJHE, 1899c, p, 40). 

 Generic diagnosis. — ^Davaineinaj : A single set of reproductive or- 

 gans in each segment. Genital pores unilateral or occasionally irreg- 

 ularly alternate. Uterus breaks down into egg capsules each contain- 

 ing one or several eggs. Adults in mammals and birds. 



Type-species. — Davainea proglottina (Davaine, 1860) Blanchard, 

 1891. 



DAVAINEA ANATINA Fuhrmann, 1908. 



For description see Fuhrmann, 1909, p. 107, fig. 16. 

 Host. — Anas platyrhynchos domestica. 



* DAVAINEA CESTICILLUS (Molin, 1858) Blanchard, 1891. 



For description see Ransom, 1905b, pp. 283-285, figs. 8, 14, IS, 26, 32. 



Hosts. — ^'Meleagris gaUlopavo domestica.^ ^Gallus gallus domes- 

 ticus. 



