22 



tapel'S to a point at some distance within the blunt apex ; 

 it is convex at its broadest end, and becomes flattened 

 and slightly elevated above the pleuraB ; the dorsal fur- 

 rows are well defined. Axis with about 24 narrow rings, 

 only the first 4 or 5 are entire, the others are notched at 

 the sides, leaving the centre free, which has several very 

 email granules. The 7 pleurse are narrow at their base, 

 and become wider at their extremities ; they curve 

 downwards and backwards, the last 2 or 3 pleurae being 

 almost parallel with a line drawn through the length 

 of the axis. The surface is minutely granular. The 

 length of the largest specimen is 9 lines, with a width 

 of lOi lines. 



Locality : Cape Girardeau Limestone, 2 miles above 

 Cape Girardeau, Missouri. 



The only difference between this species and Baiter's 

 Encrinurus sexcostatus is the addition of one pleurae, 

 giving Shumard's species a more pointed form. 



Cryptonymus l^vis. Angelin, 1862. 



Pal^ontoloqia Scandinavica, Pl. IV, Fig. 10. 

 Plate II, Fig. 10. 



" Cryptonymus fronte subintegra, abdomine laevissimo, 

 triangulari, acuminato, costis utrinque 8. 



Regionis E, Gottlandiae, ex gr. ad Hugklint prop 



Wisby." 



Cryptonymus oBtusus. Angelin, 1852. 

 PaljEontologia Scandinavica, Pl. iv. Fig. 9. 

 "Crypt, abdomine obtuso : rachi obsoletius granulata : 

 lateribus Isevissimis, costis utrinque 10. 



Regionis E, Gottlandiae, ad Katthammarsvik," 



