INDEX. XXX1X 
Orver I].—APODA— (continued ). 
Lithoderma, 401 
Sipunculus, 402 
Bonellia, 402 
Thalassema, 402 
Thalassema proper, 403 
Echiurus, 403 
Sternapsis, 403 
CLASS II.—ENTOZOA. 
Orprer I.—NEMATOIDEA, 404 
Filaria, 405 
Trichocephalus, 405 
Trichostoma, 406 
Oxyuris, 406 
Cucullanus, 406 
Ophiostoma, 406 
Ascaris, 406 
Strongylus, 407 
Spiroptera, 408 
Physaloptera, 408 
Sclerostoma, 408 
Liorhynchus, 408 
Pentastoma, 408 
Prionoderma, 499 
Lernza, 409 
Lernza proper, 409 
Pennella, 410 
Sphyrion, 410 
Anchorella, 410 
Brachiella, 410 
Clavella, 411 
Chrondracanthus, 411 
Nemertes, 411 
Tabularia, 412 
Ophiocephalus, 412 
Cerebratula, 412 
Orver IL—PARENCHYMATA, 412 
Fam. 1.—Acantuocrruata, 412 
Echinorhynchus, 412 
Heruca, 413 
Fam, 2.—Trematopea, 413 
Fasciola, 413 
Festucaria, 414 
Strigea, 414 
Caryophyllzus, 414 
Distoma, 414 
Holostoma, 415 
Polystoma. 415 
