90 



ECHINODERMATA. 



Eetioceinos, Billings, 1858, Can. Org. Rem. 



Decade 4. [Ety. retium, net ; krinon, 



a lily.] 

 fimbriatus, Billings, 1859, Can. Org. Rem. 



Decade 4, Hud. Riv. Gr, [Sig. fringed.] 

 stellaris, Billings, 1859, Can. Org. Rem. 



Decade 4, Trenton Gr. [Sig. rayed 



like a star.] 

 Rhodockinus, Miller, 1821, Xat. Hist. Crin- 



oidea. [Ety. rhodon, a rose ; krinon, a 



lily-] 



asperatus, Billings, 1859, Can. Org. Rem. 



Decade 4, Chazy Gr. [Sig. made 



rough, uneven.] 

 barrisi, Hall, 1861, Desc. New Crinoidea, 



Burlington Gr. [Ety. proper name.] 

 barrisi vnr. divergens. Hall, 1861, Desc. 



New Crinoidea, Burlington Gr. [Sig. 



divergent, separating.] 

 gracilis, Hall, 1862, 15th Reg. Kep. N. Y., 



Ham. Gr. [Sig. slender.] 

 halli, Lyon, 1861, Proc. Acad. Nat. Sci., 



Phil., Low. Held. Gr. [Etv. proper 



name.] 

 melissa, Hall, 1863, Trans. Alb. Inist., vol. 



4, Niagara Gr. [Ety. mythological 



name.] 

 microbasalis, see Thysanocrinus microba- 



salis. 

 nanus. Meek & Worthen, ]s66, Proc. 



Acad. Nat. Sci., Phil., Burlington Gr. 

 • [Sig. dwarfish.] 

 nodulosus. Hall, 1862, 15th Reg. Rep. N. 



Y., Ham. Gr. [Sig. covered with 



small knots.] 

 pynformis, see Thysanocrinus pvriformis. 

 rectus. Hall, 1867, 20th Reg. Rep., Niag- 

 ara Gr. [Sig. straight.] 

 spinosus. Hall, 1862, 15th Reg. Rep. N. 



Y., Ham. Gr. [Sig. covered with 



many spines.] 

 varsoviensis. Hall, 1860, Supp. Geo. Rep. 



Iowa, AVarsaw Gr. [Ety. proper 



name.] 

 wachsmuthi, Hall, 1861, Desc. New Crin- 

 oidea, Burlington Gr. [Sig: proper 



name.] 

 whitii, Hall, 1861, Desc. New Crinoidea, 



Burlington Gr: [Ety. proper name.] 

 whitii var. burlingtonensis, Hall, 1861, 



Desc. New Crinoidea, Burtington Gr. 



[Ety. proper name.] 

 wortheni, Hall, 1858, Geo. Rep. Iowa, 



Burlington Gr. [Ety. proper name.] 

 Saccocrinus, Hall, 1852, Pal. N. Y., vol. 2. 



[Ety. aakkos, a bag or sack ; krinon, a 



lily-;] 



christyi, Hall, 1863, (Actinocrinus ohris- 

 tyj) Trans. Alb. Inst., vol. 4, Niagara 

 Gr. This species was called by M^n- 

 chell & Marey, 1865, Megistocrinus 

 marcouanus, and again by Hall, in 

 1865, Saccocrinus whitfieldi. 



ornatus, Hall & Whitfield, 1875, Ohio Pal., 

 vol. 2, Niagara Gr. [Sig. adorned.] 



seniiradiatus, Hall, 1867, 20th Reg. Rep., 

 Niagara Gr. [Sig. half-rayed.] 



speciosus, Hall, 1852, Pal. N. Y., vol. 2, 

 Niagara Gr. [Sig. beautiful.] 



tennesseensis, Troost, jMs., Hall & "Whit- 

 field, 1875, Ohio Pal., vol. 2, Niagara 

 Gr. [Ety. proper name.] 



tt-iiitfieldi. Hall, 1867, (Actinocrinus chrLs- 

 tyi, 1863) 20th Reg. Rep., Niagara (ir. 

 This name must be regarded as a syn- 

 onym for Saccocrinus christyi as well 

 as Jlegistocrinus marcouanus, unless 

 the fossil should be referred to the 

 genus Actinocrinus, in which case, the 

 specific name chmtyi being preoccu- 

 pied, marcouanus would have the 

 preference. 

 ScAPHiocRiNus, Hall, 1858, Geo. Rep. Iowa. 

 [Ety. scaphirm, a skiff; krinon, a lily.] 



abnormis, Worthen, 1875, Geo. Sur. 111., 

 vol. 6, St. Louis Gr. [Sig. abnormal.] 



segina. Hall, 1863, Desc. New Crin. Wav- 

 erly sandstone, Waverly Gr. [Ety. 

 mythological name.] 



:cquahs. Hall, 1861, Desc. New Crin., 

 Keokuk Gr. [Sig. equal.] 



bayensis, jNIeek & Worthen, 1865, Proc. 

 Acad. Nat. Sci. Phil., Chester Gr. 

 [Ety. proper name.] 



carbonarius. 



Proc. Acad. 



-Aleek & Worthen, 18 61, 

 i. Nat. Sci. Phil., Up. Coal 



]Meas. [Sig. from the coal measures.] 

 carinatus. Hall, 1861, Desc. New Crin., 



Burlington Gr. [Sig. keeled.] 

 olio. Meek & Worthen, 1869, Proc. Acad. 



Nat. Sci. Phil., Burlington Gr. [Ety. 



mythological name.] 

 corey'i, Meek & AVorthen, 1869, Proc. 



Acad. Nal. Sci. Phil., Keokuk Gr. 



[Ety. proper name.] 

 dactyliformis. Hall, 1858, Geo. Rep. Iowa, 



St. Louis Gr. [Sig. finger-shaped.] 

 decabrachiatus. Hall, 1858, Geo. Rep. 



Iowa, KaskaskiaGr. [Sis. ten-armed.] 

 decadactylus, ileek & Worthen, 1860, 



(Poteriocrinus decadactylus) Proc. 



Acad. Nat. Sci. Phil., Keokuk Gr. 



[Ety. ten-fingered.] P. decadactvlus 



was preoccupied, 

 delicatus, Jleek & Worthen, 1869, Proc. 



Acad. Nat. Sci. Phil., Burhngton Gr. 



[Sig. delicate.] 

 depressus. Meek & Worthen, 1870, Proc. 



Acad. Nat. Sci. Phil., Keokuk Gr. 



[Sig. depressed.] 

 dichotomus, Hall, 1858, Geo. Rep. Iowa, 



Burlington Gr. [Sig. dividing into 



two.] 

 divaricatus. Hall, 1860, Supp. to Geol. 



Iowa. Burlington Gr. [Sig. wide 



apart.] 

 doris, Hall, 1861, Desc. New Crinoidea, 



Burlington Gr. [Ety. mvthological 



name.] 

 fiscellus, Meek & Worthen, 1869, Proc. 



Acad. Nat. Sci. Phil., Burlington Gr. 



[Sig. a small basket of woven slender 



twigs.] 

 halli. Hall, 1861, Desc. New Crinoidea, 



Burlington Gr. [Ety. proper name.] 



