TJENIOID CESTODES OF NORTH AMERICAN BIRDS. 103 



Genus SHIPLEYA" Fuhrmann, 1907. 



Generic diagnosis. — ^Acoleidse: Scolex without rostellum, but with 

 apical papilla. Single set of reproductive organs in each segment. 

 Male genital pores regularly alternate. Cirrus conical in shape, 

 armed with large hooks. Yolk gland dorsal of ovary. Vagina rep- 

 resented only by a small seminal receptacle in central portion of 

 segment. Uterus at first ring shaped, later becomes much branched. 

 Adults in birds. 



TyjJe-sjJecies. — SMpleya inermis Fuhrmann, 1907. 



Genus DIOICOCESTUS Fuhrmann, 1900. 



Generic diagnosis. — Acoleidse: Dioecius, entire strobila male or 

 female. Female thicker and broader than male. Male with a 

 double set; female with a single set of reproductive organs in each 

 segment. Irregularly alternating vagina reaches almost to the edge 

 of the segment. Eggs with three envelopes. Adults in birds. 



Type-sj^ecies. — Dioicocestus jmronai Fuhrmann, 1900. 



DIOICOCESTUS ACOTYLUS Fuhrmann, 1904. 



For description see Fuhrmann, 1904a, pp. 327-331; 1904b, pp. 131-148, pi. 10, 

 figs. 2-11. 



Host. — Colymhus dominicus. 



DIOICOCESTUS PARONAI Fuhrmann, 1900. 



For description see Fuhrmann, 1900c, pp. 363-366, figs. 1-3. 

 Host. — Plegadis guarauna. 



Family AMABILIID^ (emended name) . 



"Amabilinidse" Fuhrmann, 1907. 



Family diagnosis. — Tsenioidea: Scolex with armed rostellum; 

 suckers usually unarmed. Segments with lateral appendages. A 

 double or single set of reproductive organs in each segment. Male 

 genital pores marginal. Vaginal opening lacking, replaced by the 

 marginal, ventral, or dorsal opening of an accessory genital canal. 

 Egg with thin transparent shells. Adults in birds. 



Type-genus. — Amabilia Diamare, 189.3. 



Genus AMABILIA Diarnare, 1893. 



Aphanobothrium Linstow, 1906 (type, A. catenatum Linstow, 1906; see Fuhr- 

 mann, 1908a, p. 88). 



Generic diagnosis.— Amahiliidad: Scolex very small with armed 

 rostellum. A double set of male reproductive organs in each seg- 

 ment, with two pores, one on either side of the segment. Cirrus 



oThis genus and its type-species mentioned by Fuhrmann in 1907 (1907a, p. 294), 

 were described by him in 1908 (1908b, p. 70). 



