xii 



Index. 



sacculus, Thecocystis '15, 56, 215 



Saint Paul, Minn. '15, 6 



Salter, J. W. '00, 193, 194, 198, 



200, 201, 202 

 sanitary principles '15, 399 

 saratogensis, Edrioaster '14, 122, 



(diagnosed) 170 

 Sardeson, F. W. '15, 6 

 sardesoni, Pyrgocystis '15, 6-10, ii, 



(diagnosis) '15, 57 

 saumplattchen '08, 548 

 Scalpellum, supposed species '15, 49 : 



cylindricum, fragile, granulatum, 



procerum, strobiloides, sulcatum, 



varium 

 Schondorf, F. '15, 317 

 Schuchert, C. '15, 400 

 septembrachiatus, Streptaster '15,265 

 signatus, Pollicipes '15, 49 

 Siluraster : perfectus 

 simplex, Eoactis '15, 320 

 Smith, W. E. '14, 117 

 Snake Hill shales '14, 171 

 Sollas, I. B. J. '15, 320 



■ W. J. '00, 201, '15, 320 



Sowerby, G. B. '00, 202, '08, 543 

 Spencer, W. K. '14, 116, '15, 55, 



212, 215, 263, 317, 318, 320, 395 

 spines '14, 167, '15, 7, 8, 10, 12, 56, 



319 



spine-pits '14, 197, 202 



Springer, F. '14, 194 



stalk of Asterozoa '15, 395, 396, 398, 



Starfish bed '15, 10 



Steganoblastidae '14, 193 



Steganoblastus '14, 193-203, tfs. 1-6, 



xv, (name) 193, '15, 212, 213, 214, 



preface : ottawaensis 

 Steinmann, G. '15, 316 

 stellata, Hemicystis '15, 56 

 stem '14, 194, 202, '15, 212 



supposed '00, 202 



Stictoporella bed '15, 6 

 Streptaster '08, 549, '15, 55, 214 

 strobiloides, Scalpellum '15, 51, 53, 



54, 58 



Stromatocystis '08, 549, '15, 213, 



215, 264, 317, 402, preface 

 subambulacrals, supposed '14, 171 

 subvective grooves '08, 544, '98, 545, 

 '00, 195, '14, 120, 197, '15, 7, 11, 

 259, 264 



subvective skeleton '15, 55, 266, 

 compared with Asterozoan '15, 317 



system '15, 212 



sucker action of attachment '00, 202, 

 '15, 214 



sulcata, Pyrgocystis '15, 54, (diagnosis) 



58 



sulcatum, Scalpellum '15, 51, 52, 

 53, 54, 58 



tegmen '14, 200, see also cover-plates 

 teratologic nature of Echinoderma 



'15, 396 

 Thecocystis '15, 56 : sacculus 

 Thomson, Wyville '00, 201 

 Trenton Limestone '08, 543, 549, 



'14, 194, (horizons discussed) 117, 



preface 



tubercles '15, 7, see also pustules 

 turret '15, 8, 11, 51-53 

 typicus, Archaster '15, 318 



Ulrich, E. O. '15, 6, see also 

 Winchell 



validus, Pollicipes '15, 49 

 varium, Scalpellum '15, 51, 54, 58 

 vererbungspotenzen '15, 396, 397 



water-vascular system '15, 266 

 Wenlock shale '15, 51, preface 

 Whiteaves, J. F. '00, 193, '14, 116, 

 193 



Winchell & Ulrich '14, 118 

 Withers, T. H. '15, 49, 50 

 Woodward, H. B. '08, 550 



Xenaster '15, 317, 318 : eucharis 



Ysputty Evan '00, 194 



Stephen Austin and Sons, Ltd., Printers, Hertford. 



