SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 57 



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San Saba County, Texas, Saukia cf. coloradoensis from 378 



Saratoga Springs, New York, Upper Cambrian locality 76 372 



Saukia, new genus, described and discussed 373 



compared with Calvinella 348, 375 



Conokephalina ; 348 



Conokephalina ornata 348 



Dikelncephaliis 348, 364, 374 



Dikelocephalus minnesotensis 370 



Dikelocephalus ? tribulis 372 



Osceolia : 375. 385 



genotype, Dikelocephalus lodensis Whitfield 374 



geographic distribution of genus 375 



locality of genus discussed 36a 



observations on the genus 348, 375 



referred to Dikelocephalinse 348 



size of, compared with Dikelocephalus minnesotensis 374 



stratigraphic range of genus 375 



coloradoensis, n. sp., described and discussed 376 



figured, text-figs. 13-16 376 



compared with Saukia crassiinarginata 376 



formation and locality 2>77 



in synonymy 376 



listed with description of genus 375 



cf . coloradoensis, fragments from Texas 378 



crassimarginata (Whitfield), described and discussed 377 



figured, pi. 61, fig. 8 394 



pi. 65, figs. 9, 10 402 



pi. 66, figs. 2-5, 5a 404 



allied to Saukia junia 378 



compared with Saukia coloradoensis 2>77 



Saukia ladensis Z77 



form of dorsal shield compared with Dikelocephalus minne- 

 sotensis 347 



formation and locality 378 



in association with St. Lawrence fauna 356 



in synonymy 277 



listed from locality 78b 361 



from locality 85 360 



with description of genus 375 



with St. Lawrence fauna 356 



vertical range of, compared with Saukia lodensis 360 



cf. crassimarginata (Whitfield), listed from Jordan formation 355 



fallax, n. sp., described and discussed 378 



figured, pi. 67, figs. 21, 21a, 22, 22a 407 



associated with Dikelocephalus in Texas 356 



compared with Saukia leucosia 378 



Saukia pepinensis 378 



Saukia pyrene 378, 382 



Saukia marica » 380 



