85 



On the slab, which is chert, containing our specimen there are 

 the casts of what we suppose to be part of the pseudo ambulacral 

 appendages or ovarian extensions, but they are not connected with 

 the calyx, and for that reason are not illustrated. If they rep- 

 resent these appendages, they are much larger than any belonging 

 to any of the described species of Goniasteroidocrinus'. 



Found in Subcarboniferus rocks, probably of the age of the 

 Keokuk Group, near Jopliu, Missouri, and now in the collection 

 of Charles L. Faber. 



Family CYATHOCBINIML 



CYATHOCRINUS FABERI, n. sp. 



Plate V, Fig. 12, basal view; Fig. 13, azygous side; Fig. 14, 

 opposite view; Fig. 15, radial plate magnified two diameters. 



Specimens medium size. Calyx about twice as wide as high, 

 somewhat obconoidal, most expanded on the azygous side. Su- 

 tures distinct. Surface pustulous, the pustules sometimes uniting 

 so as to form lines. Column round, medium size. 



Basals small and form a low cup, with a shallow, concave de- 

 pression for the attachment of the column. Subradials nearly as 

 long as wide, the one on the azygous side being the largest. First 

 radials of unequal size and from one-half wider than long to more 

 than twice as wide as long, and truncated the entire width above 

 for the second radials. The facets are inclined, indicating a gaping 

 suture, and they are only slightly notched for the ambulacral 

 canals. The azygous plate truncates a subradial and extends one- 

 third of its length above the first radials. 



This species is distinguished by its form and pustulous surface 

 from all other illustrated species. There have been several spe- 

 cies, iu this genus, described without illustrations, and we have 

 c »m pared this species with the definitions, some of which are 

 very unsatisfactory, but none of them seem to be like this one. 



Found in the Burlington Group, at Burlington, Iowa, and now 

 in the collection of Charles L. Faber, in whose honor we have 

 proposed the specific name. 



