564 TWANS. ST. LOUIS ACAD. SCIENCE. 



Catalogue of the Species of the Graptolite Family belonging 

 TO THE Niagara Group.* 



Genus Phyllograptus (Hall). 



Phyllograptus'y}) dubius, n. s. 

 Genus Retiolites (Barrande). 



Retiolites venosus (Hall). 

 Genus Dendrograptus (Hall). 



Dendrograptus ramosus, n. s. 



Dendrograptus simplex, n. s. 



Dendrograpius dawsont, n. s. 



Dendrogfaftus fro7idosuH,i n. s. 



Dendrograptus prcegracth's, n. s. 



Dendrograptus spinosus, n. s. 



Dendrograptus [CkauHograptus) novfUus (Hall), 1879. Trans. 

 Albany' Inst., vol. x. 

 Genus Callograptus (Hall). 



Callograptus niagarensis (Spencer), 1S78. Can. Nat. 



Callograptus grant/', n s. 



Callograptus [Dendrograptus) niulticaulis, n. s. 



Callograptus minutus, n. s. 

 Genus DiCTYONEMA (Hall). 



Dictyonema retifortne (Hall), 1852. Pal. N. Y. 



Dictyojiema gracile (Hall). 1852. Pal. N. Y. 



Dictyonema -websteri (Dawson), 1868. A.cad. Gaol. 



Dictyonema splendens (Billings), 1874. Can. Pal. Fossils. 



Dictyonema tenellum (Spencer), 1878. Can. Nat. 



Dictyonema expansutn, n. s. 



Dictyonema pergracile (Hall & Whitfield), 1872. 20th Report of 

 N. Y. State Mus. N. H. 

 Genus Calyptograptus (Spencer). 



Calyptograptus cyathiformis (Spencer), 1878. Can. Nat. 



Calyptograptus subrctiformis (Spencer), 1878. Can. Nat. 



Calyptograptus tnicronematodes, n. s. 



Calyptograptus( .') radiatus, n. s. 

 Genus Rhizograptus (Spencer). 



Rhizograptus bulbosus (Spencer), 1878. Can. Nat. 

 Genus Acanthograptus. 



Acanthograptus granti (Spencer). 1S7S. Can. Nat. 



Acatithograptus pulc/ier, n. s. 

 Genus Inocaulis (Hall). 



Inocaulis plumulosus (Hall), 1852. Pal. N. Y. 

 *Inocaulis bellus (Hall). 1852. Pal. N. Y. 



Inocaulis -walker i, n. s. 



Inocaulis{}) problematicus (Spencer), 1878. Can. Nat. 



♦ Graptolithus clintonensis of the Clinton of New York has not been found in Canada . 



