20 Prot. 
PROTOZOA. 
sphcuray Cromyosphcerium, Stylocromyum^ Cromyostylus, Siaurocromyum, 
Cromyostaurus, Hexacromyum, Hexacromydium (p. 453), Cromy echinus ^ 
Cromyodrymus, Caryosphcera^ Caryoxiphus, Garyostylus, Garyodoras^ 
Garyolonche^ Caryostaurus, Staurocaryum^ Hexacaryum^ Arachnopegma 
(p. 454), Spongoplegmay Plegmosphcera^ Stypiosphcera, Spongostylus, Spon- 
gostylium, Spongolonche^ Staurodoras, Hexadoras^ Hexadorium^ Hexado- 
ridium (p. 455), Rhizoplegma, Spongopila, Spongosphwrium, SpongechinuSy 
Spongodrymus (p. 456), 
Fam Discida: Sethodiscus, Fhacodiscus, Perizona, SethostyluSy Helio- 
stylus, Phacostylus, Triactis, Sethostaurus, H eliostaurus, Phacostaurus, 
Astrostiiurus, Heliosestrum, Heliocladus, Heliodry mus, Astrosestrumy 
Astrophacus {pAbl), Amphicyclkiy Tripocycliay Staurocyclia, GoccostauruSy 
Astrovyclia, Coccocyclia, Diplacturay Amphactura (p. 458), Trigohacturay 
ITymenactural Astrdctura, Stauractura, Pentactura, Ilexactura, Porodiscus, 
Perispira, Gentrospira, AtactodiscuSy Perispongidium (p. 459), Xiphodictya, 
Tripodictya, Staurodictya, Stylochlamydiuniy Stylo spongidium, Amphi- 
hrachium, Amphymeniumy Amphirhopalum, Amphicraspeduniy Ghitonas- 
truifiy Hagiaslrum, Tesserastrum, Dicrandstruniy Ceratastrumy Myelastrum, 
Tricranastrum (p. 460), Pentalastrum, P entinastrum, Hexalastrum, Hexi- 
nastrum, Spongophacus, Spongolonche, Spongotripusy Spongostaurus, Spongo- 
hrachium (p. 461). 
Fam. Zygartida : Artiscus, Artidium, Stylartus, Gannartus, Didymo- 
phormis (p. 462), Cyphinus, Panarium, Ommatartus, Zygartus (p. 463). 
Fam. Pylonida : Pylocapsa, AmphipylOy Amphipylonium (p. 463), 
Triopyle,j Tetrapy Ionium , 2'etraspongonium, Hexapyhy B exasp ohgoniumy 
Octopyle, Py Ionium (p. 464). 
Fam, Lithelida : Phorticium, Spongophortis, Soreuma, Soreumidiumy 
Spireuma, Drymospira (p. 464). 
Order III. AGANTHAPTA. 
Fam. Acantiionida : Acanthonia, Asti'olonche, Phractacantha, Dorata- 
canthay Staurdcantha, Phatnacantha (p. 465), StauropterUy Xiphoptera, 
Staurolonche, Staurohelone, Staurodoras, Staurolithium, Acantholonche, 
AmphilUhiumy Amphihelone (p. 466). 
Fam. Diploconida: (none new). 
Fam. Dorataspida : Phractaspis, Pleuraspis, Stauraspis, Echinaspis 
(p. 467), Thoracaspis,: Orophaspis, Acontaspis, Belonaspis, Ceriaspis, 
ColeapsiSy Tessaraspis, IcosaspiSy Phatnaspis, StegaspiSy Lychnaspis, 
Phractopelma, Stauropelma (p. 468), Dorypelma, Tessaropelma (p. 468). 
Fam. Sphalrocapsida : Sphoirocapsa (p. 469), 
Fam. Litholophida : Astrolophus (p. 469). 
Orderly. COLLODARIA. 
Fam. Thalassocollida : Thalassopila (p. 469), Thalassophysa 
(p. 470). 
Fam. THALASSOPHA2RIDA I TJialassoxanthium (p. 470). ' 
Order V. PHOEDARIA [PH^O-']. 
Fams. PHA 30 CYSTIDA, Phjeogromida, Ph^osph.<erida, and Pii^ocoN- 
CHIDA, [The names of various known and presumably new genera of 
