. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. 279 fine concentric stri;e; band limited by linear carina on either side, the concentric stri;e making an abrnpt retral curve within. Found in the rieurodict3'um beds, chiefly as casts. Fleurotomaria itvs, var. tenuisjnra, Hall, differs in the greater number of volutions (sev^en or more); greater ro- tundity of the last two volutions; strong revolving stride, coarser crenulations, and absence of revolving carina limit- ing the "; Found "in the shales of the Hamilton group, at Hamburg, shore of
. Bulletin of the Buffalo Society of Natural Sciences. Natural history; Science. 279 fine concentric stri;e; band limited by linear carina on either side, the concentric stri;e making an abrnpt retral curve within. Found in the rieurodict3'um beds, chiefly as casts. Fleurotomaria itvs, var. tenuisjnra, Hall, differs in the greater number of volutions (sev^en or more); greater ro- tundity of the last two volutions; strong revolving stride, coarser crenulations, and absence of revolving carina limit- ing the "; Found "in the shales of the Hamilton group, at Hamburg, shore of Lake ;" ( Hall, type.) Plelkotomakia (Ai'iLLAiMA. Courad. (Fig. 2()*.>.) i Pal. N. Y., Vol. v., Pt. H., 1). 77. PI. XX.) Distill(xuishiiiii- Characters.— Tur- reted s])ire, with fom* or moi-e volu- tions, ra])idly increasing in size; ventricose body-whorl, an angular- ity on its upper side caused by two or three prominent revolving ca- rime; revolving and concentric sti'i;e. Found in the Strophalosia bed, on the Lake Shore (rare). PlEUIJOTOMARIA I'LAMDORSALIS. Hall. (Fig. 210.) (Pal. N. Y., Vol. Y., Pt. n., p. 82, PI. XXL) Distinguishiiig Characters. — De- pressed trochiform, sub-discoidal spire; sub-angular volutions, rounded below; aperture straight on upper side, somewhat rounded below; strong revolving carina, two-thirds distant from suture to peripheral band; similar carina on the lower side; simple band; ^;::;^^X\^S^^^^^^^'^ strong concentric Striie. obliterated (after Hall. Fig. 209. Pleitrotoiuaria cajiil- litn'a (after Hall).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Buffalo Society of Natural Sciences. Buffalo, N. Y. : Buffalo Society of Natural Sciences
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