BIBLIOGEAPHIC LIST OF GENERA AND SPECIES. 91 



Atrypa circulakis Hall. See Parastrophia hemiplicata. 



Atryi'A congesta Conrad. See Hyattidina congesta. 



Atrypa corallifera Hall. See Dictyonella corallil'era. 



Atrypa crassirostra Hall. See Whitfieldella cylindrica. 



Atrypa cuneata Hall. See Rhynchotreta cuneata americaua. 



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 disparilis. 



Atrypa dubia Hall. See Protorhyncha dubia. 



Atrypa emacerata Hall. See Rhynchonella emacerata. 



Atrypa equiradiata Hall. See Oamarotcecliia oeqniradiata. ^ 



Atrypa exigua Hall. See Zygospira exigua. 



Atrypa extans Emmons. See Triplecia extans. 



Atrypa flabella Shaler. See Coelospira hemispherica. 



Atrypa galeata Dalman. See Gypidula (Sieberella) galeata. 



Atrypa grayi Davidson. See Streptis grayi. 



Atrypa(?) gibbosa Hall. 



Atrypa gibbosa Hall, Pal. New York, 2, 1852, p. 79, pi. 20, fig. ]0. 

 Clinton: Clinton, New York. 



Atrypa hemiplicata Hall. See Parastrophia hemiplicata. 



Atrypa hemispherica Sowerby. See Coelospira hemispherica. 



Atrypa imbricata Hall. See Atrypa nodostriata. 



Atrypa impressa Shaler. See Atrypa reticularis. 



Atryp.a. increbescenh Hall. See Rhynchotrema capax and R, inrequivalve. 



Atrypa intermedia Hall. See Whitfieldella intermedia. 



Atrypa interplicata Hall. See Anastrophia interplicata. 



Atrypa l.evis Vanuxem. See Whitfieldella la'vis. 



Atrypa lamellata Hall. See Camarotcechia lamellata. 



Atrypa? lara Schuchert. See Wliitfieldella? lara. 



Atrypa laticorrugata Foerste. 



Atrypa lati-corrugata Foerste, Geol. Ohio, 7, 1895, p. 591, pi. 57A, fig. 10. 

 Upper Medinan (Brassfield): Dayton, Ohio. 



Atrypa lens Sowerby. See Stricklandinia lens. 



Atrypa lentiformis Vanuxem. See Atrypa reticularis. 



