SFARGANUM 



607 



stance. Apparently after weeks or months the cyst-wall may 

 become firm and thick, and encapsulate the worms. This condi- 

 tion may last for years, and apparently can kill the victim, who 

 may be literally ' eaten up of worms.' 



Sparganum baxteri Sambon, 1907. 



This Dibothriocephalid larva was found by Baxter in an abscess 

 in the thigh of a Masai in late German East Africa. 



Fig. 250. — Sparganum baxteri Sambon. 



(After Sambon.) _ . 



Morphology. — 'It has a long unsegmented body, 15 centimetres in 

 length and i millimetre in breadth, with numerous irregular trans- 

 verse folds, and a distinct longitudinal groove on the ventral sur- 

 face. Anterior extremity is 2 millimetres broad, with a completely 

 invaginated head; posterior extremity, i-2 millimetres broad, with 

 a shallow medium slit. 



Leon has described a new tapeworm in man which is referred to the Ligulinae, 

 in which it requires a new genus, called Braunia jassyensis Leon, 1908. 



ORDER III. CYCLOPHYLLIDEA van Beneden. 

 There is only one family with human parasites. 



Family T^niid^e Ludwig, 1886. 



Scolex globular or pyriform, with unarmed suckers, and an armed 

 or unarmed rostellum. Vagina posterior to the cirrus. Mostly 

 parasitic in mammals. Larval stage a cysticercus or cysticercoid. 

 Subfamily i. Dipylidiinse ; Subfamily 2. Davaineiinse ; Subfamily 3. 

 Taeniinae. 



Subfamily i. Dipylidiin^ Stiles, 1896. 



Definition. — Taeniidse, with armed rostellum and unarmed 

 suckers. Genital pores marginal. Genitalia simple or double. 



