ILchinodcniiata and a \'cw nraclnopod. — Ro^i^'lcy. 281 
Tlu' transverse lines of <;r()\vtli are strong- and ^ivc to the 
])lications where they cross, a nodose a])|)earanc(.'. The shell is 
indistinctly hilohcd. 
From llie Niagara limestone, six miles west of St. Marys, Mo. 'Jhe 
sliell is rare and the collection contains Inil three sps^rimens, two of 
which are figured. 
Found associated witli Pisocrinus granulosus and Stribalocy>tis 
missouricnsis. 
EXPLAXATIOX ( )!• I'LATl'. .\\ 1. 
PrsocRiNrs cK.wri.osrs, X. Si'. 
Figs. I and 2. Basal and anal side views of the type, two diameters. 
Fig. 3. An aberrant specimen, side view X 2. 
PiSOCRIM'S COkltVl? S. .\. MlI.I.KK. 
Fig. 4. Side view of., a large specimen, two diameters. 
Figs. 5, 6. 7. Basal, side and top views of another specimen X 2. 
PiSOCRI.VUS GLOCOSrS? Rl.\(U KltEKG. 
Fig. 8. Sioe view of a large specimen X 2. 
Fig. 9. Basal view of another specimen X -■ 
PiSOCRIM'S GI..\l?ELI.l'S, X. Si". 
Fig. 10. Side view of a very ' large specimen X 2. 
Fig. II. Top view of a smaller .specimen X 2. 
Fig. 12. Basal view of a small specimen X 2, showing large basals. 
Cv.\THOCRINa"S? OV.M.IS. X. Si'. 
Figs. 13, 14. 15. Basal, side nnd top views of three different speci- 
mens X 2. 
Fig. 16. Side view of a small individual, two diameters. 
LecAXOCKIMS IIEMISl'llERU is. X. Sp. 
Figs. 17, 19. Side and top views of two small specimens X 2. 
Fig. 18. Basal view of a large, example, two diameters. 
CoKDvuK Ki.xrs ? uriius, X. Sp. 
Figs. 20. 21, 22. Lateral, dorsal and vjutral views of th.e type X 2. 
Strib.\locvstis missotriensis Rowi.Ev. 
Fig. 23. Side view of the type, natural size. 
Fig. 24. Basal view of a small specimen X 2. 
Strib.\locvstis? eu)Ng.\tls Rowley. 
Fig. 25. Side view of the type spicimen. natural size. 
Fig. 26. Side view of another specimen, natural size. 
Melocrixis wittexbergensis. X. Sp. 
Fig. 2J. Side view of the type, natural size. 
TrOOSTOCRINTS? DlBll'S RoWLEV. 
Figs. 28. 29. Side views of two large sipicimens. natural size. 
