164 



PROTOZOA. 



[kiia. —i-ii. 



infundibulum, Hall, 1861, Geo. Rep. Wis. 



p. 16, Niagara Gr. 

 insularis, Billings, 1866, Catal. Sil. Foss 



Antic, p. 29, Anticosti Gr. 

 iowensis, Owen, 1852, (Selenoides iowen 



sis,) Geo. Sur. Wis., Iowa, and Minn. 



p. 587, Trenton Gr. 

 jonesi, Billings, 1865, Pal. Foss., vol. 1, p 



389, Low. Held. Gr. 



Fig. 119.— Receptacalltes 

 occldentalls, showing the tubes. 



mammillaris, Walcott, 1885, Monog. U. 8. 



Geo. Sur., vol. 8, p. 65, Chazy Gr. 

 monticulatus, Hall, 1883, Rep. St. Geol., 

 pi. 23, fig. 3-11, Low. Held. Gr. 



tieptunei, DeFrance, 

 1827, Diet. des. Sci. 

 Nat., vol. 45, p. 5. 

 Not an American 

 species, 

 occidentalis, Salter, 

 1859, Can. Org. 

 Rem., Decade 1, p. 

 45, Trenton Gr. 

 ohioensis, Hall & 

 Whitfield, 1875, 

 Ohio Pal., vol.2, p. 

 123, Niagara Gr. 

 oweni, Hall, 1861, 

 Geo. Rep. Wis., p. 

 13, and Geo. Sur. 

 III., vol. 3, p. MS, 

 Galena <lr. 

 reticularis, Owen, 

 1844, (Orbituloides reticulata,) Rep. on 

 Minn. Lands, p. 70, Niagara <Jr. 



Fiq. 120. — Receptacu- 

 lltes occldentalls, 

 showing the endor- 

 liin, the pores at the 

 angles or the plates, 

 and deeply concave 

 nucleus. 



Fig. 121.— Receptaculites occidentalis, showing 

 the nucleus and ectorhin. 



sacculus, Hall, 1879, Desc. New Species 

 Foss. from Waldron, Ind., p. 1, and 11th 

 Rep. Geo., and Nat. Hist. Ind., p. 222, 

 Niagara Gr. 



squamifer, Hall, 1859, (Dictyocrinus 

 squamifer,) Pal. N. Y., vol. 3, p. 135, 

 Low. Held. Gr. 



subturbinatus, Hall, 1863, Trans. Alb. 

 Inst., vol. 4, p. 224, Niagara Gr. 



sulcatus, Owen, 1844. This name was pre- 

 occupied by Goldfuss, and the species 

 is now named R. oweni. 



tessellatus, Winchell & Marcy, 1865, Mem. 

 Bost. Soc. Nat. Hist., vol. 1, p. 85, 

 Niagara Gr. 

 Rhabdabia, Billings, Pal. Foss., vol. 1, p. 

 357. [Etv. rhabdos, rod.] Small, cylin- 

 drical bodies, with a rough surface ami 

 a perforation in the center. Type K. 

 fragilis. 



fragilis, Billings, 1865, Pal. Foss., vol. 1, 

 p. 357, Calciferous < \r. 



furcata, Billings, 1865, Pal. Foss., vol. 1, 

 p. 868, Calciferous Gr. 

 Rhombodictyon, Whitfield, 1886, Bull. Am. 

 Mus. Nat. Hist., vol. 1, p. 347. [ Kty. 

 rhombos, rhomb ; diclyon, net.] Globu- 

 lar, discoid, or cyathiform, composed of 

 two or more sets of rods crossing each 

 other at various angles, but not divid- 

 ing, and leaving rhombic spaces tilled 

 with another substance. Type R. reni- 

 forme. 



discum, Whitfield, 1886, Hull. Am. Mus. 

 Nat. Hist., vol. 1, p. 348, fJtice Slate. 



reniformc, Whitfield, 1886, Hull. Am. Nat. 

 Hist., vol. 1, p. 347, Utica Shite. 



reniforme var. rhombiforme. Whitfield, 

 1886, Hull. Am. Mus. Nat. Hist., vol. 1, 

 p. 348, Utica Slate. 

 Rotalia, Lamarck, 1804, Ann. Mus. | Kty. 

 rota, wheel.] Not Palaeozoic. 



baiUyi, see Endnthyra hailevi. 

 Saccammina, Sars, 1868, Yidensk-Selak. 

 Forhandl., p. 248. [Kty. diminutive of 

 sakkos, a bag.] Not American l'ala- 

 ozoic. 



eriana, Dawson, 1881, Can. Nat., vol. 10, 

 syn. for Calcisphsera robusta. 

 Saccospongia, llrich, 1879, Am. Geo., vol. 

 34, p. 242. [Ety. sahkos, bag; spongia, 

 sponge.] Subcylindrical, with a central 

 cloacal cavity extending through it; 

 walls porous, traversed with tortuous 

 branching canals intercommunicating 

 with each other. Type S. rndic. 



danvillensis, Ulrich, 1889, Am. Geol., vol. 

 3, p. 243, Trenton Gr. 



rudis, Ulrich, 1889, Am. Geol., vol. .'?. p. 

 242, Trenton Gr. 

 Sq/phia, Oken, 1815. Not American Palae- 

 ozoic. 



digitata, see Brachiospongia digitata. 



stellaia, Troost, 1840, not properly defined. 

 Selenoides, Owen, 1852, syn. for Recepta- 

 culites. 



wwensit, see Receptaculites iowensis. 

 Siphonia, Parkinson, 1820, Organ. Rem. 

 Not American Palaeozoic. 



cratera, see Palseomanon cratera. 



imbricato-articulata, see Astylospongia im- 

 bricato-articulata. 



prsemorsa, see Astylospongia prsemorsa. 

 Sphenopterium, Meek & Worthen, 1860, syn. 

 for Palaeacis. 



compression, see Palseacis compressus. 



euneatum, see Palaeacis cuueiformis. 



enorme, see Palseacis enormis. 



enorme var. deprmum, see Palseacis enor- 

 mis var. depressus. 



obtu8um, see Palaeacis obtusus. 



