BIBLIOGRAPHIC LIST OF GENERA AND SPECIES. 91 



ATRYPA CIRCULARIS Hall. See Parastrophia hemiplicata. 

 ATRYPA CONGESTA Conrad. See Hyattidiua congesta. 

 ATRYPA CORALLIPERA Hall. See Dictyonella corallifera. 

 ATRYPA CRASSIROSTRA Hall. See Whitfieldella cylindrica. 

 ATRYPA CUNEATA Hall. See Rhynchotreta cuneata americana. 

 ATRYPA CUSPIDATA Hall. See Triplecia cuspidata. 

 ATRYPA CYLINDRICA Hall. See Whitfieldella cylindrica. 

 ATRYPA DEFLECTA Hall. See Zygospira deflecta. 

 ATRYPA DENTATA Hall. See Rhynchotrema dentatum. 

 ATRYPA DISPARILIS Hall. See Atrypina diaparilis. 

 ATRYPA DUBIA Hall. See Protorhyncha dubia. 

 ATRYPA EMACERATA Hall. See Rhynchonella emacerata. 

 ATRYPA EQUIRADIATA Hall. See Camarotcechia sequiradiata. 

 ATRYPA EXIGUA Hall. See Zygospira exigua. 

 ATRYPA EXTANS Emmona. See Triplecia extana. 

 ATRYPA FLAB ELLA Shaler. See Cceloapira hemiapherica. 

 ATRYPA GALEATA Dalman. See Gypidula (Sieberella) galeata. 

 ATRYPA GRAYI Davidson. See Streptia grayi. 



Atrypa(?) gibbosa Hall. 



Atrypa gibbosa Hall, Pal. New York, 2, 1852, p. 79, pi. 20, fig. 30. 

 Clinton: Clinton, New York. 



ATRYPA HEMIPLICATA Hall. See Paraetrophia hemiplicala. 



ATRYPA HEMISPHERICA Sowerby. See Ccelospira hemiapherica. 



ATRYPA IMBRICATA Hall. See Atrypa nodostriata. 



ATRYPA IMPRESSA Shaler. See Atrypa reticularis. 



ATRYPA INCREBESCENS Hall. See Rhynchotrema capax and R. inaequivalve. 



ATRYPA INTERMEDIA Hall. See Whitfieldella intermedia. 



ATRYPA INTERPLICATA Hall. See Anastrophia interplicata. 



ATRYPA L^JVIS Vanuxem. See Whitfieldella Isevis. 



ATRYPA LAMELLATA Hall. See Camarotcechia lamellata. 



ATRYPA? LARA Schuchert. See Whitfieldella? lara. 



Atrypa laticorrugata Foerate. 



Atrypa lati-corrugata Foerste, Geol. Ohio, 7, 1895, p. 591, pi. 57A, fig. 16. 

 Upper Medinan (Brasafield): Dayton, Ohio. 



ATRYPA LENS Sowerby. See Stricklandinia lens. 

 ATRYPA LENTIFORMIS Vanuxem. See Atrypa reticularis. 



