INDEX. 50D 
carinata [Acrotreta], (Segerberg MS.) Moberg and Dicellomus nanus (Meek and Hayden)............- LIII: 1, la-l; 2, 2a, 
Seperberg: ents cscscensscss oom tocincscse Text figs. 56A-D, 3, 3a-d. 
p. 680. Danvusi Walcott, steesessesncenseeasscsaeeee LXXXIX:11,lla-d. 
cedens [Lingulella], (Barrande)................--..- XXX: 8. pectenoides (Whitfield)....................-. LIT: 6, 6a-c; 
celatus [Obolus (Schmidtia)], (Volborth)........... XIV: 1, la-c. Text figs. 48A-B, 
ceratopygarum [Acrothele], (Brogger)...............L-XIII: 1, la-c. p. 575. 
chinensis [Obolus], (Walcott).......... -- XX XIX: 7, 7a-b. pats | (Hall) coma. cae secs eee eee eee LII: 1, la-k; 2, 2a-i; 
christianiz [Eoorthis], (Kjerulf)...................- XCV: 1, la-h. 3; 4, 4a; 5, 5a-b; 
chromatica [Obolella], Billings...............2.....- LIV: 1, la-i. Text figs. 16A-B, 
chuarensis [Obolus (Westonia)], (Walcott). . -XXV: 2, 2a-e. p. 314, and 49A-B, 
cingulata [Kutorgina], (Billings) .......... --V: 1, 1a-s; p. 576. 
Text figs. 3 and 8, prolificus Walcott ............-..-2...22...-- LXXXIX:10,10a-b. 
p. 299,and 50A-C, SDHUNCt AV alCOLbes sss ce eee eee eee eee LII: 7, 7a. 
p. 581. dichotoma [ Acrothele], Walcott LX: 2. 
circe [Quebecia], (Billings)...............-.--..-.-- CIV: 7, 7a-g. Discinolepis granulata Waagen.. LXXXI: 3,3a-b. 
circularis [Acrotreta], Moberg and Segerberg........ Text figs. 57A-C, | Discinopsis gulielmi (Matthew)...-........-....-.. LXXXII: 5, 5a-c. 
Pp. 680. MSUICAEUISIV alCOLts --- sae eeneee ees ame e eee LXXXII: 6. 
clarkei [Lingulella), Walcott..............-.----..- Text figs. 42A-D, | discoideus [Obolus], (Halland Whitfield)..........XVIII: 6, 6a-d. 
p. 486. dolatus [Obolus], (Sardeson) .............-...---.- Text figs. 35A-B, 
Clarkella montanensis (Walcott) ...........-..---.- CIV: 2; 2a-d. p- 390. 
clarki [Dearbornia], Walcott...-..........----....-UX XXII: 7, 7a-d. doris [Eoorthis], (Walcott) ..................--.--- XCVII: 13, 13a. 
claytoni [Acrotreta)], Walcott.........-.......:.--. LXXIV: 3, 3a-b. dubia [Lingulella], (Walcott) ...................... XXIV: 4, 4a. 
colleni [Acrothele], Walcott.......................- LXIII: 6, 6a-b; dubia [Siphonotreta], Walcott ........-..... ---LXXXI; 7, 7a-b. 
Text figs. 55A-E, p. | dugaldensis [Protorthis (Loperia)], Walcott. -XCIX: 5, 5a-j. 
: 641. edsoni [Rustella], Walcott .................. ---I: 1,la-e. 
collicia [Lingulella], (Matthew)-.............-..-..- XXXV: 1, la-f; 2, | eggegrundensis [Acrotreta], Wiman...............- LXX: 2a-d. 
: 2a-d. eichwaldi [ Obolus], Mickwitz Not figured. 
coloradoensis [Billingsella], (Shumard)............. LXXXV: 1, la-z; elegans [Obolus], Mickwitz ..............--.------- XV: 3. 
Text figs. 5, p. 299, | elegantula [Curticia], Walcott ..........-.........- I: 2, 2a-1. 
and 66, p. 751. elegantula [ Eostrophomena], (Walcott).........-.- XCV: 6, 6a-b. 
columbiana [Philhedra], (Walcott).............-... LXXXI: 10. Elkania ambigua (Walcott) LI: 2, 2a-c. 
XII: 3, 3a; 8, Sa. 
--XOVII: 14. 
LXXVII: 1, la-b. 
complexus [Obolus], Barrande.......... 
compta [Nisusia], (Tate).............----- 
concentrica [Acrotreta], Walcott 
concinna [Lingulella], Matthew....................X XXIII: 2, 2a-h; 
XXXIV: 1, la-r. 
contraria [Orbiculoidea], (Barrande)............... LXXXI: 9. 
conula [Acrotreta], Walcott............-..---....- LXXV: 2, 2a-b. 
convexa [Acrotreta], Walcott 
convexa [Lingulella winona], (Walcott)... 
coriacea [Acrothele], Linnarsson............ 
LXVI: 6, 6a-c. 
--- XVIII: 4, 4a-d. 
.- LVI: 1, la-i. 
corrugata [Finkelnburgia osceola], (Walcott). ...... Not figured. 
costata [Acrothele prima], (Matthew).............- LXI: 4, 4a-d. 
crassa) [Obolella];\(Hall) see 0 22220 2 eo LIV: 2, 2a-n; 
Text fig. 14, p. 299. 
crassa elongata [Obolella], Walcott..............-.. LV: 5, 5a. 
crassus [Obolus (Schmidtia)], Mickwitz............XIV: 4, 4a-d. 
crenistria [Micromitra (Paterina)], (Walcott) ....... III: 4, 4a-b. 
cuneola [Lingulella], (Whitfield).............. XXVIII: 7, 7a-b. 
Curticia elegantula Walcott.....................--- I: 2, 2a-1. 
curvata [Acrotreta], Walcott............-..-......- LXVIII: 1, 1a-n. 
cyane [Obolus], (Billings)...................22-..2. XXVIII: 4, 4a-b. 
Dalmanella multisecta (Meek) 
parva (de Verneuil)............... 
-.-Text fig. 9, p. 299. 
- Text fig. 10, p. 299. 
subequatal (Conrad) s2es2 cesses se-ceec ee 2 Text fig. 2, p. 299. 
damesi [Lingulella], (Walcott) .............--.--.-. XXXIX: 8, 8a-c. 
dartoni [Obolus (Westonia)], Walcott............-. Text figs. 40A-C, 
p. 455. 
daunus [Eoorthis], (Walcott)........-........--..- XCV: 2, 2a-c. 
davidsoni [Lingulella], (Barrande).................X XXII: 1, la-e. 
davisi [Lingulella], (McCoy)........-...-...---.-.. SOXEX: 2, 2a; 
XXXI: 6, 6a-h. 
Dearbornia clarki Walcott............-...-----.--- LXXXII: 7, 7a-d. 
decipiens [Acrothele], Walcott..................--- LVIII: 3, 3a-d. 
decipiens [Obolus meconnelli], Walcott... -X XIII: 4, 4a-b. 
definita [Acrotreta], Walcott............-...--..--- LXIV: 2, 2a-g; 3, 
3a-b. 
Delgadella lusitanica (Delgado).........-..-------- XXIX: 5, 5a-b. 
delgadoi [Lingulella], Walcott...........-...--..--- XXIX: 6, 6a-c. 
depressa [Acrotreta], (Walcott) .........-- 
descendens [Acrotreta ophirensis], Walcott. - 
XLVI: 8, 8a-c. 
--LXXVIII: 1, 1la-c. 
desiderata [Elkania], (Billings)..........-- -LI: 1, la-d. 
desiderata [Lingulella], (Walcott)..............-..- XX: 4, 4a-c; 5, 5a-j. 
desmopleura [Eoorthis], (Meek)....................XCVI: 1, la-r. 
desmopleura nympha [Eoorthis], Walcott. XCVI: 2. 
diablo [Eoorthis?], (Walcott) .............---.-----X CII: 3. 
dice [Billingsella], WIG Es cas Gane aacRBaaoanGaedane CI: 8, 8a-d. 
Dicellomus appalachia Walcott.............-..-.-- LIII: 4, 4a-g. 
desiderata (Billings) . LI: 1, 1a-d. 
day (Billings) |<< c seem seee eee ee XXX: 20, 20a; 
LI: 4, 4a-c. 
ella [Obolus (Westonia)], (Halland Whitfield) .....X XXIII: 3,3a-c; 
XLVII: 1, 1a-p. 
ella onaquiensis [Obolus (Westonia)], Walcott.....X LIX: 6, 6a. 
ellsi [Lingulella], (Walcott) ............-.:......-- XIX: 3,3a-c. 
elongata [Obolella crassa], Walcott ...............- LV: 5, 5a. 
elongatus [Obolus (Westonia)], Walcott .........-. LXIII; 8,8a-d. 
emmonsi [Acrotreta], Walcott ..........-....... .-- LXV: 6. 
endlichi [Micromitra sculptilis], Walcott..........- Text fig. 22, p. 342, 
Eoorthis agreste (Walcott)....-....-..-.. BatacSssae LXXXIX: 6, 6a. 
atavay (Matthew) = o2-cssceeneemscoesnee anes XCV: 7, 7a-b. 
bavarica (Barrande) . Bee cise = aE OAL a a 
christianize (Kjerulf) . 
daunus (Walcott)...... 
Sea Se XCV: 1, la-h. 
pabinsocacoccaGeces AONB ero Ee 
desmopleura (Meek)-..........-.------------ CVI: 1, la-r, 
desmopleura nympha (Walcott)..............XCVI: 2. 
*diablo|@Walcott) oc. 2es- sess 2-- 2 ase se OlMngs 
‘doris|@Wialcott) =e eesmeee heen e eee eee XCVII: 13, 13a. 
Gaaoanecesceca XCIV: 3,3a-c. 
iddingsi (Walcott)... -XCI: 3,3a-b. 
indianola (Walcott) -.- -XCIV: 1t, 2, 2a-h. 
johannensis (Matthew). ....................-XCVII: 10, 10a. 
kayseri (Walcott)................----..----..- XCVII: 6,6a-b. | 
kichouensis (Walcott)...........-.----------- LXXXIX: 5. 
hastingsensis (Walcott) 
linnarssoni(@kaysen)maaaceeeeeeseeocisen eee XCVII: 5, 5a. Zi 
Mew berrysaWialcOthsse see -ema ean eiee eae Text figs. 69A-D, 
p. 783. 
newtonensis (Weller).........---------------- XCVII: 9, 9a. 
pagoda (Walcott)... 
papias (Walcott) 
primordialis (de Verneuil and Barrande) ..... XCVII: 1, la-d. 
remnicha) @Wanchell) sei asceeneese eee eee XCI: 1, la-s; 
XCII: 2, 2a-d; 3, 
3a-e; 
Text fig. 7, p. 299. 
remnicha sulcata (Walcott)...-.......-..-.--XCII: 1, la-c. 
remnicha texana (Walcott)............-.----- XCII: 4, 4a-g. 
remnicha winfieldensis (Walcott)........---- XCI: 2, 2a-e. 
Saltensis| (KAYSCL) sane sence eee semen cee ae CALL lL 
tatei (Etheridge). SSO RSE SHE Se SHOE. CONAN Baby sbi 
thy onewwalcotttecss scores aaseeeee eens Text figs. 70A-C, 
p. 789. 
full bereil Walcott) seep areas KCV: 3. 
‘wichitaensis|(Wialeott)<-.- 2-22-2222. 22-- XCIV: 1,1a-o,1u. 
wichitaensis leviusculus (Walcott)........... XCIV: Ip-s. 
