20 SMITHSONIAN INSTITUTION 



PLATE VII 

 (All figures natural size except where otherwise stated) 



PAGE 



Figs. 1-3. Calpiocrinus intermedius n. sp 156 



Fig. la. A complete specimen with stem and encrusting root, from 1. post, radius; inner branch of 

 dichotom reduced in size; all BB except post, covered by IBB; stem with strongly 

 alternating columnals from calyx down. X 2. Author's collection. 



Dudley, England. 

 lb. Posterior view of same removed from matrix. Natural size. 



ir. Basal view of same, showing how RR meet above post. B ; stem removed at fracture. X 2. 

 2. Larger flattened specimen, from 1. post, interradius, showing same structures. Natural 



size. British Museum No. 57470. Dudley, England. 



3a, b. Exterior and interior views of fragmentary specimen from Gotland, perhaps of this 

 species, with points of BB slightly exposed. X 2. Riks Museum. 

 Wenlock Gr, ; Silurian. England and Sweden. 



Fig. 4. Calpiocrinus ovatus Angelin 157 



Figs. 40, &. The type, original of Angelin, pi. 16, figs. 17-19; anterior and right posterior views. 



X 2. Riks Museum. Gotland (/). 



4c. Basal view of same showing all BB, except post., covered by IBB. X 2. 

 4(J. Axillary brachial on exposed inner arm, at left in fig. 4a, with first plate of ramule, from 



above. X 2. 

 4?. The same from right side. X 2. 

 4/. Similar axillary on inner arm at right of same figure, with first plate of ramule from right 



side, invisible from the dorsal side ; fig. 4a also shows smaller size of ramules on the 



inner arm than on the outer, where they are in plain view. X 4- 

 Wenlock Gr. ; Silurian. Gotland, Sweden. 



Fig. 5. Calpiocrinus heterodactylus .Angelin 157 



Figs. 5a, b, c. The type, original of Angelin, pi. 3, fig. 10; anterior, posterior, and left anterior views. 

 X 2. Riks Museum. Gotland (/). 



5(f. Basal view of same; all BB covered by IBB. X 2. 



5^. Detail of arms, at a, b, c, of fig. 5a, showing presence of ramules on inner arms, b and c, 

 but much smaller than those on outer arm a. X 2. 

 Wenlock Gr. ; Silurian. Gotland, Sweden. 



(?) Fig. 6. Homalocrinus peculiaris n. sp 159 



Figs. 6a, b, c. Right anterior, posterior, and basal views of an imperfect specimen, with infrabasals 

 broken off. It has but one IBr, and- two IIBr; and has a large RA in form of a 

 radial, in r. post. ray. X 2. Author's collection. 

 Wenlock Gr. ; Silurian. Wisby, Gotland, Sweden. 



