392 Forty-second Report on the State Museum. 



-? 



Family — 



190. Eichwaldia, Billings, 1858. | 191. Dictyonella, Hall (M.S.) 1867. 



Thecidid^:. 



192. Lyttonia, Waagen, 1883. | 193. Oldhamina, Waagen, 1883. 



Steingocephalid^. 

 194. Stringocephalus, Sandberger, 1842. 



Terebratulidj:. 



195. Terebratula, Muller, 1776. 



196. Dielasma, King, 1859. 



197. Epithyris, King, 1850. 



198. Waldheimia, King, 1850. 



199. Cryptacanthia, White and St. 



John, 1868. 



200. Eudesia, King, 1850. 



201. Hemiptychina, Waagen, 1883. 



The [?] before the name indicates a doubt as to the family relations of 

 the genus ; the (?) a doubt as to whether the genus occurs in rocks of 

 Paleozoic age. 



202. Centronella, Billings, 1859. 



203. Cryptonella, Hall, 1861. 



204. Kensselseria, Hall, 1859. 



205. Meganteris, Suess, 1856,= Me- 



galanteris, Barrois, 1889. 



206. [?] Leptoccelia, Hall, 1857. 



207. Notothyris, Waagen, 1882. 



LIST OF MICEOSCOPIC SECTIONS OF BKACHIOPODA. 



Decembee 1, 1888. 



Number of 

 sections. 



Lingula punctata 2 



densa 2 



Lingulepis pinniformis 2 



Discina Oonradi 4 



media 6 



Pholidops Hamiltoniee 2 



Crania Hamiltonise 4 



Orthis multistriata 3 



Iowensis 8 



Yanuxemi 18 



hybrida 13 



Penelope 5 



subquadrata 2 



elegantula 11 



flabella 6 



Clytie 4 



Livia 4 



tricenaria 3 



biforata 4 



lenticularis 3 



testudinaria 15 



perveta 5 



impressa 2 



emacerata 3 



occidentalis 17 



oblata 5 



Number of 

 sections. 



Orthis sinuata 4 



insculpta 3 



plicatella 1 



Tulliensis 7 



borealis 2 



pectinella 2 



Orthostrophia strophomenoides. 1 



Strophomena alternata 9 



rhomboidalis 18 



Strophonella semifasciata 1 



re versa 1 



Strophodonta arcuata 4 



ampla 4 



perplana 15 



crebristriata 5 



demissa 15 



Junia 3 



nacrea 4 



concava 15 



striata 3 



Leptaena sericea 4 



Streptorhynchus planoconvex- 



um 2 



crenistria 1 



subplanum 2 



hipparionyx .. 1 



