BRACHIOPODA. 



353 



CRANIID^^^Cmtinued. 



Orbicular ins, Dumeril, 1806. Pholidops, Hall, 1869. 



Craniolites, Schlotheim, 1820. 



Choniopora, Schauroth, 1854. 

 Ckaniella, (Ehlert, 1887. 

 Cabdinocbania, Waagen, 1885. 



Craniops, Hall, 1859. 

 PsEUDOCBANiA, McCoy, 1851. 



Paloeocrania, Quenstedt, 1871. 



Sub-class ARTICULATA, Huxley; ARTHROPOMATA, Owen. 

 Order Pbotbemata,* Beecher. 



FAMaT KUTORGHNID^\ Schucubrt. 



KuTOBGiNA, Billings, 1861. (?) Volbobthia, von Moller, 1873. 



ScHizoPHOUS, Waagen, 1885. Iphidea, Billings, 1872. 



Familt 



Obthis, Dalman, 1828. 



Orthambonites, Pander, 1830. 

 Plectoethis, Hall, 1892. 

 DiNOBTHis, Hall, 1892. 

 Plaesiomys, Hall, 1892. 

 Hebebtella, Hall, 1892. 

 Orthosteophia, Hall, 1883. 

 Platystbophia, King, 1850. 

 Heterorthis, Hall, 1892. 



ORTHID^ Woodward. 



Bilobites, Linne, 1775. 



Dicoelosia, King, 1850. 

 Dalmanella, Hall, 1892. 

 Rhipidomella, (Ehlert, 1880. 



Rhipidomys, ffihlert, 1887. 

 ScHizoPHOBiA, King, 1850. 

 Orthotichia, Hall, 1892. 

 Enteletes, Fischer de Waldheim, 1830. 



Syntrielasma, Meek, 1865. 



Family fiTROPnOME]:^IDJK, Ki><5. 



Obthidiom, Hall, 1892. Debbya, Waagen, 1884. 



Stbophomena, Rafinesque (de Blain- Meekella, White and St. John, 1868. 

 ville), 1825. Streptoehynchus, King, 1850. 



• In employing' an the fundamental divisional distinction in the Articulata, the presence of the deltidium 

 or deltidial plates, the term Protrkmata, better than any other, covers those gfenera in which the primitive 

 pedicle-covering is rei)resenteil by either the deltidiimi, the spondylium, or both. 



tMr. SciicciiKRT includes nnder this family term two genera, KuTORCiyA and Schizopholis, which have 

 asiially been regarded as belonging to the inarticulate sub-class. The reasons for installation of these as 

 the elementary family of the Articulata are given elsewhere. 



