268 



ECHINODERMA 7 A. 



[PEN. PER- 



Fio. 385. P e n t r e m I tes 

 godoni. 



gemmiformis, Hambach, 1884, Trans. St. 



Louis Acad. Sci., vol. 4, p. 548, Kas- 

 kaskia Gr. 

 globo&us, Say, as identified by Troost, 1850, 



probably Pentremites sulcatus. 



godoni, DeFrance, 

 1818, Diet. Sci. 

 Nat, t. 14, p. 

 467. Kaskaskia 

 Gr. 



granulatus, see 

 Granatocrinus 

 granulatus. 

 grosvenori, S h u- 



mard, see Troostocrinus grosvenori. 

 hemippbericus, Hambach, 1880, Trans. 



St Louis Acad. Sci., vol. 4, p. 145, Kas- 

 kaskia Gr. 



kentuckiensis, see Codaster kentuckienpis. 

 koninckanus, Hall, 1858, Trans. Alb. Inst., 



vol. 4, p. 4, and Geo. Sur. Iowa, p. 656, 



Warsaw Gr. 

 laterniformis, Owen & Shumard, 1850, 



Jour. Acad. Nat. Sci, 2d series, vol. 2, p. 



66, Kaskaskia Gr. 

 leda, Hall, see Granatpcrinus leda. 

 lineatus, see Troostocrinus lineatus. 

 longicostalis, Hall, 1860, Supp. to Geo. 



Iowa, p. 85, Warsaw Gr. Not satisfac- 

 torily defined, 

 lycoria's, Hall, 1863, 16th Rep. N. Y. St. 



Mus. Nat. Hist,, p. 123, Ham. Gr. 

 maia, Hall, 1862, 15th Rep. N. Y. St. Mus. 



Nat. Hist., p. 122, Ham. Gr. 

 melo, see Grauatocrinus melo. 

 missouriensis, Swallow, 1863, Trans. St. 



Louis Acad. Sci., vol. 2, p. 81, Kas- 

 kaskia Gr. 

 nodosus, Hambach, 1880, Trans. St. 



Louis Acad. Sci., vol. 4, p. 145, Kas- 

 kaskia Gr. 



norwoodi, see Granatocrinus norwoodi. 

 obesus, Lyon, 1857, Geo. Sur. Ky., vol. 3, 



p. 469, Kaskaskia Gr. 

 obliquatus, see Triccelocrinus obliquatus. 

 ovalis, Owen. Notde- 



fined, 

 potteri . Ham bach, 



1880, Trans. St. 



Louis Acad. Sci., tf; 



vol. 4, p. 156, Bur- 

 lington Gr. 

 pyriformis, Say, 1825, 



Jour. Acad. Nat. 



Sci. Phil., vol. 4, p. 



294, Kaskaskia Gr. FIG. 386. Peutremites 

 reinwardti, Troost, pyriformis. Ventral 



see Troostocrinus ^ r te t e; d ' 



reinwardti. 

 robustus, Lyon, 1860, Trans. St. Louis 



Acad. Sci., vol. 1, p. 629, Kaskas- 



kia Gr. 



roemeri, see Granatocrinus roemeri. 

 sampsoni, Hambach, 1884, Trans. St. 



Louis Acad. Sci., vol. 4, p. 548, Choteau 



or Waverly Gr. 

 tayi, see Schizoblastus sayi. 

 sirius, White, 1862, Proc. Bost. Soc. 



Nat. Hist., vol. 9, p. 20, Burlington Gr. 



spinosus, Hambach, 1880, Trans. St. Louis 

 A<ad. Sci., vol. 4, p. 145, Kaskaskia Gr. 



stelliformis, see Orophocrinus stelliformis. 



subconoideus, Meek, 1873, Hayden's Geo. 

 Sur. Terr., p. 471, Subcarb. 



FIG. 387. Pentremites pyriformis. One shows 

 the deltoid plates extended to the summit. 



subcylindricus, see Troostocrinus subcylin- 



dricus. 

 subtruncatus, see Troostocrinus subtrun- 



catus. 

 sulcatus, Roemer, 1852, Monog. Blas- 



toid., p. 354, Kaskaskia Gr. 

 symmetricus, Hall, 1858, Geo. Rep. Iowa, 



p. 694, Kaskatkia Gr. 

 tennesseese, Troost. Not defined. 

 troosti, Shumard, 1866, Trans. St. Louis 



Acad. Sci., vol. 2, p. 386, Kaskaskia Gr. 

 truncatus, Conrad, 1843, Pror. Acad. Nat. 



Sci. Phil., vol. 1, p. 334, Wai saw Gr. 

 varsouviensis, see Triccelocrinus varsou- 



viensis. 



vtrneuili, see Nucleocrinus verneuili. 

 whitii, Hall, 1862, 15th Rep. N. Y. St. 



Mus. Nat. Hist, p. 122, Ham. Gr. 

 woodmani, see Triccelicrinus woodmani. 

 wartheni, see Tricoelicrinus wortheni. 

 PENTKEMITIDEA D'ORBIGNY, 1849, Prodr. d. 



Paleont, t. 1, p. 102. [Ety. from Pen- 



tremites.] Number and disposition of 



plates as in Pentremites, but the del- 



toids are inconspicuous, confined to 



the summit, rarely visible in a side 



view ; spiracles large. It is also closely 



connected with Troostocrinus, and as of 



doubtful generic value. Type P. 



schultzi. 

 americana, Barris, 



Geo. Sur. 111., vol. 



363, Ham. Gr. 

 filosa, Whiteaves, 



Cont. to Can. Pal., vol. 



1, p. 104, Ham. Gr. 

 PERISCHODOMUS, McCoy, 



1849, Ann. Nat. Hist, 



vol. 3, p. 251. [Ety. 



perischos, inclosing ; ao- 



mus, house.] Spheroidal, 



subpentagonal ; 



lacra narrow, two rows a m e r i c ana ; 



of small plates imbricat- 2diam. 



ing downward, each 



pierced by one pair of simple pores ; 



interambulacra wide, with five rows of 



1883, 

 7, p. 



1887 



ambu- Fl t r - ,** ^ d 



