no. 1844. CESTODE FROM AFRICAN BUSTARD— RANSOM. G43 



In the former genus four species are known — Idiogenes otidis 1 

 Krabbe, 1868, which is the type of the genus, Idiogenes jiagellum 2 

 (Goeze, 1782) Kholodkovski, 1905, Idiogenes grandiporus Kholod- 

 kovski, 1905, and Idiogenes horridus Fuhrmann, 1908. 



In certain respects Sphyroncotsenia uncinata resembles the genus 

 Idiogenes. The hammer-shaped rostellar hooks, the unilaterality 

 of the genital pores, and the presence of a para-uterine organ are char- 

 acters common to both. Distinct differences, however, are seen in 

 the arrangement of the hooks on the rostellum (10 or 12 rows in the 

 one case and 2 rows in the other), in the comparatively large size 

 of the strobila and the great development of the musculature of 

 Sphyroncotsenia uncinata and the small size of the strobila and weak 

 development of the musculature of Idiogenes, in the small size of the 

 cirrus pouch relative to the size of the segment and absence of retrac- 

 tor muscle in the former case and the relatively large size of the cirrus 

 pouch and presence of retractor muscle in the latter, in the numerous 

 testicles of the former and the few testicles 

 of the latter, and in the distinct displace- 

 ment of the female glands toward the pore 

 side of the segment in Sphyroncotsenia unci- 

 nata and their practically median position in 

 Idiogenes. Although the resemblances be- 

 tween Sphyroncotxnia uncinata and the genus 

 Idiogenes indicate that they are somewhat 

 closely related, they exhibit too many dif- '/tomm. 



ferences to be placed together generically. fig. 7.-sphyroncotjenia unci- 



In the other genus of Idiogeninoe mentioned NATA - EGG - enlarged. 

 above two species have been recognized, namely, Chapmania tauri- 

 collis 3 (Chapman, 1876) Monticelli, 1893, which is the type species 

 of Chapmania and Chapmania tapilca 4 Clerc, 1906. 

 • Sphyroncotsenia uncinata resembles the genus Chapmania' in a 

 number of characters, as follows : It is a comparatively large species, 

 with well-developed cortical parenchyma and musculature. It has 

 rostellar hooks of similar shape. The genital pores are unilateral, 

 as in the type species of Chapmania. The cirrus pouch does not 

 extend inward beyond the limits of the cortical parenchyma. The 

 vas deferens is without seminal vesicle and is much convoluted. The 



i Kowalewski (1906, 683-086) and Fuhrmann (1908, 49) consider Idiogenes otidis and /. grandiporus to be 

 identical but Kholodkovski (1905; 1906) and Clerc (1906, 724) hold to the view that two distinct species 

 may be recognized. Under the circumstances it seems necessary to recognize both species until more 

 certain evidence of their identity can be obtained, the evidence thus far available not being sufficient to 

 prove that the two species are the same. 



^Synonyms: Taenia flagellum Goeze, 1782; Haly sis flag ellum (Goeze) Zeder, 1S03; Txnia mastigophora 

 Krabbe, 1879; Idiogenes mastigophora (Krabbe) Kholodovski, 1905; Davainea ( Chapmania) longicirrhosa 

 Fuhrmann, 1906. 



3 Synonyms: Txnia tauricollis Chapman, 1876; Txnia argentina Zschokke, 1888; Davainea tauricollis 

 (Chapman) Fuhrmann, 1896; Capsodavainea tauricollis (Chapman) Fuhrmann, 1901. 



1 Synonym: Idiogenes tapica Clerc, 1906. 



