TABLE OF SPECIES. 
Rocxs & Groups. 
SO] GPa] &] &] =| Sy 
SIPIS|Sialeleje 
BN QUIN HCL |i |i os 
81 s(<|elT1Sla/9 
BlelelolZySlsiz 
GENERA AND SPECIES. Plate and figure. | Page. |#|=|5/ — g FF |S: 
=] n|s i 
Alg/Slsieie| | 
42i5)5/2/3\4 Iq 
S1FP/SI1SiS] Is 
ers) /P8)"| is 
@ ® 
9 Atrypa bisulcata, Hmmons....... ...| Xxxlll, 3a-e 139 colesfeslee|pleoles 
10 — deflecta, ETO Uieveiore ofe\nlofa\s Xxxlll, 4a,) 140 --(+4.. 
11 — recurvirostra, ‘¢ sferateretelete xxxul, 5a-—d 140 }..J}..]..fee]e.|fyee 
12 — exigua, GG Biccislefeie MASK 54 \On@ x00 141 e|fleeles 
13 = modesta, Say..... ayelerevelaterate!| (MA RCR UIT ple) 141 J..J}.. [ee feote. el 
14 — circulus, Aan Bienes) EM a= c 142 we lHl. eee 
15 _— ambigua, <6 eeeceeee| XXXI1,S a@—c, 9a )} 143 Joel. .fee|e-]--/+]-.]-- 
16 —_— hemiplicata, << soiree os, 10a =f 144 Joe}asfoelecfee|teelee 
17 — SIs VIELCEA Telivte sisis/e Pesleienieceele PRX XIN, ll a — 145 feels a feelee|e. [tye "fe. 
18 — subtrigonalis, Hall ........|  Xxxill, 12a-c 145 Jools efeeleefee|ty oc}. 
: Xxxill, 13 a4- HPA Gesell BAI ote) |lexel| ete)| eve Bs\are 
19 —_— increbescens,* ‘¢ ot and ieses, 6 oi Soot sen Walesa ee cole 
2 — dentata, ag siete evista XXIII: LAG — 6 148 [ee|-- Je |flee]es 
Q1 — sordida, Ge Sle cee EXITS, 16) 148 forlee|eefor|e+|teelee 
ACEPHALA. 
1 Ambonychia mytiloides, Hall .....| xxxili*, 2 B15 Jee]e-[yee|e- fee fer]ee 
2 —_— bellastriata, SC Souobal BSS shy, chinese 163 |-.|..|es[e*]--[H]e- 
3 — orbicularis, Conrad .......| XXxXVi, 5a-d 164 |e 5 i 
4 — amyydalina, Hall ..........| XXXVl, 6a-c¢ 165 |e eee}. .|-H]. 
5} — undata, Conrad....o+.eese.| XXXVI, 74,6 165 |erfeslec|eefeeityeejes 
6 — ObtUSasZELQIL) sietcierg.s cicist tev ereve||  RXKVI,.0.8) 05.0 167. |--|ee}e-fee|ee [tHe 
7 al IS DM OITL CLA sel etejevaleereieiae. efele XXXVi, 9a,b 167. Jecleeleeler|- > |fyeel-- 
8 — Ladiatas HAIL decisive eves! LEXX,, A.g.—m 292 |eelecJeelee|ee |e |e - |b 
9 —  carinata, Goldfuss......... lxxx, 5a,)b 294 oo oe 
1 Avicula trentonensis, Conrad ....+. XXXVI, Qa=od U6ie |Palk cle. leslee lela. 
i= WellinticawHalls < csc tede tel EXExVI, 0 3 G2). |Ioollee| albolloplmeiaelee 
3 = insueta, Conrad ........-..| 1xxx, la,b DO Teds elt, «|losll pelleoletelieee 
4 = demissa, Syaineerete tebe retsl | eMal KK. 8 Oke Gy 999) Wealea eee lee |e. ae 
5 —? desquamata, Hall..........| Ixxx, 34,5 QQ foslecteclecr|.cfe-|. eit 
1 Modiolopsis mytiloides, Hall... .... SXXV (6 Laud P57 WSaileecc letel| ellate|eiell sie 
2 — parallela, Conrad...... mite XXKV5) oD. 158) er Slod|bolambpllor 
3 by faba é eae 6a-d 158. we te aalatele else 
5 wcrc eccne Ixxxii, 4 298 Bnllaa lied Slee 
3 XKRVS, = Ai 159 Jee . oe celes 
4 —_ nasutus, f Sfeisiere Sa biel 2 Bc | et ne Lg Di Pa PC 
5 — © arcuatus, Hall..........| xxxv, 8 159 |o+|..Jee|e-lee[+]..]-- 
6 —  subspatulatus, “ CAs eXXKV 9) 05D 159 |.-[eoferfoe|..[floele- 
7 —_— latus, « siotelesevele|| eX) LOG. B 160. |eefecleefee|.. |e. 
8  —  carinatus, GNERS Bhascll B&ssy Ihc oe 160 ]--|.-Je+]-+|--|+]--}+- 
9 _— aviculoides, “ Sod0 so) esSalg lay 161° |= |ee les}. ofesl—Ele. |e. 
10 _— trentonensis, Conrad ......| xxxiv, 10 161 Joelee|e-|e-leoltl. lee 
1L — modiolaris, «6 eve poof  Uxxxi, 13 Ixxxii,1 | 294 |-'] -|--f--|ee[ee|e eft 
12), — «truncatus, Mall o.%.0 sae | ~ bexxi, . 3 a, 296 ferfealerfer|ee|e.leefb 
13 _— curta, Conrad ...+. seeee.| Ixxxi, 4; Ixxxii, 2 | 297 |eefeefeefeefe-|ee[e | 
14 — sp. indet.. ..... pemuea ‘Ixxxi, 5a, 6 DODO Melee le eee (ua fea lets 
es —_ terminalis, Hall.... ..... Xxx", 5 eet 
15 _— anodontoides, Conrad ......| Ixxxii, 3a-¢ 298 Jorfeelor|e-]eefectee |b 
16 —?  nuculiformis, Hall.........| Ixxxil, 50,6 293 |ee]erfecferferleetee{ 
1 Modiola? obtusa, © Fou Gaal Pe-sre es 40 Jee}ee|es|tlealec|eelee 
1 Tellinomya nasuta, Hall. .ie0s+| .XXxiv, 3a-c¢ 152 feeferfer|es ||]. 
2 _ sanguinolaroidea, ‘* ......| xxxiv, 4 a,b 152 fer|re|ee|ee|ee| tee 
3 _ gibbosa, SCAM roteieletese XLV, hes, D 153 Jeetee|ee[ee tes [tyeefe- 
* Compare 4. capax, Conran, Jour. Acad. Nat. Sciences, Vol. viii, pag. 264, pl. 14, fig. 21. 
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