ECHINODEKMATA. 177 



No. 923. Eucalyptocrinus crassus, Hall. 



Roots, forming the base of the stem. From the same locality as the preced- 

 ing. Price, $0.40. 



No. 924. Eucalyptocrinus ovalis, Troost. 



Body and stem. From the same locality as the preceding. Price, $0.35. 



No. 925. Forbesiocrinus Agassizi, Hall. 



The Crinoids of this genus (or rather sub-genus of Taxocrinus) have three 

 basal plates, and five sub-radials ; four radial plates for each ray, and numerous 

 inter-radials. From the Burlington limestone (Carboniferous), Burlington, Iowa. 



Price, $0.50. 



No. 926. ForbesiocrillUS ramulOSUS, Lyon and Cass. 



Specimen showing stem, body and branching arms. From the Keokuk 

 limestone (Carboniferous), Crawfordsville, Ind. Price, $0.35. 



No. 927. Forbesiocrinus "Wortheni, Hall. 



From the Keokuk limestone (Carboniferous), Keokuk, Iowa. Price, $0.50. 



No. 928. G-lyptaster brachiatus, Hall. 



This genus is closely allied to Olyptocrinus. In this specimen, the arms are 

 free, and spread out on the surface of the stone, showing their under side. From 

 the Niagara limestone (Upper Silurian), Lockport, N. Y. Price, $0.40. 



No. 929. Glyptocrinus decadactylus, Hall. 



This Crinoid has a cup-shaped body with ten arms, which support twenty 

 tentaculated fingers. There are five pentagonal basal and five heptagonal 

 sub-radial plates, succeeded by five more sub-radials and as many radials. 

 Strong radiating ridges mark the surface of all the plates below the fingers. 

 The column is generally wanting. From the Hudson River group (Lower Silu- 

 rian), Cincinnati, O. Price, $0.15. 



No. 930. G-ranatocrinus cidariformis, Troost. 



This type of the genus is the Pentremites granu- 

 latus, Roemer. It is an elliptical Blastoidean, and 

 has elongated radial plates and short inter-radials. 

 From the Kaskaskia limestone (Carboniferous), 

 Tennessee. Price, $0.25. 



No. 931. Holocystites cylindricus, Hall. 



This new Cystidean was found in the Niagara limestone (Upper Silurian), 

 Racine, Wisconsin. Price, $0.25. 



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