224 



NEW YORK STATE MUSEUM 



Pholadella radiata, 116 

 Pholado'caris lutheri, 94 

 Phragmoceras, 77 



accola, 77-79, 115 



angustum, 78 



(bolli, 77 



ellipticum, 78 



hector, 78 



hoyi, 78 



nestor, 78 

 Plectodiscus molestus, 26 

 Pleurocystites elegans, 28 



hlitextus, 28, 29 



mut. exornata, 28, 29 



matutina, 29 



robustus, 28, 29 



squamosus, 28, 29 

 mut. exornata, 28, 29 

 mut. matutina, 27 

 Plumalina plumaria, 10 

 Porpita sp., 25 

 Promopalaeaster, 27 



dyeri, 37 

 Protaster forbesi, 59 

 Protonympha marcellensis, 81 

 Protospira minuta, 72 

 Pseudoniscus aculeatus, 106 



clarkei, 106, 107 



roosevelti, 105-7, 108 

 Pterinea emacerata, 74 



poststriata, 74, 114 

 Ptilonaster princeps, 44-46 

 Ptychoparia matheri, 89 



Raphistoma eompressum, 20 

 Raymond, Percy E., A new Ceraurus 



from the Chazy, 121-26; cited, 29, 



91, 128, 13S, 142, 148 

 Reed, F. R. Cowper, cited, 129, 143, 



144, 145, 148 

 Ribeiria compressa, 20 

 Richter, R., cited, 145, 148 

 Roemer, cited, 98 

 Rominger, C, cited, 8 

 Ruedemann, R., cited, 15, 21, 28, 109, 



113, 135, 142 



Salter, J. W.,. cited, 143 

 Sarle, cited, 81 



Schmidt, Fr., cited, 91, 106, 123, 129, 



130, 138, 143 

 Schondorf, Friedrich, cited, 42, 54, 58 

 Schuchert, Charles, cited, 29, 33, 34, 



44, Si, 52 

 Scoliostoma bohemicum, 73 

 Segerberg, Carl. O. & Mloberg, Joh. 



Chr., cited, 142 

 Septameroceras (?), 81 



sp., 114 



septoris, 80 

 Serpulites, 83 



angustifolius, 85, 87 



annulatus, 89 



crassimarginalis, 87 



dispar, 83, 84 



dissolutus, 85, 87, 88 



gracilis, 84, 87 



hortonensis, 89 



inelegans, 89 



interrogans, 86 



longissimus, 83, 84, 85 



longus, 89 



lumbricoides, 87 



magnus, 88 



splendens, 85 



tener, 88 

 Silurian of Argentina, two new star- 

 fishes from, 116 

 Slater, Ida L., cited, 86 

 Sollas, cited, 63 

 Spathio'caris, 98 



chagrinensis, 95, 96 



cushingi, 06 



emersoni, 94, 95 



lata, 94 



williamsi, 96 

 Spencer, W. K., cited, 52, 54 

 Sphenothallus, 83 



angustifolius, 83, 84, 86 

 Squamaster, 59 



echinatus, 61 

 Starfishes, from the Silurian of 



Argentina, 116 

 Stein, Edwin, cited, 22 

 Stelleroidea, 62 

 Stenaster obtusus, 52, 53 



salteri, 52-54 

 Strophograptus trichomanes, 17 

 Stiirtz, N., cited, 41, 42, 60, 63 



