PIS. — SCA.] 



ECHINODERMA TA. 



681 



Fig. 1242 

 benedicti. Side 

 basal views. 



Fig. 1243. — Pisocrinus 

 gorbyi. Summit and 

 side view sbowing arm- 

 blades. 



are described on p. 159, and P. clavatus 

 and P. hemisphericus, on p. 157 ; P. 

 gemmiformis, p. 553 ; P. nodosus, p. 155 ; 

 P. sampsoni, p. 551 ; and P. spinosus, 

 p. 154, of vol. 4, Trans. St. Louis Acad. 

 ( Sci. P. cherokeus was not defined by 

 Troost, and as Roemer described P. sul- 

 catus in 1852, it was too late for Hall to 

 call the same species P. cherokeus in 

 the Geo. Sur. Iowa, in 1858. 

 laterniformis, see Troostocrinus laterni- 

 formis. 

 Pisocrinus benedicti, P. campana, P. gorbyi, 

 S. A. Miller, 1891, Advance Sheets 17th 

 Rep. Geo. Sur. Ind., 

 pp. 28 to 32, Ni- 

 agara Gr. P. gem- 

 miformis is rede- 

 fined at the same 

 Pisocrinus p i ace an( j t l ie ge _ 



Wide oml * . .. K 



nenc characters dis- 

 cussed. 



pyriformis was described in 1884. . 

 Platycrinus absentivus, P. aequiternus, 

 P. allophyllus, 

 P. annosus, P. 

 brittsi, P. ollic- 

 ula, from the 

 Chouteau lime- 

 stone ; P. ac- 

 clivus, P. bati- 

 ola, P. blairi, 

 P. broadheadi, 

 P. carchesium, 

 P. concinnus, P. gorbyi, P. lautus, P. oc- 

 cideritalis, P. pulcellus, P. rotundus, 

 P. sampsoni, P. sulcatus, from the Bur- 

 lington Gr. ; and P. asternalis, P. amab- 

 ilis, P. boonvillensis, P. pentagonus, 

 from the Keokuk Gr., Bull. No. 4, Geo. 

 Sur. Mo., pp. 8 to 23, S. A. Miller, 

 1890. 



alabamensis, S. A. Miller, 1891, Advance 

 Sheets 17th Rep. Geo. Sur. Ind., p. 50, 

 Kaskaskia Gr. 



altidorsatus, P. corbuliformis, P. mar- 

 ginatus, P. pisum, P. planobasalis, 

 from the Burlington Gr. ; P. curry- 

 villensis, P. insolens, from the Chou- 

 teau limestone ; Rowley & Hare, 

 1891, Kansas City Scientist, pp. 97, 

 98, 113. 



caducus, S. A. Miller, 1892, Advance 

 Sheets 18th Rep. Geo. Sur. Ind., p. 13, 

 Keokuk Gr., and at same place P. chou- 

 teauensis and P. colletti from the Chou- 

 teau limestone. 

 Poteriocrinus agnatus, P. amcenns, P. 

 boon villensis, P. coryphaeus, S. A. 

 Miller, 1891, Advance Sheets 17th Rep. 

 Geo. Sur. Ind., pp. 42 to 45, Keokuk 

 Group. 



arcanus, P. cantonensis, P. crawfordsvill- 

 ensis, P. granilineus, P. subramosus, 

 P. verus, from the Keokuk Gr. ; P. ge- 

 nista, P. legrandensis, P. scopse, P. 

 spartarius, from the Kinderhook G*\ ; 

 Miller and Gurlev, 1890, Jour. Cin. Soc. 

 Nat. Hist., vol. 13, pp. 23, 24, and Desc. 



New Gen. and Spec. Echinodermata, 

 pp. 29, 37 to 40, 49, republished, 16th 

 Rep. Geo. Sur. Ind., pp. 343, 344, 348, 355 

 to 358, 365. 



brittsi, S. A. Miller, 1890, Bull. No. 4, Geo. 

 Sur. Mo., p. 30, Keokuk Gr. 



meekanus refer to Cyathocrinus meeka- 

 nus, Chouteau limestone. 



waltersi, Rowley and Hare, 1891, Kan- 

 sas City Scientist, p. 101, Burlington 

 Gr. 

 Protaster gregarius, see Aganaster gregarius. 

 Rhodocrinus benedicti, S. A. Miller, 1892, 

 Advance Sheets 18th Rep. Geo. Sur. 

 Ind., p. 15, Keokuk Gr. 



caelatus, R. sculptus, Miller and Gurley/ 

 1890, Desc. New. Gen. and Spec. Echi- 

 nodermata, pp. 42, 43, and 16th Rep. 



Fig. 1244.— Saccocrinus howardi. Side, azygous, 

 and summit views. 



Geo. Sur. Ind., pp. 359, 360, Kinder- 

 hook Gr. 

 nanus is from the Kinderhook Gr. 

 parvus, S. A. Miller, 1891, Bull. No. 4, 



Geo. Sur. Mo., p. 39, Keokuk Gr. 

 Saccocrinus benedicti and S. howardi, 



S. A. Miller, 1892, Advance Sheets 



18th Rep. Geo. Sur. Ind., pp. 29 and 30, 



Niagara Gr. 

 gorbyi, S. A. Miller, 1891, Advance Sheets 



17th Rep. Geo. Sur. Ind., p. 57, Ni- 

 agara Gr. 

 Scaphiockinus bellus, S. bonoensis, S. dis- 



parilis, S. granuliferus, S. graphicus, S. 



lacunosus, S. manus, 



S. pnemorsus, S. re- 



pertus, Miller & < 



Gurley, 1890, Jour. 



Cio. Soc. Nat. Hist., 



vol. 13, p. 24, and 



Desc. New Gen. and 



Spec. Ech inoder- 



mata, pp. 29, 45 to 



52, republished in 



16th Rep. Geo. Sur. 



Ind., pp. 345, 349, 362 



to 367, Keokuk Gr. 

 boonvillensis, P. con- 



strictus, S. A. Miller, 



1891, Bull. No. 4, Geo. 



Sur. Mo., pp. 37, 38, 



Keokuk Gr. 

 gorbyi, S. porrectus, S. 



sampsoni, S. A. Mil- 

 ler, 1891, Advance Fig. 1245.-Scaphi- 



Sheets 17th Rep. ocrinus s orb y L 



Geo. Sur. Ind., pp. 42, 46; S. sampsoni 



from the Chouteau limestone, the others 



from the Keokuk Gr. 



