354 
PALEONTOLOGY OF NEW YORK. 
aS* TR OPHOMENI BJE — Continued. 
Orthothetes, Fischer de Waldheim, Triplegia, Hall, 1858. 
1830. Dicraniscus, Meek, 1872. 
Hipparionyx, Vanuxem, 1842. Mimulus, Barrande, 1879. 
Kayserella, Hall, 1892. Streptis, Davidson, 1881. 
Family LEPT2ENIPJE. 
LepTaEna, Dalman, 1828. 
Leptagonia, McCoy, 1844. 
Bafinesquina, Hall, 1892. 
Stropheodonta, Hall, 1852. 
Brachyprion, Shaler, 1865. 
Douvillina, CEhlert, 1887. 
Leptostrophia, Hall, 1892. 
Pholidostrophia, Hall, 1892. 
Strophonella, Hall, 1879. 
Amphistrophia, Hall, 1892. 
Leptella, Hall, 1892. 
Plectambonites, Pander, 1830 
Christiania, Hall, 1892. 
LeptaEnisca, Beecher, 1890. 
Davidsonia, Bouchard, 1847. 
Family CHONETIBjE. 
Chonetes, Fischer de Waldheim, 1837. Chonetina, Krotow, 1888 
Anoplia, Hall, 1892. Chonostrophia, Hall, 1892 
CiioNETELLA, Waagen, 1884. Chonopectus, Hall, 1892. 
•Family PRODUCTIBJE, Gray. 
Strophalosia, King, 1844. 
Orthothrix, Geinitz, 1847. 
Lept(xnalosia, King, 1845. 
Daviesiella, Waagen, 1884. 
Aulosteges, von Helmersen, 1847. 
Productella, Hall, 1867. 
Productus, Hall, 1867. 
Marginifera, Waagen, 1884. 
Proboscidella, QEhlert, 1887. 
Etheridgina, CEhlert, 1887. 
Family THECIPIIBM, Gray. 
Lyttonia, Waagen, 1883. Oldhamina, Waagen, 1883. 
Family RICHTHOFENIBM Waagen. 
Richthofenia, Waagen, 1883. 
