68 SMITHSONIAN INSTITUTION 



PLATE XXXI 



(All figures natural size except where otherwise stated) 



^ ^ PAGE 



Figs. i-io. Forbesiocrinus saffordi Hall 259 



(Also on Plates XXI and XXX) 



Fig. la. The type, presented to the author by Prof. J. M. Safiford; right anterior view. It is a 

 very mature specimen, showing the lobed calyx, arching of rays, and depression of 

 anal and interbrachial areas; also the prominent gibbosity of the axillary IIBr fol- 

 lowed by flat plates. White's Creek, Tennessee. 



lb. Basal view of same, anal side to the left; posterior B truncate, followed by one plate. 



ic. IIIBr from same, showing pustulose surface. X 2. 



20. Young specimen from Spergen Hill, Indiana, posterior view. Shows plates of anal side 

 perfectly. 



2b. Basal view of same. IBB in place, with central part of thin columnal adhering. Note the 

 large size of the interbrachial plates. 



30. Detached base from same locality, with IBB and proximal columnal attached, dorsal view. 



3b. Interior view of same ; showing the crenulations and small fossae upon the sutural margin 

 of radials ; small infrabasal located anteriorly. 



3c. Lateral view of same, showing distal unpaired articulating face of radial, and sutural 

 margins for attachment of iBr. 



40. Proximal part of detached column, with IBB fused to top columnal; lateral view. Spergen 

 Hill, Indiana. 



46. Ventral view of same, showing the tri-lobate funnel or raised rim of axial canal as it 

 opens through the infrabasals. 



S. Fragment of a ray, showing the prominent axillary IIBr, same locality. 



6a. Another fragment from same locality, being part of a ray from IBr up, exterior view. 

 The plates are marked for comparison with the next figures — the brachials with 

 figures, the interbrachials with letters. 



6b. Interior view of same, with plates similarly marked. It shows by comparison with 60 

 how the brachials diminish in size inward, and the interbrachials are wedged in from 

 the inside to fill up the spaces. 



6c. Right lateral view of same, showing corrugated margin of the brachials for attachment 

 of interbrachials. 



6d. Lateral margin of IIBr i and 2 of same. X 2. 



ya-e. Another fragment from same locality, consisting of IBrs and following plates: 70, 

 exterior; 76, interior; yc, distal face of Br and iBr; yd, left lateral margin for attach- 

 ment of iBr ; ye, proximal face of IBra, showing paired ligament fossae. X 2. 



8. Proximal part of stem, showing extreme thinness of the coluranals, and the crenulate 



profile of the radiating striae on their apposed faces. X 2 (enlargement fraction 

 omitted on plate). 



9. Similar specimen, a little farther down. X 2. 



100. Calyx of another specimen from same locality, showing a somewhat different style of 



marking on the articulating and sutural margins. X 2. 

 106. Another view to show distal face of IBr,, with rather irregularly paired ligament fossae. 



X2. 



Warsaw limestone. Lower Carboniferous at Spergen Hill, Indiana; and highest 

 Keokuk, White's Creek, Tennessee. 

 All specimens figured are in the author's collection. 



