[Names in small capitals refer to Families, &c. ; 
I.N DoE xX. 
those in roman type to the chief reference to each species included in the work; 
those in italics to species incidentally mentioned, synonyms, &c.] 
Page 
Acanthinula. .128, 180, 181, 621, 622 
—— aculeata. ec cccccecces 1380 
—— cecoides......... ie ee . 181 
GRORUMNE 6 OES Os 131 
guatemalensis .6......05 131 
—— intonsa .......0005 cebu DOL 
PUNCLUM oesccseese 131, 659 
ACEPA ee cece aisle tage he bas 273 
Achatina ...... 296, 312, 316, 613 
alabastrind .......0000 60 
GUDErSt vec cers ecccees 75 
AMDUQUE Lec cece eens 72 
——— AMLENUAE vee eeccccccees 80 
QUIATA vice cece ccc eces 57 
herendtt..sscccccccveves 301 
—— Dullata vice iccccccceess 79 
CANMIAA . cece cecaccvcces 66 
—— CArMINENSIS 2.1... eeeee 61 
CATNEM vw ecvevevcccveees 67 
CRUIAPENSIS 6.60 cece ceaes 303 
conularis .....4. a segs si 66 
COYAOVANG vecececececes ~ 40 
COTONAA ee ceee eeeees 54 
—— cylindracea........ 67, 73, 93 
cylindrella......... eetes 300 
dactylus......665 a eee's 80 
daudebartt......0.ceceeee 62 
AECUSSALA occ cece ceees 58 
Deltbuta occ cecesccccaces 97 
delicatula ... cece cece: 70 
—— dysont ...... weeresen es 102 
——— filO8G vo. ecccsueees woe. 74 
SUsifOrmis oo... cceeees 57, 58 
—— ghresbreghtt ........006. 58 
UMNSUGNIS voc vveausceccoes 62 
COLD? yoo vee cee anes 324 
UADELUNA 6. ccc cveceeves 63 
1 {a vee... 86 
largillertt:. 0. cece es ees 67 
lattret ove cece eceeeeees 91 
WiebMANNt .....ceeeees 61, 62 
lgnaria ....eeeeeeee x. 67,8 
—— ligulata ..cccscvccvcceee 103 
WRU ORG oo. eee reece ees 304 
Page 
Achatina margaritacea ...... 81 
MORON ek ces aces 62 
i MOTION. OS kc oe a's 75 
MONE a Soe ee coy Gales oes 79 
MOB EO See Ele Cae 77 
MUCOUEEE 0. viv vesicle vies oa wa 85 
PTB elec s 90 
ODLUSA vee cece ee eeaee 76 
OCTONE recs ceccvcveees 298 
OTIRADE wees eeeee veceee 73 
Plt oo. rerececccsscees 59 
—— physodes .......ecseees 99 
plicatula wi. eee eee 80 
—— pulchella ......66..0. 83, 613 
PANGUANGE vociccececenes 300 
POSE wovvcceeee 59, 60, 61, 78 
2 75 
SOWEFDYANA ic eereceees 55 
——— SPECIOSA wer eeccercccnes 71 
SEUGMALICH 6... cece cues 77 
streptostyla wi... cece eee 94. 
SErUATA vee ee aes 62,78, 79 
——— SUBUID eve ccceesecees 291 
tortelland .icceccccceaee 72 
trochled oc cease eeeeeee 299 
WUNCALA eee ec aeeenee 78 
trypanodes ........ 303, 305 
—— tUITIS......6 wea eens .. 65 
VANULEMENSIS sve rveceees 54 
YUCATANENSIS . 00ers evens 67 
ACtINONAIAS cecicevceeceeees 481 
Adamsiella vivccccceccceves 16 
OBDGITE is’ veveaceces 16, 599 
VUGUAULA ove cc eevceeenee 16 
AdelopoM ... cc svcccceccveees 601 
LAEGTCD, vec ceecevaes weer ete. 481 
FEQUE. Foe w ieee nec eeccenes 481 
AGRE. Ciba cee vee ceverce 145 
AQUA adpescewccceses 145, 147 
MOPMONUM .iverseee ... 162 
BONYE cae ne Raw eueee 623 
Aglaisma ...ceeeeee Da Dhekce 9s 147 
AGNATHA |.....0¢ 0. es sesti's's 45 
A grtoltnan: ocvec ees ee eee 347 
Page 
Agriolimax lacustris ........ 348 
ete ee cs ae 847 
Alea pellucida. fre oe ee 328 
Alampetis ....,. 363, 368, 369, 667 
AOR ee vec ieh ened 32 
MNlest@. 6 es (ee veees 563 
Alintt’ boo. 0 c8 Ree 468, 475 
Amblema 88 a eae 479 
AMMONOCEFAS ....cceveee ee EIS 
CAME rine ccie ets 108 
AMNICOLA 050000 600. cea 430, 645 
Amnidolit’ 68 Coo ceek scenes 431 
—— (?) bakeri ............4. 435 
OOREPE ooo ene oh eb ee 431 
CANAEANA .eceeveseevees 433 
cincinnatiensis ......600. 432 
coronata ......... eee 4382 
—— coronata .......... 431, 4383 
, var. crystallina .... 434 
—— ——, var. erystallina .... 481 
—— ——., var. inermis 
—— ——,, var. unicarinata.... 4383 
, var. unicarinata.... 4381 
costaricensis ........ 435, 645 
costaricensis ........ 431, 668 
CrYStCALUINA., ve cece ees 433, 434 
oe , var. coronata...... 433 
— , Var. spinifera...... 433 
—— guatemalensis .......... 432 
—— hyalina 2... ee cee 432 
—— hyalina ..... cece cece 431 
—— (?) hydrobioides ........ 435 
—— hydrobiordes ,.......006. 431 
——— WMOBG, vee cccccvceees 430 
(?) melanioides.......... 436 
melanioides ........ 431, 668 
—— (?) ——, var. tentis..... . 436 
—— , var. tenuis .... 481, 668 
orizabensis ............ 432 
OTIZADENSIS... ce eee evens 431 
OTM sever ecccevever 433 
palomaensis ........ 454, 645 
palomaensts ....cereeees 431 
—— pamamensis ............ 432 
BIOL. CENTR.-AMER. Terr. and Fluviat. Mollusca, May 1901. 86 
