714 



GEORGE W. STOSE 



Solenopora compacta. 

 Camarocladia cf. rugosum. 

 Co'lumnaria halli. 

 Tetradium columnare. 

 T. cellulosum. 



Caryocystites sp. nov. 

 Anolotichia impolita. 

 Nicholsonella laminata. 

 Batostoma cf. magnopora. 

 Hemiphragma irrasum. 

 Helopora divaricata ? 



Phylloporina reticulata. 



Hebertella borealis. 



H. vulgaris. 



H. bellarugosa ? 



Rafinesquina sp. undet. 



Strophomena ( ? Leptaena) char- 



lottae. 

 Plectambonites asper. 

 Rhynchonella plena. 

 Zygospira recurvirostris. 

 Leperditia cf. fabulites. 

 Isochilina cf. gracilis. 

 Platymetopus cf. trentonensis. 



Rhinidictya fidelis. 



Pachydictya cf. foliata and robusta. 



Escharopora confiuens. 



The third zone, characterized by Beatricea, is regarded as repre- 

 senting the Lowville ("Birdseye") of New York. Of the 37 species, 

 the folio wins; have been identified. 



Helicotoma planulatoides. 

 H. verticalis ? 



Omospira cf. alexandra. 

 Leperditia cf. fabulites. 

 Isochilina n. sp. (cf. I. gracilis). 

 I. n. sp. (cf. I. Ottawa). 



Macro notella ulrichi. 

 Drepanella macra. 



Beatricea n. sp. 

 Tetradium cellulosum. 

 Echinosphaerites sp. 

 Mesotrypa ? sp. undet. 

 Diplotrypa ? sp. undet. 

 Stictoporella sp. undet. 

 Dinorthis cf. meedsi. 

 Triplesia sp. nov. 

 Zygospira uphami. 



The upper division is the Siniiites zone, and although it corresponds 



with the upper zone of the Chambersburg belt, it is not succeeded 



directly by the graptolite-bearing shale but by a considerable thickness 



of intervening barren calcareous shales and thin black limestones. 



Of the 32 species the following have been identified by Mr. Ulrich, 



who correlates them with the Normanskill division of the Trenton 



of New York. 



Hindia sp. undet. 



Lingula riciniformis. 



Lingulops n. sp. 



Dalmanella n. sp. 



Dinorthis cf. germana and subquad- 



rata. 

 Plectambonites pisum. 

 P. n. sp. (i) (aff. P. trans- 



versalis). 

 P. n. sp. (i) (aff. P. sericea). 



Christiania n. sp. 

 Triplesia n. sp. 

 Sinuites cancellatus. 

 Cyrtolitina nitidula. 

 Eccyliomphalus spiralis. 

 Strophostylus textilis. 

 Cyclora minuta. 

 C. depressa ? 



Orthoceras junceum. 

 Trinucleus concentricus ? 

 Cyphaspis matutina. 



