BRACHIOPODA. 357 



Family TEREBRATELLIDJE, Kino. 



Tropidoleptds, Hall, 1857. 



Sub-order Helicopegmata, or Spiriferacea, Waagen. 



Family ATMTPID^, Dall. 



Hallina, N.H.WinchellandSchuchert, Cataztga, Hall, 1893. 



1892. Glassia, Davidson, 1882. 



Protozyga, Hall, 1893. Atrypina, Hall, 1893. 



(?) Cyclospira, Hall, 1893. (?) Clintonella, Hall, 1893. 



Zygospira, Hall, 1862. Atrypa, Dalman, 1828. 



Anazi/ga, Davidson, 1882. Karpinskia, Tschernyschew, 1885. 



Orthonom^a, Hall, 1858. Gruenewaldtia, Tschernyschew, 1885 



Family SPIRIFERINIDJE, Davidson. 



Cyrtina, Davidson, 1858. Spiriferina, d'Orbigny, 1847. 



Family SPIRIFERIDJE, King. 



Spirifer, Sowerby, 1815. Martinia, McCoy, 1844. 



Trigonotreta, Koenig, 1825. Martiniopsis, Waagen, 1883. 



Brachythyris, McCoy, 1844. Cyrtia, Dalman, 1828. 



Fusella, McCoy, 1844. Syringothyris, A. Winchell, 1863. 

 Choristites, Fischer deWaldheim, 1825. Amboccelia, Hall, 1860. 



Delthyris, Dalman, 1828. Metaplasia, Hall, 1893. 



Reticulakia, McCoy, 1844. Verneuilia, Hall. 1893. 



Family NUCLEOSPIRID^^, Davidson. 



NucLEOSPiRA, Hall, 1858. Whitfieldella, Hall, 1893. 



Dayia, Davidson, 1882. Hyattella, Hall, 1893. 



HiNDELLA, Davidson, 1882. (?) Camarospira, Hall, 1893. 



Family CCELOBPIRIDM. 



Anoplotheca, Sandberger, 1856. Leptoc(ELIA, Hall, 1859. 



Bifida, Davidson, 1882. (?) Anabaia, Clarke, 1893. 



C(EL0SPiRA, Hall, 1863. 



