458 



Genus GHIOIIE I.legerle von LItllilfeld. 

 Subgenus Oliione 'i'. ?. 

 Section Ohione s.s. 



OHIO::^ 3A^KIi:3I n. s;-). 



Venus ".7oodv;arrli Guppy, 1866, Quart. Jour. Geol. See. London, vol. 



Venus V/oodv/'ardi 5uppy, 1874, 3-eol. i-^ag., dee , vol. 1, p. 



442 ( check list) 67- parte, 

 "ot Venus V/ood^vardi '^ur)p;- , 187g, luart. Jour. Geol. 3oc. London, 



vol. ?;2, p. 550 (= a. gu.ppyana Qabb, 1875 K 



Chi one Voodwardi f'^^up^y) Dall, 190?^ Trans . :'r ?ree Inst. 



3ci., Philadelphia, vol. 5, pt. :, . ^ '^^1-1292, 



( ey parte) . 



Descriptio n.- Shell of :i\c ^'^ ' -'''■'. sizu, ^(^'. triangular, 



moderately" ineciuilsteral, well inflated; produced and broadly 

 ro^■lnded anteriorly, lor/er portion of poster i '-in oblicuely 



tr\jnc' ted; lurnile crossed by imec[uallLy developed lamellar contin- 

 uations of the conceiitrie ribs; escutcheon relati'ely narrar, 

 striated, boi^ndc-S by a rounded carina, on the left vslve the mar- 

 l,lu adjacent to the "" ' '""ix-l tv:o- 



thirds of its length; a short distance from this carina a sec- 



