PALAOZOIC. CONCHIFERA. CAMBRIAN AND SILURIAN. 
CAMBRIAN. LOWER SIL. UPPER SILURIAN. 
= Gis (eau alla ales o 
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SPECIES. AVaS 18] 1S] ol a}s| Sle lalS! BS . REFERENCES. 
SPS Slope la! Sislslolele £4 |3/ a 
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BISISISI4iA Slap EIEIF S|“) pla Ia 
AVICULID®. 
Pterinega............ Goldfuss, 1832 
Monopteria ... Meek § Wor- ASIPHONIDA. 
then, 1866 ,.. : 
— asperula ......... MEC OY) Ve sivcns cpl ae ella talk edlena lene wee[ P| P]...|..[eefecelec.| Avdewla, Brit. Pal. Foss. p.259, t.11, £.5; ib. Siluria, 4 ed. 
p. 228, Foss. 60, f. 4. 
— Boydii............ Conrad anrccces eal|leval soto eae bel lace lloedl soe ses[oce[ecelsse[eee{ x ]ese{oee| A@eeula, Jour. Acad. Phil. vol. viii, t.12, f. 4. Pterinza, 
M‘Coy, Brit. Pal. Foss. p. 259. 
— bullata LEO) Scocetoocon| feed sce face Ise 8 * Avicula, Synop. Sil. Foss. Irel. p. 23, t. 2, f. 13. 
— demissa (COMM AGE csacaeoselloaellooelloocttaod lee x * * Avicula, Jour. Acad, Phil. vol. viii, t. 13, f.3; ib. Hall, Pal. 
New York, t. 80, f. 2. Pterinwea, M‘Coy, Brit. Pal. Foss, 
4 p: 260, t. 11, £: 7. 
| — elongata ......... Gold fneeeetec sees oelhe dl ent eae alee ve vee[oee|ees[eee]..Jeee[ee-|...] Pet. Germ. t. 119, £.5; ib. M‘Coy, Synop. Sil. Foss. Irel. 
pseame 
| — fimbriata........, DCO. soonnoees rl eae teal Nae Mal ealces ince See IP P2l sei leeel| ect] eeel evel SYLOP: iSil. Koss, Irelly ps 205 tazsta 7. 
WANS ese eee MECOY sescisen. elke alemaltend eee tsaleaelleedd see Sralece lone] coal set | oe eee eee] eriteeball Mossinp. 2605, t.. 0415 f..0: 
— laminosa......... Gold fences en SAAS Nb ll ead ae pee eel (el be [2] P| ...[...]...]...]...| Pet. Germ. vol. ii, p.136, t.120, f.1; ib. M‘Coy, Foss. Irel. 
p. 21. 
=e LINOAEA ...0<cacveces (CHL h ee ax nepersertl eee lone tesalleec| Hell 2 all Pet. Germ, t. 119, f. 6; ib. M‘Coy, Brit. Pal. Foss. p. 261; 
ib. Synop. Sil. Foss. Ivel. p. 21. Av. lineata, Sow. Sil. Syst. 
t. 5, f.10. Pt. lineatula, D’Orb. Prod. p. 33, Etage us 
No. 106. 
— megaloba ...... WOW) renonctes eel [Ee loreal ee loc Be talib (eee eal oee| ese leec| eel ge! lend eeu| britedkal. Bosse ph 260, ita tel. t..19: 
ape) OLDICULATIS VenemeneOL Ooy/ ye trateres| net eealeesl es tues Pll Nee lone Avicula, Synop. Sil. Foss. Irel. p. 21, t. 2, f. 8. 
= THE Naay er SONS eA LICL sect alec nsellooel net feel leodllsecllood lone ¥ Avicula, Pterinwa, Synop. Sil. Foss. Irel. p. 22, t. 2, f. 9. 
? P, posidonieformis. 
— planulata ...... HOD RLD. srercrsl heel |eor| {coed | sad ec tasel lend lene xl *xlx| «| Ac. M. Sci. Phil. t. 13, f.15; Mem. Geol. Surv. vol. ii, 
pt.1, p. 368; Siluria, 4 ed. p. 228, Foss, 60, f. 6. 
— pleuroptera...,., Conrad ,........ Selle eat ke 8 lee eal eee secfecelece| ae [eee] a [eee].-.| Avéewla, Jour. Acad. Sci. Phil. vol. viii, t.13, f.2. Pterinza, 
M‘Coy, Brit. Pal. Foss. p. 261, t. 1 I, f. 1, 2. 
— posidonieformis ‘Coy ......... sca eal eral ee Hie eelltee dl ea ead cella leca|eccllecaleeellsealeccl ISyOp. Sil. Hoss: Ireland, p: 22, t.2; £.10. 
Sil. Syst. t. 3, f. 2; ib. Siluria, 4 ed. t. 34, f. 4. ? Var. of 
P. retroflexa. 
Mytilus, Wahl. Upsal. <Avicula, His. Leth. Suec. t.17, f. 12: 
ib. Sil. Syst. t.5, f.9; var. a, ? Avieula naviformis, Conrad, 
Jour. Acad. Phil. vol. viii, t.12, f.11; var. 8, A. erecta, 
id. ib. t.12, f.5. Av. subretroflexa, D’Orb. Prod. vol. i, 
p. 33. Pterinza retroflexa, M‘Coy, Brit. Pal. Foss. p. 262. 
Pt. squamosa, M‘Coy, Synop. Sil. Foss. Irel. p. 22, t. 2, 
f.11. P. retroflexa, Siluria, 4 ed. t. 9, f. 26; t. 23, £.17. 
— rectangularis ... Sow. 
— retroflexa ...,.. Walaa. sccess ieee coal lets 
| — reticulata ...... SEA O. éapponencs saallawalesclleareflecshess Vide Pterinwa Sowerbyi. 
Brit. Pal. Foss. p. 263. <Avicula reticulata, Sow. Sil. Syst. 
t. 6, f. 3 (non Hisinger, non Goldf.). P Avicula, Geinitz, 
Verst. Grauw. p, 49, t.19, f.17,18. Pterinwa, Siluria, 
4ed. t. 23, f. 15. 
— Sowerbyi 
Vide P. retroflexa. 
Avicula, Jour, Acad. Philad. vol. viii, t.13, f. 4. Pterinea, 
M‘Coy, Brit. Pal. Foss. p. 263, t.1 I, f. 3. 
Synop. Sil. Foss. Irel. p. 23, t. 2, f. 12. 
Brit. Pal. Foss. p. 263, t.1 1, f.4; ib. Siluria, 4 ed. p. 228, 
Foss. 60, f. 5. 
— squamosa ,..... M ‘Coy 
— subfaleata ....., Conrad 
— sublevis ......... M ‘Coy 
— tenuistriata...... WME COU) Weave ces ss veclleesl lee] (nog ee 5 oAlfowa| coed hes caf ake || oro fel ne eed I etl ater 
100 
