Bekde.| Carboniferous Invertebrate*. 33 



its " larger size, more robust form, and less convex plates." In 

 these respects, judging from the figures, our specimens agree 

 more closely with ('. craigi. 



Ceriocrinus? monticulatus. Plate VII, fig. 2. 



Ceriocrinus f monticulatus Beede, Kans. Univ. Quart., vm, p. 123, pi. 



xxxii, f. 2, (1899). 



Calyx basin-shaped, moderately deep, slightly concave at base ; 

 arms moderately stout, their number not known ; pinnules mod- 

 erately long. Infrabasals not known, but probably small and 

 nearly covered by the stem. Basals large, hexagonal, convex, 

 curved regularly inward at the base, about as high as wide, 

 upper lateral edges sometimes a little unequal on account of 

 the unequal radials, which makes some of the upper and lower 

 lateral edges unequal also. Radials a little unequal in size, 

 pentagonal, the upper edges beveled, about twice as wide as 

 high, upper surface faceted, the line of articulation with the 

 costal gaping. Costals five, pentagonal in outline, somewhat 

 produced exteriorly but not spinous, twice as wide as high, with 

 single facet below to meet the radial and two above for the ar- 

 ticulation with the distichals. Distichais 2x5, quadrangular 

 or pentagonal according to the number of arms supported, ap- 

 parently faceted above and below ; those supporting two arms 

 very similar in shape to the costals. There are often one or two 

 palmars before the postpalmars are reached, at the base of the 

 arms. Arms long, rather stout, somewhere from fourteen to 

 eighteen in number, ten in view above three radials ; they are 

 made up of two series of short, stout, interlocking, cuneiform 

 plates, each bearing a single, long pinnule. Pinnules com- 

 posed of at least eight long, slender joints, slightly grooved on 

 the inner side ; along each side of the groove is a row of closely 

 set nodes, or little plates. The entire surface of the cup and 

 arms is covered with monticules and fine granulations. 



Height. Width. 



liasals It) mm. 10 mm. 



Radials 6 " 11 " 



Costals .") '• 10 " 



Distiohals 5 " 7 " 



Arms 53 " 3to4 " 



Pinnules 11 " \ " 



Calyx 12 " 24 " 



