86 SMITHSONIAN INSTITUTION 



PLATE XL 

 (All figures natural size except where otherwise stated) 



PAGE 



Figs. 1-3. Euryocrinus barrisi n, sp 316 



Fig. in. Calyx with two rays preserved to the axillary, showing 2 and 3 IBr, and a single small iBr, 

 right anterior view ; specimen water-worn and angles somewhat rounded. Author's 

 collection. Alpena, Michigan. 



lb. Anterior view of same. "?* 



ic. Posterior view of same, showing anal plates. 



id. Basal view, with IBB entirely within column facet. 



le. Cross sectional diagram of base, showing relation of the plates ; IBB within ring of BB, 

 entirely covered by the column. X 2- 



2a. Calyx of smaller specimen, with 3 IBr all around, right anterior view. The sharp, angular 

 back of the rays well preserved. Same locality and collection. 



2b, c. Left posterior and basal views of same. 



3. A more mature specimen somewhat flattened, with arms and stem, right anterior view ; 

 shows an increase of iBr due to greater age. Author's collection. 



New Bufifalo, Iowa. 

 Hamilton Gr. ; Middle Devonian. Iowa and Michigan. 



Figs. 4, 5. Euryocrinus concavus Phillips 317 



Fig. Aa. The principal type specimen, original of Phillips, pi. 4, fig. 15 ; being a crown minus arms. 

 Basal view, showing anal series, and the very narrow iBr; IBB almost entirely 

 resorbed. Two of the BB are concealed by a fragment of upper stem ossicle, giving 

 an appearance of only 4 BB. British Museum, No. E6984. 

 4&. Interior view of same specimen, showing remnants of IBB at left side, which are con- 

 cealed by the columnal in the exterior view. 

 S. Cotype ; original of Phillips, fig. 14, a specimen with rays broken off at IIBrs. Basal view, 

 showing the narrow iBr, and space for a wider anal series of plates, which are lost. 



British Museum, No. £6083. 

 Lower Carboniferous. Yorkshire, England. 



Figs. 6a-c. Euryocrinus tennesseensis n. sp ,. . . . 318 



Fig. 6a. The type ; a much flattened crown, right anterior view. Author's collection. 

 6&. Left posterior view of same. 

 6c. Basal view, showing BB almost covered by column. 



New Providence shales ; Lower Carboniferous. White's Creek, Tennessee. 



Figs, ya, h. Euryocrinus rofei Bather and Gregory (MS.) 319 



Fig. ya. Posterior view of type; a specimen with rays preserved only to first axillary. British 

 Museum, No. E7423. 

 yb. Basal view of same, showing the large BB, and iBr plates, with IBB partly resorbed. 

 Lower Carboniferous. Clitheroe, England. 



Fig. 8. ( ?) Euryocrinus granulosus (Phillips) . 319 



Fig. 8. Basal view of the type and only known specimen; a fragment with only the base and radial 

 plates preserved ; IBB not resorbed. British Museum, No. E6g82. 

 Lower Carboniferous. Yorkshire, England. 



