THE CRINOIDEA 



185 



arms, short in proportion to cup, borne on a sharply denned radial facet, 

 and forking on IBr 2 (further branching unknown) ; they are loosely 



Fio. CHI. 



Uintacrimis stx-ialis, Upper Cretaceous of America, f; nat. size. 1, from the side. 2, from 

 below, c, centrale; Jl, basal s ; 11, radials; 77*/-j, first primibrach ; A.r, primaxil ; 1, 2, 3, etc., 

 seciuulibrachs, bearing p, pinnules, some of which are included in the walls of the cup, viz. 

 f.p. ; .s, sy/ygy. The intercalated plates, which bind these elements together, are shaded. 



united by iBr, but do not merge in the dorsal cup. Cup large, com- 

 posed of 5 RR, 5 BB, 5 IBB, and a large centrale, with no trace of a 

 stem. Genus Marsupites, J. S. Miller ex Mantell MS. (1821 ; synn. 



s c - 



--- c 



Fir.. CIV. 



MurtiipitKs testudinarins. 1, the cup from the side, showing the character of the ornament ; 

 om Brit. Mus. specimen, E201S), x jj. 2, the radials and proximal region of the arms (from 

 it. Mus. 5482), nat. sixe. C, centrale; /, fulcral ridge of radial facet; p, pinnules; s, 

 r.ygies. Other letters as usual. 



Sitidaria, Cumberland ; Marsupiocrinus, de Blainville), Upper Cretaceous, 

 England and Germany (Fig. CIV. ; see also Fig. XVII. 4). The relations 

 of the genus are not yet clear. FAMILY 12. BATHYCRINIDAE. Dendro- 



