ECHINODERMATA. 



175 



No. 908. Caryocrinus ornatus, Say. 



Body with column. The Caryocrinoids are called by Pictet, Cystideans ; but 

 they are commonly ? placed among the true Crinoids, though differing from them 

 in having four pelvic and six costal plates. The column is round, composed near 

 the body of larger and smaller joints alternating with each other. The name of 

 this genus is derived from the nut-like shape of the body. This specimen is 

 from the Niagara group (Upper Silurian), Lockport, N. Y. Price $0.60. 



No. 909. Caryocrinus ornatus, Say. 



Very perfect specimen, beautifully marked. From the same locality as 

 the preceding. Price, $0.40. 



No. 910. Cheirocrinus clarus, Hall. 



Body, arms and stem. The body of this Crinoid is a 

 little flattened on the dorsal side below, and expands 

 slightly above ; the column is short — the lower joints being 

 longer than those above ; and the basal plate is concave. 

 This specimen is attached by a spreading root to the frag- 

 ment of another Crinoid column. From the Hamilton group 

 (Devonian), Ontario Co., N. Y. Price, $0.40. 



No. 911. Crotalocrinus rugosus, Miller. 



Body, stem and root, on pedestal. This ancient Crinoid is so called from its 

 peculiar shape and structure. The sub-divisions of the arms begin at the very 

 edge of the cup, and become so numerous as to form a perfect network in the 

 shape of a convoluted funnel-like organism of the finest basket-work, instead of 

 the rayed arrangement of the common Encrinite. The stem is made up of tu- 

 berculated joints. From the Upper Silurian, Dudley, England. 



Size, 18 x 2. Price, $1.50. 



No. 912. Cupellacrinus magnincus, Troost. 



This is a sub-genus of Platycrimis. It has three basal, and ten radial 



plates, and ten arms. From the Upper Helderberg (Devonian), Decatur Co. 



enn " Price, $0.30. 



No. 913. Cyathocrinus Hoveyi, Hall. 



The body of this Crinoid has three series of five plates, the last with five 

 intercalated pieces. From the Keokuk limestone (Carboniferous), Crawfordsville, 

 Ind. ,, . *„ .,„ 



Price, $0.40. 



No. 914. Cyathocrinus multibrachiatus, Lyon and Cassedy. 



From the same locality as the preceding. Price, $0.25. 



No. 915. Cyathocrinus ornatissimus, Hall. 



Several bodies on slab. From the Portage group (Devonian), shore of Lake 

 Erie. N. Y. „ . 



Price, $0.60. 



