44 BULLETIN NO. 30, UNITED STATES NATIONAL MUSEUM. 



Page. 



P. peniclUus, M. Si W., 1860, pi. xix, flga. 6 (t-c 266-267 



P.plemis, M. & W.,1860, pi. xx.fig. 3 - 267-268 



Taxocrinus, Phillips, 1843 268-270 



Forbesiocrinus, de Koniuck & Le Hon, 1854 270 



Taxocrinus semiovaha, M. &. W., 1860, pi. xx, figs. 4a-b 272-274 



Blantoidea. 



6ranatocri7ius, Troost, 1850 274-275 



0. cornutus, sp., M. &. W., 1860, pi. xx, flg. 1 276 



Asteroidea. 



*Schoenaster, M. & W. [1860] 277-278 



S.fimhriatus, M. & "W., 1860, pi. xix, flg8.7a-d 278-280 



MoUusca. 



Brachiopoda. 



Productus, Sowerby, 1814 280 



P. scilulus, M. & "W., 1860, pi. xx, figs. 5 o-d 280-281 



Lamellihranchiata. 



Myalina, de Koninck, 1844 281 



Jf. concentrica, M. & "W., 1860, pL xix, fige. 3 a-c 281-282 



Yoldia, Moller, 1842 282 



r. ? levistriata, M. & W., 1860, pi. xx, figs. 7 a and 6 282-283 



Nuculana, Link, 1807 283 



N.? curta, M. & W., 1861, pi. xx, figs. 6 a and 6 283-284 



Gasteropoda. 



Dentalittni, Linnajus, 1758 284 



D. venustuw, M. & "W., 1861, pi. xix, flg. 6 284 



Straparollus, Mont fort, 1810 285 



S. similis, M. & W., 1861, pi. xix, figs. 4 0-6 285-286 



S. similis var. planus, M. & W., 1861, pi. xix, fig. 5 a-c 286 



Cephalopoda. 



Orthoceras, Auct 286 



O. expansum, M. & "W., 1860, pi. xx, figs. 8 o-c 286-287 



raVBKTEBRATE F0S8n.8 OF THE CHESTEK GROUP. 



Jtadiata. 



JEchinodermata. 

 Orinoidea. 



Pterotocrinus, Lyon & Casseday, 1859 288 -290 



P. crassus, M. & W. , 1860, pi. xxiii, figs. 2 o, 6, and flg. xxix, p. 292 290-292 



P. chesterensis, M. & W., 1860, pi. xxiii, flgs 1 Or-c, and fig. 30, p. 293 292-293 



Echinoidea. 

 Perischoechinidce. 



Arehoeocidaris, McCoy, 1844 '. 294-295 



A. mucronata, M. & W., 1860, pi. xxiii, figs. 3 a-c 295-296 



MoUusca. 



Brachiopoda. 



Productus, Sowerby, 1812 297 



P. parvus, M. & "W., 1860, pi. xxiii, figs, i a-e 297-298 



Spirifer, Sowerby, 1815 298 



Subgenus Martinia, McCoy, 1844 298 



S. {Martinia) glaber var. contractus, M. & "W., pi. xxiii, figs. 5 a, 5 298-299 



. Lamellibranchiata. 



Myalina do Koninck, 1844 300 



M. anguXata, M. & W., 1860, pi. xxiii, flgs. 1 a,b 300-301 



Schizodus, King, 1844 301 



H. chesterensis, M. &.W., 1865, pi. xxiii, figs. 6 a, b 301-302 



Oasleropoda. 



Straparollus, Montfort, 1810 302 



S. planidorsatus, M. & W., 1860, pi. 24, figs. 2 a-c 302-303 



Pleurotomaria, Delianco, 1826 303 



P. chesterensis, M. & "W"., 1860, pi. xxiv, figs. 1 a-e 303-304 



Cephalopoda. 



Orthoceras, Auct 304 



O. annuiatocostatum, M. W., 1861, pi. xxiv, flgs. 3 a, 6 304-305 



*<rxoivo;, a rope; eumip, a star. 



