AMERICAN SILURIAN CRINOIDS 
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Carpocrinus simplex (Phillips) 42 
Figs. 22, 22a. Complete crown, with stem, of specimen from Gotland, with pinnules well developed, 
two to each brachial, as shown in fig. 22a, enlarged. X 2. 
23. Another specimen from Gotland, showing the tegmen with ambulacra exposed. 
Wenlockian ; Gotland, Sweden. 
( ?) Desmidocrinus laurelianus new species 43 
Fig. 24. Crown with part of stem, r. ant. view; has 4 uniserial arms to the ray. 
24a. Posterior view of calyx, showing anal series. X 3/2. 
24b. Base of same. X 3/2. 
Laurel limestone; St. Paul, Indiana. 
(?) Desmidocrinus dubius new species 43 
Fig. 25. Crown with uniserial arms, bifurcating once or twice; post. view. 
Same horizon and locality as last. 
Cylicocrinus canaliculatus S. A. Miller 43 
Figs. 26, 27. Posterior and anterior views of calyx. 
28,28a. Lateral and basal views of calyx with 3 equal basal plates projecting in a wide rim. 
29. Basal view of small specimen with unequal basals and narrower rim. 
Laurel limestone; St. Paul, Indiana. 
Cylicocrinus spinosus new species 44 
Fig. 30. Basal hexagon, with strong spinose projections on BB ; dorsal view shewing small cavity 
occupied by a columnal. X 3/2. 
30a. Interior view of same, showing sutures connecting with lumen. X 3/2. 
Same horizon and locality as last. 
