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il  ' 14 (.'aZrz`n Guodriclr `
I t? », . I
  l   » G011z`oZ2a.s1`s Z.’}l[(*I'l‘(’7lI·C}ZS Lczr V
    G02z,:'0/irzsis inlcrrcnicns Lua, Proc. Acad. Nut. Sci. l?hil:1., XIV, 186; ,t_ l
 é, It 268, Journ. itcutl. Fat. Nui, Philo., V, 1863, p. 320, pl. 38, {ig. 1tF.~; `
fi  ig ’ Obs. Gon. Unio, IX, 1863, p. 142, pl. 38, fig, 169; Tryon, SlIllill¤¤—!l_—
3,;;; _` Misc. Coll., No. 253, 1873, p. 170; Hinkley, Xzuutilus, XX, 1906, p. it ;
 .. lt " Goninbasis amouza Lczi, Proc. Acad. Nut. Sci. Phila., XIV, 1862, p_ xw; .
{  l l _   Journ. An-aid. Nut. Sci, Philu., V, 1862, p. 323, pl. 38, fig. 17.3, Ml., ,
    _ Y;'-Qi Gon. `Unio, IX, 1863, p. 145, pl, 38, fig. 175, Tryon, Siuithson. Mi .—·, , · ,
* 7 .1;, ` -,f, Coll., No. 253, 1873, p. 169.  ·
, » {§ .- GOlli0l)(lSiS cozifivzrzis Lon, Proc. Acad. Nut. Sci. Philo., XIV, 1862. x, 7
i   dl; 268, Jonrn, Acnd. Nut. Sci. Philn., V, 1862, p. 321, pl, 38, fig; ii ; ` l
  li U Obs. Gen. Unio, IX, 1863, p. 146, pl. 38, {ig. 170; Tryon, Sinith~ y _ l
  ,7  ‘ Misc. (‘oll., No. 253, 1873, p. 188. I
{     (i¤>11t0ba.s·is prolottzrfa Lon, Proc. rkcud. Xnt. Sci. Phila., XIV, 1862;,. · ,
[   ._ 268, Journ. Acad. Nut. Sci. I’ll1l{l., 1., 1862, p. 326, pl. 38, tig. l..; r.
      Obs. Gcn. Unio, IX, 1863, p. 147, pl. 38, fig. 177. , "
,   .   .·lmZ»Z0.r2z.s rirg/l'11i<·us (Gniclin), Hannibal, Proc. Mol. Soc., X, 1912, p. VT  ‘, ,
{   I ,   'l`h<· outstzuiding· clizwuotcristio of this spccics is thc ~»·— t  ..
{   ` Q, currcncc ot stout, longitudinal tolds which nrc ruthcr wid»·ly Q 1‘
    ,,__: spziccd and tcnd to US}'ll('lI1'Ol1lZ(‘,n that is, thc folds of tw  , I
{   {Q whorl frcqucntly touch thosc of unothcr, giving thc ciolicct ·»i' .  
.     an nczirly straiglit, continuous raiscd lino from spirc to l¤·>»ljv , S.
,   . _' whorl. V, t·
,  ·`   A typical spcciincn is C2l1'l112lI@, striutc and plicuto upon il ~   1.
l     spirc. Tho czirinzic nrc at tho pcriplicry; thc striuc, wl ~·n  I
g     prcscnt, arc at thc top of thc whorl and arc scldoin in ltr  ‘ ,·,
V     than two in nuinbcr. Thc plicuc are prominent and      ; tt
  ·   thc wholc uppcr half of thc whorl. Thcy nrc not ?ll\\"·_`·'>  2, j.
, I']? _;,‘_ prcscnt hclow thc spirc. Thc whorls, as u rulc, arc tlut zll»~·=‘··  Q tl
      lll? ll¤‘l'll)lll*i'}' 011 l`l1C lO\\`01‘ \\‘l1<>rls and the periphery jtshl: {~   ,,,
l ‘g ,   bluntly:»1ng·lcd. '1`hc coluincllzi is white-, dclicutc, and roun·l ·~l1   m
  ,     Tl1<· aipcrturo ovzito to rhoinboidnl and produccd at thc ll: ~>·Z 7  J,.
8     thc outcr lip slightly incurvcd just bclow thc suturo. -\l~ ui?  
Z", ti, 25 por cont. of thc shclls cxuinincd oro handed, thosc <·~=l`>"   lr
    .i.. bonds \`2ll'}'lllg` from ono at thc top of thc wliorl to I —‘ ‘- i  ht
, l l,   in which cusc two occur uhovc thc ccntcr, one at thc t···l¤‘~l’ ij  ns
l y  .   sind two hclow it. In thc opcrculuni thc spirul linos arc lli‘"·  , in
    " ~   Clo:u·»cnt. und not vcry openly coilcd. '1`hwy nrc conliiiwé `*‘   ··l`
,   Z   thc lowcr loft iuargin. °  l·l
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