AI^IMAL KINGDOM. 



SUB-KINGDOM PROTISTA. 



CLASS RHIZOPODA.— [Ety. rhha, a root ; pode», feet.J 

 t'LAsS PORIFERA.— [Ety. poms, a pore; ,/V/o, to ))ear.] 



CLASS RHIZOPODA. — Dentalina, Eozoon, Fusulina, Nullipora, Receptaculites, Rotalia. 



CLASS PORIFERA. — Archeocyathus, Astra'cispoiigia, Astylosponfria, Aulocopina, Brachi- 

 ospongia, Calathiuiii,Cneiiiidiuiii,Conopterium, Eospongia, Palfpacis, Pala;omanon, 

 Rhabdaria, Trachyum, Tiichospoiigia. 



INCERTjE SEDIS. — Pasceoius, Ribeiria. The latter genus is placed by Woodward in 

 the class Lamellibranchiata. Salter referred it to the Crustacea. It is very doubt- 

 ful whether it is American. 



Archeocyathus, Billings, 1861, Pal. Fobs., 

 vol. 1, Potsdam Gr. [Ety. urclip, ])e- 

 ginning ; rijoHmx, a cup.] 



atlanticus, Billings, 1861, Pal. Foss., vol. 

 1, Potsdam Gr. [Ety. mythological 

 name.] 



minganensis, Billings, 18.>!i, (Petraiamin- 

 ganenais) Can. Nat. & (ieol., vol. 4, 

 Calcif. (jr. [Ety. proper name.] 



profundus, Billings, lS(il, Pal. Foss., vol. 

 1, Potsdam Gr. [Sig. ileep.] 



rensselffiricus, Ford, 1S73, Am. Jour. Sci. 

 & Arts, 3rd ser., vol. -j, Low. Potsdam 

 Gr. [Ety. proper name.] 

 AsTR^osPONGi.'v, Roemer, 1860, Sil. Fauna, 

 des West Tenn. [Ety. iislnta, from 

 aster, a star; xpongin, sponge.] 



hamiltonensis. Meek & Worthen, 1866, 

 Proc. Chi. Acad. Sci., vol. 1, Ham. Gr. 

 [Ety. proper name.] 



meniscus, Roemer, 1848, (Blumenbach- 

 ium niiniscus) Leonh. A Bronn's 

 Jahrb., Niagara Gr. [Ety. iiieniskos, 

 a little moon.] 

 AsTYLosPONGiA, Roemer, I860, Sil. Fauna. 

 des West Tenn. [Ety. n.5/,i/?o.v, without 

 a pillar or prop; spouyia, sponge.] 



Christiana, Meek & Worthen, 1868, ("ieo. 

 Sur. 111., vol. 3, Niagara Gr. [Ety. 

 proper name.] 



imbricato-articulata, Roemer, 1848, (Si- 

 phonia imbricato-articulata) Leonh. & 

 Bronn's Jahrb., Niagara Gr. [Ety. 

 imbricatm, imbricated ; articulatm, ar- 

 ticulated.] 



inciso-lobata, Roemer, 1848, (Spongia 



inciso-lobata) Leonh. & Bronn's 



Jahrb., fp. Sil. [Sig. cut into lobes.] 

 Inirsa, Hall, 1876, 28th Reg. Rep., Niagara 



(ir. [Sig. a purse.] 

 parvula, Billings, 1861, Pal. Fos.s., vol. 1, 



Trenton Gr. [Sig. small.] 

 perryi, Billings, 1861, Geol. Vermont, 



Black Riv. (Jr. [Ety. proper name.] 

 prtemorsa, Cioldfuss, 1826, (Siphonia praj- 



morsa) Petref. Germ., Niagara Gr. 



[Sig. jagged a.s if bitten off.] 

 stellatim-sulcatti, Roemer, 1848, (Spongia 



stellatim-sulcata) Leonh. & Bronn's 



.lahrb.. Up. Sil. [Sig. star-furrowed; 



in allusion to the star-like depressions 



on the outer surface.] 

 AuLOcoi'iXA, Billings, 1875, Can. Nat. & Geol. 



[Ety. ai(l(jlr>i>i'ii, cut into pipes.] 

 granti, Billings, 1S75, Can. Nat. & Geol., 



Niagara Gr. [Ety. proper name.] 

 Bhimnihadiiiuii, Konig, 1820, Icones, fossiles, 



scctiles, 

 ineniKctts, see Astrseospongia meniscus. 

 Brachiospongia, Marsh, 1867, Am. Jour. 



Sci. & Arts, 2nd series, vol. 44. [Ety. 



brachiuni, an arm; xpongia, sponge.]" 

 digitata, Owen, 1857, ^Scvphia digitata) 



Geo. of Ky., vol. 2, Cln'ti Gr. [Sig. 



having finger.s or toes.] 

 roemerana. Marsh, 1867, Am. Jour. Sci. 



and Arts, 2nd series, vol. 44, Cin'ti Gr. 



[Ety. proper name.] 

 lyoni. Marsh, 1867, Am. Jour. Sci. & Arts, 



2nd series, vol. 44, Cin'ti Gr. [Ety. 



proper name.] 



