Xl INDEX. 



Order 11.— FARENCHYMATA— (continued). 

 Cyclocotyle, 415 



Tristoma, 415 

 Hectocotyle,416 

 Aspidogaster, 416 

 Planaria, 416 

 Prostoma, 417 

 Dcrostoma, 417 



Fam.Z. — T^NioiDEA, 417 

 Taenia, 417 

 Tricuspidaria, 418 

 Bothryocephalus, 418 

 Dibothryorhynchus, 419 

 Floriceps, 419 

 Tetrarhynchus, 419 



Tentacularia, 419 

 Cysticercus, 419 

 Coenurus, 420 

 Scolex, 420 



Fam. 4. — Cestoidea, 420 

 Ligula, 420 



CLASS III.— ACALEPHA. 

 Order I.— SIMPLICIA, 421 



Medusa, 421 



Medusa proper, 422 

 ^quorea, 422 

 Phorcynia, 422 

 Foveolia, 422 

 Pelagia, 422 

 Cyansea, 423 

 Rhizostoma, 423 

 Cephea, 424 

 Cassiopea, 424 

 Astoma, 424 

 Berenix,424 

 Eudora, 425 

 Carybdea, 425 

 Beroe, 425 

 Idya, 426 

 Doliolum, 426 

 Callianira, 426 

 Tanira, 426 

 Alcinoe, 426 

 Ocyroe, 426 

 Cestum,426 



Porpita, 427 



Velella, 427 



