OLENELLUS AND OTHER GENERA OF MESONACID.E 



OlcncUiis — Continued. 



tliompsoni — Continued. page 



compared with Olenelhis lapivortlii 331 



Padcutnias traiisifans 306, 307, 30S, 338, 339 



JJ'aniicria i^'alcottanus 303 



facial sutures not present in 242 



formation of telson 234, 266 



geographic distribution of 252 



mentioned 245, 248, 256, 312, 314, ;i27, 338 



Pccdcumias first placed as variety of 304 



stages passed through in development 234 



stratigraphic distribution tabulated 251 



telson of. compared with posterior portion of Mcsonacis ver- 



iiiontaiia 233, 266 



tlioinpsoiii crassiiiwrginatus, new variety 340, pi. 35, figs. 8-10 



compared with IVanncria zcalcotfaitus 303 



mentioned 248 



stratigraphic distribution tabulated 251 



z'crnionfana Billings, in synonymy 205 



Ford, in synonymy 265 



Hall, in synonymy 264, 265 



Holm, in synonymy 266 



Whitfield, in synonymy , 265, 305 



zvalcotti (Shaler and Foerste) 341, pi. 24, fig. 11 



Grabau, in synonymy 341 



Walcott, in synonymy 341 



associated fossils listed 341 



compared with ElUpioccphala asaphoides 341 



mentioned 248 



stratigraphic distribution tabulated 251 



sp. Burr, in synonymy 280 



sp. Grabau, in synonymy 280 



sp. Moberg, in synonymy 341 



sp. undt. (Scotland) 342, pi. 39, fig. 14 



stratigraphic distribution tabulated 251 



sp. undt. ( Sweden ) 341 



compared with Alcsojiacis forclli 342 



stratigraphic distribution tabulated 251 



(Elliptocephalus) Ford, in synonymy 267, 270 



(Gcorgiellus) Pompeckj, in synonymy 268 



asaphoides Pompeckj, in synonymy 271 



(Holinia) broggcri Burr, in synonymy 279, 284 



Grabau, in synonymy 279, 284 



Pompeckj, in synonymy 279 



(Shimer), compared with Paradoxidcs harlani 254-255, 



text-figs. 12 and 13, p. 255 



Walcott, in synonymy. 279 



calez'i Walcott, in synonymy 282 



callavci Cole, in synonymy 282 



Lap worth, in synonymy 282 



