NO. 6 NEW AMERICAN EDRIOASTEROIDEA BASSLER 29 



PAGE 

 Figs. 3, 4. Hemicystites {Lebetodisctis) mnltibrachiatiis (Raymond) 11 



3. The holotype, X 4, probably representing an abnormal indi- 

 vidual, with eight ambulacra produced by branching of the 

 original five. 



4. A specimen, X 4, of apparently the same species with a normal 

 number of ambulacra. 



Trenton (Hull formation) : Kirkfield, Ontario. 



Figs. 5, 6. Hemicystites parasiticus (Hall) 11 



5. The holotype, X 4, clearly identical, although broken, with 

 the following. 



6. A complete specimen, X 4, consisting of a thin, flattened disk 

 attached to a Spirijcr, with characteristic short, broad, straight 

 ambulacra and large anal pyramid. 



Clinton (Rochester shale) : Lockport, New York. 



Fig. 7. Hemicystites germanus, new species 13 



Two examples, X 4, of this minute species attached to a Rafine- 



squina. The quickly tapering ambulacra with small plates and 



the broad oral area are characteristic. 

 Trenton (Catheys) : Love Branch, Maury County, Tennessee. 



Fig. 8. Hemicystites curtus, new species 12 



The type, X 4, a beautifully preserved small disk attached to a 

 limestone slab. The ambulacra are exceptionally short and 

 broad and the ambulacral plates larger than usual. 

 Black River (Platteville limestone) : Rockton, Illinois. 



Fig. g. Hemicystites pauliamis, new species 13 



An individual, X 4, similar to H. germanus but possessing larger, 



narrower ambulacra with more plates in each row. 

 Black River (Decorah shale) : St. Paul, Minnesota. 



Figs. 10, 1 1. Hemicystites ( ?) carbonarius, new species 15 



Holotype, X 4, and associated young example, X 4, both thin 

 disks attached to a pelecypod shell. Although they are well- 

 preserved specimens, the exact arrangement of the ambulacra in 

 each is indistinct. 

 Pennsylvanian (Bluefield shale) : Railroad cut, | mile east of 

 Adds Valley, West Virginia. 



Fig. 12. Agelacrinites southwortki, new species 16 



The holotype, X 4. a specimen perfect in all parts except the 



anal region. 

 Hamilton (Arkona beds, 20 to 30 feet below the Encrinal lime- 

 stone) : Marsh's Mills, Arkona, Ontario. 



Fig. 13. Agelacrinites (Agelacrinus) legrandcnsis Miller and Gurlcy 16 



A complete example, X 4, from the original locality exhibiting 



normal number and direction of ambulacra for the genus. 

 Kinderhook (Legrand formation) : Legrand, Iowa. 



