Annelidm. 



219 



proved occasionally fatal to pigeons. Jousset dealing with the 

 tropical species found that the venom caused agglutination of the 

 red blood globules, blocking of the capillaries, and gangrene. 

 The tail strikes upward and the animal may be safely handled by 

 seizing the last caudal segment. 



ANNELID^ (anellus, a ring). Formed of rings. 



VERMES. HELMINTHES. WORMS. 



Cestodes (kestos girdle). Plathelminths. Tapeworms. 

 Flat, segmented worms ; no true digestive organs ; hermaph- 

 rodite. 



T^NIA (TAPEWORMS) PROPER. 



CysTOT^ni^. Caudal vesicle in cystic form, is a continuous de- 

 velopment from the head. 



In Larval or Cystic Form. 



Cysticercus. Each ovum develops one cyst with one head. 

 Coenurus. Each ovum develops one cyst with many (100 

 to 200) heads. 



Echinococcus. Each ovum develops one cyst, which 

 forms daughter and granddaughter cysts with or without 

 heads. Multilocular. 



T^NIJB WITH CYSTICERCUS IvARV.<E. 



Cysticercus Larva. Habitat. 



C. TenuicoUis Peritoneum, pleu- 



(tenuis delicate, ra, liver. ' Ox, 



colle neck) sheep,goat,pig. 



Connect, tissue 



cat, man. 



Connective tissue 

 of muscles. 

 Calf. 



C. Medioca- 

 nellata (me- 

 dius middle 

 canal). 



C. Cellulosa. 



Connective tissue 

 of muscles. 

 Pig, dog, man. 



Mature Tcsnia. 

 T. Marginata. 



Habitat. Small intestine. 

 Dog. 



T. Mediocanellata (Sag- 

 inata). 



Habitat. Small intestine. 

 Man. 



T. Solium. 



Habitat. Small intestine. 

 Man. 



