64 SMITHSONIAN INSTITUTION 



PLATE XXIX 

 (All figures on this plate natural size) 



PAGE 



Figs. 1-3. Forbesiocrinus washingtonensis Miller and Gurley 256 



Fig. la. One of the types, slightly compressed. Anterior view, showing the flat, closely abutting 

 arms ; the high level to which the interbrachials extend ; and the general convexity of 

 the plates. University of Chicago. 

 lb. Postero-basal view of same; the IBB have been pulled away with the column. 

 2. Posterior view of cotype. University of Chicago. 



30, b. Right anterior and posterior views of another somewhat flattened specimen, showing the 

 characteristic proportions of arms, and the limit of calyx to upper level of inter- 

 brachials. Author's collection. 



Keokuk Gr. ; Lower Carboniferous. Washington County, Indiana. 



Figs. 4, 5. Forbesiocrinus multibrachiatus Lyon and Casseday 255 



(Also on PI. XXVIII) 



Fig. 4. A small specimen from same locality as last ; right posterior view. ' Author's collection. 

 5. The type of Miller and Gurley's F. speciosiis, from the same locality and horizon. Drawn 

 after further cleaning, so as to show posterior basal and anal plates, not visible in the 

 original figure. University of Chicago, No. 6267. 

 Keokuk Gr. ; Lower Carboniferous. Washington County, Indiana. 



Figs. 6, 7. Forbesiocrinus pyriformis Miller and Gurley 257 



Fig. 6a. The type, from Muldraugh Hill, Kentucky. Anterior view, showing the pyriform crown 

 and strongly rounded arms. University of Chicago. 

 6b. Posterior view of same, showing anal plates. 



ya. Anterior view of a very large specimen from White's Creek, Tennessee, slightly com- 

 pressed dorso-ventrally. Shows the deeply rounded arms, and marked convexity of 

 the plates generally. Author's collection. 

 yb. Left posterior basal view of same, showing anal plates at the right. 

 Keokuk Gr. ; Lower Carboniferous. 



