INDEX. 361 
plicatella [Billingsella}], Walcott.............----.-- LXXXVI: 3, 3a-n; | rotunda [Lingulella], (Matthew).......-....-.-----.- XX XVII: 3h-k. 
Text fig. 1, p. 299. rotundata [Syntrophia], Walcott........----------- CIII: 4, 4a-e 
plicatella [Plectorthis], (Hall)......-..---...+.--+++- XCVI: 4, 4a; rotundatus [Obolus], (Walcott).. See nena aes epee e 
Text fig. 12, p. 299. rowei [Lingulella (Lingulepis)], (Walcott)..........X-XI: 4,4a-b. 
pogonipensis [Lingulella], (Walcott)..........-..---XX: 3, 3a-c. rudis [Acrotreta], Walcott LXV: 3f; 
politus [Dicellomus], (Hall)................-+.----- LIl: 1, la-k; 2, 2a-i; LXXV:1. 
3; 4, 4a; 5, 5a-b; rugatus [Obolus (Acritis?)], Walcott...............-XIII: 2 and 3. 
Text figs. 16A-B, | rugosa [Acrotreta ophirensis], Walcott... LXXIV: 2, 2a-e. 
p- 314,and 49A-B, | rugosa [Schizopholis], Waagen......... Basses I: 4e; é 
p. 576. LXXXI: 1,1la-c. 
pretiosa [Acrothele], (Billings).............--------- LVIII: 1, 1a-g. rugosicostata [Billingsella exporrecta], Walcott.-..- LXXXVIII: 2,2a-c. 
pretiosa [Mickwitzia], Walcott 
prima [Acrothele], (Matthew) LXI: 6, 6a-b; 
LXII; 2. 
prima [Acrothyra signata], Matthew.............--- LXXX: 2, 2a-b. 
prima [Lingulella], (Conrad MS.) (Hall).........--- X XVII: 1, la-e. 
prima costata [Acrothele], (Matthew)...........-.--L XT: 4, 4a-d. 
primeeva [Acrothele], (de Verneuil and Barrande).. LVI: 6. 
primeva [Acrotreta], Walcott ..............-- LXIX: 1, 1la-f. 
primeva [Lingulella ?], Hicks .............-------..-X-X-XTI: 5, 5a. 
primordialis [Eoorthis}, (de Verneuiland Barrande).XOVII: 1, la-d. 
primordialis [Syntrophia], (Whitfield).....-....---- CII: 2, 2a-e. 
primordialis argia [Syntrophia], Walcott... -CIl: 3. 
prindlei [Obolus], (Walcott).........-...-..----.-..X XVII: 3, 3a-e. 
priscus [Schizambon], Matthew. ......--..--------- LXXXIV: 2; 2a-e. 
pristinus [Trematobolus], (Matthew)..-...---------- LX < XIII: 2, 2a-h; 
: 6. 
proavia [Acrothyra], (Matthew)-......--.---.------ F 
LXXVI: 3, 3a-u. 
proles {[Acrothele], Matthew......-. LXII: 3, 3a-e; 4, 4a. 
prolificus [Dicellomus], Walcott LXXXTIX:10,10a-b. 
prospectensis [Micromitra (Paterina)], (Walcott). ..II: 4, 4a. 
Protorthis billingsi (Hartt).............--...--.----XCIX: 1, la-g. 
helena Walcott. «-+----XCIX: 4, 4a-b. 
? hunnebergensis Walcott. . See ese eee OMetos Of>Cs 
levis Walcott. So ceieeeees ne eeeeok ClN7/16,;08-Ds 
latourensis (Matthew) ..-XCIX: 3, 3a-d. 
quacoensis (Matthew) XCIX: 2, 2a-e. 
wingi Walcott..-...-. XCIII: 5, 5a-c. 
sp. undt. Walcott Not figured. 
Protorthis (Loperia) dugaldensis Walcott......---- XCIX: 5, 5a-j. 
pulchra [Botsfordia], (Matthew)......----.-.------- LXII: 5, 5a-l. 
pumila [Lingulella (Lingulepis)], (Matthew) -....-- XLV: 3, 3a. 
pumpellyi [Billingsella], Walcott.........-------...-XCVII: 8, 8a-c. 
punctata [Lingulella], (Walcott)...........---------XX: 6, 6a. 
pusilla [Micromitra], (Linnarsson)...-...-..---.---- III: 2, 2a-c. 
puteis [Acrothele avia], Matthew ...-.-...---.----- Not figured. 
pygmiea [Lingulella (Lingulepis)], (Salter)..-......- XXX: 10. 
pyxidicula [Acrotreta], White..........-..--------- LXIX: 2, 2a-f; 3, 
3a-f. 
quacoensis [Protorthis], (Matthew)......---- 
quadrilateralis [Lingulella], (Walcott) 
quadrilineata [Acrothele], Pompeckj....-..--.----- 
Quebecia circe (Billings) ..-.-.-.---------+---------- } 
quenstedti [Obolus apollinis], (Mickwitz) .........- Text figs. 34A-B, 
p- 374. 
radula [Lingulella], Matthew .........-.-.--------- XLV; 1, la-1. 
randomensis [Lingulella], (Walcott) -. 
rara | Acrothele], (Walcott) 
rara[Nisusia], Walcott......-.....-------- 
XEXT; 5, 5a: 
.-LXIIT: 4, 4a. 
.- Text fig. 60, p. 730. 
recurva[Volborthia], (Kutorga) ........------------ T: 6, 6a-e; 
Text figs. 33A-B, 
p. 366. 
(Redlichella) granulata [Acrothele], (Linnarsson)...L VI: 2, 2a—n. 
refulgens [Obolus], Matthew-..........--.----------- IX: 2, 2a-d.. 
remnicha [Eoorthis], (N. H. Winchell)............-XCI: 1, la-s; 
XCII: 2, 2a-d; 3, 
3a-e; 
Text fig. 7, p. 299. 
remnicha suleata [Eoorthis], (Walcott) ....---.----- XCII: 1, 1a-c. 
remnicha texana [Eoorthis], (Walcott) ..-..- 
remnicha winfieldensis [Eoorthis], (Walcott) -- 
.-XCII: 4, 4a-g. 
XCI: 2,2a-e. 
retroflexa [ Billingsella], (Matthew) ..........--.---- XC: 1,la-h. 
rhea [|Obolus], Walcott...........-..--.---.-.----=- LX:) 1, 1a-c. 
tichthofeni [Billingsella], Walcott -- LUXXXIX: 1. 
roberti[Lingulella (Lingulepis)], (Matthew) .......X XX VII: 4, 4a-d. 
robusta[Lingulella (Lingulepis) gregwa], (Matthew). Not figured. 
rogersi[Obolus (Westonia)], (Walcott) ...-.-...----- XLII: 2, 2a-d. 
rokitzanensis[Obolus ?], Barrande........---------- XII: 6 
romingeri[Billingsella], (Barrande).............-..- XC: 2,2a-n. 
Rustella edsoni Walcott............---.-.---------- I: 1, 1a-e. 
? major (Matthew) . Text fig. 19, p. 328. 
sabrinse [Acrotreta], (Callaway) ....--.------------- LX XIII: 5, pa 
saffordi [Wimanella], (Walcott) .........----------- LXXXVII: 7 
sagittalis [Acrotreta], (Salter)............----------- LXXI: 2, aes ‘3 
3a-j. 
efssagittalis!pAcrotretal:-.----s--ss--erse= sine === = Not figured. 
sagittalis magna [Acrotreta], (Matthew) . 
sagittalis taconica [Acrotreta], (Walcott) 
sagittalis transversa [Acrotreta], (Hartt) 
--LXVI: 4, 4a-f. 
.-LXXI: 1, la-o. 
.-L XXII: 1, la-k. 
salemensis [ Billingsella], (Walcott) ..-...-..-------- LXXXVII:3, 3a. 
saltensis [Eoorthis], (Kayser).....-.--.------------- XCVII: 11. 
salteri [Obolus (Bréggeria)], (Holl).......---------- XIII: 1, la-n; 
XV: 4, 4a-d. 
sandbergi [Otusia], (N. HM. Winchell).......-.-...-- SCN 4, 4a-d. 
sardiniaensis [Kutorgina], Walcott. . : 4,4a-c. 
Schizambon? esthonia Walcott.........------------ LXXXIV: 4. 
manitouensis Walcott. .- LXXXIV: 3, 3a-e. 
priscus Matthew... .--- <2 2-22 ese. eee nn wine = LXXXIV: 2, 2a-e. 
typicalisaWialcott.-.seesseeetee sea saa LXXXIV: 1,1a-d. 
Schizopholis rugosa Waagen.....---.--------------- T: 4¢; 
LXXXI: 1, la-c. 
LXX: 1, 1a-s. 
~- XM: 19, 19a-e. 
schmalenseei [Acrotreta], Walcott 
schmalenseei [Obolus], (Walcott)......--------- 
schmidti [Obolus], Mickwitz........--.-----.------ XV: lla-c. 
(Schmidtia) acuminatus [Obolus], Mickwitz ....--- XIV: 2,2a-c. 
celatus [Obolus], (Volborth) XIV: 1, la-c. 
crassus [Obolus], Mickwitz.....---.---------- XIV: 4, 4a-d. 
obtusus [Obolus], Mickwitz........-.--------XIV: 3,3a-c. 
schucherti [Lingulella], (Walcott) ....-- -X XI: 6. 
Schuchertina cambria Walcott. -....-- -LI: 6, 6a-m. 
scotica [Micromitra], Walcott..........--.---------- Text figs. 21A-C, 
p. 340. 
sculptilis [Micromitra], (Meek)...---...------------ III: 5, 5a-e 
sculptilis endlichi [Micromitra], Walcott. 
seebachi [Acrotreta], Walcott.--.--...--------- 
--- Text fig. 22, p. 342. 
--LXXVII: 3, 3a. 
selwyni [Obolus], (Matthew)........--.------------ XXXVI: 1, la-h; 2, 
2a-b; 
XXXVII: 1, la-f. 
septalis [Obolus], (Walcott)....--.-..------------- XXXIV: 2, 2a; 
XNIII: 3d. 
sequens [Lingulella (Lingulepis) acuminata], Wal- 
(ilinesoascoc soteacobecdnSeneasoscegcads Text figs. 46A-B, 
p. dal. 
sera [Acrothyra], (Matthew)..-..----------+-------- LXXX: 4, 4a-c; 5, 
5a-d; 6, 6a-i; 7, 
7a-b; 8?. 
shansiensis [Obolus], Walcott -.-.....-------------- XI: 7, 7a-c. 
shantungensis [Acrotreta], Walcott......----------- LXIX: 5, 5a-e 
shelbyensis [Wimanella], Walcott. .-.-------------- II: 9, 9a. 
siemiradzkii [Lingulella], (Walcott) ..-...--------- EXSXEXGI 22a: 
signalis [Acrotreta], Walcott........-.-------------- LXIX: 4. 
signata [Acrothyra], Matthew’ ......--------------- LXXX: 1, la-d 
signata [Lingulella], (Barrande)......------------- e.0.0; Gauls 
signata orta [Acrothyra], Matthew-.......---------- LXXX: 3, 3a-b. 
signata prima [Acrothyra], Matthew-.--..-- -LXXX: 2, 2a-b. 
siluricus [Obolus (Mickwitzella)], (Eichw: =). XV: 1, la-c. 
similis [Lingulella], (Walcott)-.........-------------4 X XI: 2, 2a-j;3,3a-d. 
simplex [Lingulella ?], (Barrande).-....-------------X XXII: 4, 4a-b. 
simplex [Wimanella], Walcott.--....-.------------- LXXXIX: 2, 2a-e; 
Text fig. 64, p. 748 
sinoe [Obolus], (Walcott) sseeeeee eee re eae NONI 2, 2a-h. 
Siphonotreta dubia Walcott-...--..---------- -LXXXI: 7, 7a-b. 
unguiculata (Eichwald) -LXXXI: 6, 6a-e. 
verrucosa (Bichwald).-..-------------- -LXXXI: 5, 5a-b. 
smithi [Obolus], Walcott. .--....---------------+--- Text figs. 38A-B, 
p. 416. 
socialis [Acrotreta], von Seebach......-.------------ LXXIII: 3, 3a-c; 4, 
4a-e. 
