126 SMITHSONIAN INSTITUTION 



PLATE LX 

 (All figures natural size except where otherwise stated) 



PAGE 



Figs. i-ii. Taxocrinus whitfieldi (Hall) 408 



Fig. I. Basal view of type ; showing the large iBr and small anal tube ; 2 IIBr all around. 

 University of Illinois. Chester, Illinois. 



2. A very mature, rotund crown, basal view ; drawn with anal side to the right. Anal tube, 

 and weak perisome in posterior interradius in contrast with the solid iBr to the height 

 of IIBr in other areas ; some iBr touch BB. Pulaski County, Kentucky. 



3a. Right anterior interradial view of a similar specimen from same locality. 



$b. Basal view of same; iBr do not connect with BB ; 2 IIBr all around. 



3c. Distal view of same, showing the short, infolding arms. 



3(f. Outline of posterior radius, showing the division series, or intervals between axillaries. 

 ■ R + 2 IBr occurs in this ray only; 2 IIBr only in inner rami. 



4. Posterior view of similar specimen from same locality; showing anal area with tube 



bordered by perisome, but no solid plates ; and the limit of iBr. 



5. Large specimen with stem, anterior view; showing distal margin of iBr with perisome fol- 



lowing ; 2 IIIBr to inner rami. Same localitj'. 

 6 (erroneously printed 6d). A laterally flattened specimen, showing structure and proportions 

 of stem. Has 2 IIBr; 2 IIIBr on inner rami; and exceptionally but 2 IBr (only S out 

 of 34 specimens have 2 IBr). Same locality. 



7. A flattened specimen with normal IBr, r. post. view. Grayson Springs, Kentucky. 



8. Basal view of smaller specimen, showing same structure as fig. 3 ; iBr connects with BB 



in one area. Pulaski County, Kentucky. 



ga. Young specimen, flattened ; has 2 IBr ; some iBr touch BB. Same locality. 



gb. Right posterior view of same. 



lOa. Very young individual in the stage of Wetherby's " Forbesiocrinus" parvus; posterior 



view. Same locality. 

 10&. Right posterior view of same, enlarged. X 2. 



II. Type of Hall's "Forbesiocrinus" cestriensis, laterally compressed. University of Illinois. 



Chester, Illinois. 

 Upper part of Kaskaskia Gr. ; Lower Carboniferous. Illinois and Kentucky. 



Fig. 12. Amphicrinus carbonarius n, sp 341 



Fig. 120. A crushed specimen, with calyx plates displaced so that their arrangement cannot be 

 definitely ascertained. It is the latest known occurrence of the Flexibilia in America, 

 and the general facies of the specimen points clearly to an affinity with the form 

 from an approximately equivalent horizon in Scotland, illustrated on Plate XL, 

 figs. 9-11. 

 12&. Distal part of arms of the same. 



Pennsylvanian (Lower Coal Measures). Girard, Kansas. 

 All specimens in the author's collection unless otherwise stated. 



