32 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 95 



Plate 7 



PAGE 



Fig. I. Hemicystitcs devonicus,. new species 14 



The holotype, X 4, incrusting a Chonetes, exhibiting the short, 



quickly tapering ambulacra. 

 Devonian (Long Lake beds of Presque Isle formation) : Quarry, 

 Alpena Portland Cement Co., Alpena County, Michigan. 



Fig. 2. Hemicystites (Agelacrinifes) latiuscuhis (Barrande) 11 



Well-preserved example, X 2. 

 Ordovician (D4) : Zahorzan, Bohemia. 



Figs. 3, 4. Hemicystites (Agelacrinites) bohernicus (Barrande) 11 



A large distorted specimen and a small, more perfect individual, 



XI. 

 Ordovician (D2) : Mount Drabow^, Bohemia. 



Fig. 5. Hemicystites {Agelacrinites) confertus (Barrande) 11 



Theca, X 1.6, w^ith marginal plates little developed. 

 Ordovician (D2) : Mount Drabow, Bohemia. 



Fig. 6. Hemicystites {Agelacrinites) simplex (Barrande) 11 



A species similar to the preceding but with well-developed mar- 

 ginal rows, X 2. 

 Ordovician (D4) : Zahorzan, Bohemia. 



Fig. 7. Lcpidodisctis milleri Sharman and Newton 20 



Specimen, X 3, showing the generic characters clearly. 

 Subcarboniferous : Waterhead, Cumberland, England. 



Fig. 8. Lcpidodisctis {Agelacrinites) buttsi {Clarke) 20 



Type specimen, X i-3, with broad marginal area. 

 Mississippian (between Wolf Creek conglomerate and Mount 

 Hermon sandstone) : Cattaraugus County, New York. 



Fig. 9. Agelacrinites {Agclacrimis) blairi (Miller) 16 



Photograph of the holotype, X 4, attached to arms of a batocrinid. 

 Mississippian (Warsaw) : Boonville, Missouri. 



Fig. id. Agelacrinites hanoveri Thomas 16 



One of the types, X 4, a small individual with broad marginal rim. 

 Devonian (Shell Rock) : Mason City, Iowa. 



Fig. II. Discocystis {Agelacrinites) kaskaskicnsis (Hall) 21 



(See also pi. i, figs. 4, 5 ; pi. 3, figs. 4-6.) 

 Basal view of theca, X 2, showing central opening and many rows 



of closely packed marginal plates. 

 Chester (Glen Dean) : Sloans Valley, Kentucky. 



Fig. 12. Isorophusella {Lcbetodisciis) incondita (Raymond) 19, 20 



A specimen from the type slab, X 4, showing slightly curved rays 



and broad oral area. 

 Trenton (Cystid bed) : Ottawa, Ontario. 



Fig. 13. Foerstediscus splendens, new species 10 



Holotype, X 4, illustrating the dextrally curved rays, mosaic in- 

 terambulacrals, and tubelike anal area of this striking species. 

 Black River (Decorah shale, top of Rhinidictya bed) ; Ford 

 plant, St. Paul, Minnesota. 



