508 PALEONTOLOGY OF ILLINOIS. 



The specific name of this form is given in honor of Mr. H. T. WOOD- 

 MAN, of Dubuque, Iowa, to whom AVC are indebted for the use of the 

 only specimen we have seen. 



Locality and position Salem, Indiana; Lower Carboniferous, Keokuk 

 group ? 



GENUS G 



GrRANATOCRINUS GRANULOSUS, M. and "W. 



PI. 15, Fig. 10. 



Pentremites (Qranatocrimts) granulosus, MEEK and WORTHBN. Proceed. Acad Nat. Sci., Phila., 1865, 

 p. 165. 



BODY small, siibglobose, base deeply concave, particu- 

 larly in the middle, and not visible in a side view. Radial 

 plates a little longer than Avide, about two-thirds as long as 

 the entire body, and tapering from above to the base, each 

 divided by the narrow, pseudo-ambulacral areas, down 

 almost to the very base; lateral margins moderately prom- 

 inent. Interradial pieces subtrigonal, or with a fourth 

 obscure angle in the middle below; longer than wide, and 

 each narrowing from below to the summit, where they are 

 perforated by two minute openings. Anal piece of the 

 same size and form as the interradial, with its opening cir- 

 cular, and comparatively large, its outer margin being pro- 

 tected by a small, rather pointed node. Pseudo-ambulacral 

 areas narrow, or sublinear, rather impressed, and each with 

 a distinct longitudinal, linear, mesial furrow; pore pieces 

 from twenty*five to thirty. Surface marked by compara- 

 tively distinct granules, most strongly defined on the in- 

 terradial and anal pieces, where they sometimes show a 

 tendency to arrange themselves in transverse lines parallel 

 to the lower margin. 



Hight of body, 0.22 inch; breadth of do., 0.23 incli; 

 breadth of pseudo-ambulacral areas, 0.05 inch. 



Not having at hand a specimen or figure of the type of TROOST'S Gran- 

 atocrinus, we are not quite sure this form belongs to that group, though 



