248 



THE ANIMAL PARASITES OF MAN 



At present only two specimens are known ; they came from a 

 black soldier from the vicinity of Lake Nyassa. The cysticercus 

 is unknown ; perhaps it lives in the zebu, the flesh of which the 

 Askaris are in the habit of devouring uncooked. 1 



7. Tcenia confusa, Ward, 1896. 



Length 8\5 m., breadth about 5 mm. The scolex is unknown ; 

 there is no neck ; number of proglottides 700 to 800, always longer 

 than they are broad ; the hindmost measure 35 mm. in length, 4 5 

 mm. in breadth ; the genital pores alternate irregularly behind 



FIG. 173. Tcema confusa ; fairly 

 mature segment. 15/1. (After Guy er.) 



FIG. 174. Tania 

 confusa. Mature seg- 

 ment. 25/1. (After 

 Ward.) 



the middle of the lateral border ; testicular vesicles numerous ; 

 vas deferens not much coiled ; the cirrus pouch thick-walled, 

 elongated and club-shaped, with globular vesicula seminalis ; the 

 cirrus is beset with little hairs ; the receptaculum seminis 

 is globular ; ovary small, double ; each half is bean-shaped ; 



1 v. Linstow, " Tania africana, eine neue Tcenia d. Menschen aus Afrika 

 (C. f. B., P. u. I., '1900 [i], xxviii., p. 485); "Helm. v. Ufer d. Nyassasees 

 (Jen. Zeitschr. /. Naturw., 1900, xxxv., p. 420). 



