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TOMBE ie dig vaccine ceteces 12 
Tuga schiedeand........eeeees 462 
Krynickia americuna .... 848, 349 
LABYRINTHUS .......... 175, 628 
Labyrinthus oo... eee ee 176, 178 
annuliferus ........066. 177 
—— annuliferus oi ereevccces 175 
—— furcillatus ..... peadercws 176 
—— hydeanus .............. 178 
——- hydeanus ...... .... 175,177 
labyrinthus ...cceseeeee 178 
leucodon. .. 6c. cvvccccaes 177 
———~ OTB. eee eens 178 
OLS. eee ccc ccnceeeees 179 
—— plicatus.............0.. 177 
—— plicatus........ 175, 178, 179 
—— quadridentatus...... 176, 628 
—— quadridentatus ...... 175, 177 
—. , var. minor........ 628 
subplanatus .....ceseaes 177 
LAMSUANUS 0. eee cee 177 
tArApOtOneNstS ......600.% 176 
triplicatus.......... 176, 628 
triplicatus .....6..4 175, 661 
——- uncigerus ...........00, 177 
—— UNCIJEIUS 6.6.66 0 00 172,175 
— YALESE cee vce e nner eene 176 
Damellavis. ccc ccacceas 312, 316 
—— filicostatus.....6ceeceeee 319 
—— imperforatus......eeeeee 320 
MELUCUNUS 6.6. ce seeeees .» 316 
MOMESUS vos eescveeeees 316 
Lamproscapha .viscvccvcsvees 525 
Lampsilis...... 480, 486, 490, 491, 
509, 649, 650, 651, 652 
TOVUOSAL veces evens ,. 651 
Sp., AN parvus?P ...ee. ». 623 
Lapidosus vivccccsccvcvccces 651 
BONG ea vacances 525, 537, 539 
Leiostracus attenuatus ........ 215 
CE 1 206 
GTUNETE voc cvccvacnceees 245 
——— JONASE. ee eececvenrreees 212 
MACULALUS Loe cece eeeenee 220 
————_ MOTICANAL oo vc evavcveees 227 
Leptarionta ..cccecseccseces 154 
bicincta...... See 157 
flavescens ...se0e aera 142 
Leptaxis mexicana,.... eee 160 
LEPTINARBIA ........006- 312, 639 
UROBUNATIC oon ccceveees 291, 308, 
814, 318, 821, 323 
—— ambigua ........++..-- 321 
ambigua -...... 3138, 315, 666 
Sete DIOS PA 2 cscgiase ++ sean, BIO 
INDEX. 
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Leptinaria biolleyi.... 318, 315, 666 
convoluta ...........04. 322 
convoluta ...... 313, 315, 666 
—— costaricana ........ 320, 639 
costaricana ,... 313, 315, 666 
——- crenulata .......... 318, 639 
—— crenulata ...... 3138, 314, 666 
—— elise... ce eee eee eee 322 
—— else .. 318, 315, 317, 323, 666 
—— emmeline......,....... 323 
—— emmeline .. 312, 313, 315, 666 
——— EX1gUA 2... cece eee eee 318 
CLIQUE vs. .00e, 3138, 314, 666 
—— filicostata .............. 319 
—— filicostata ......0... 3138, 315 
fordiana..........0..08. 320 
Sordiana wivesecaes 318, 315 
—— guatemalensis .......... 319 
guatemalensis ., 318,315, 318 
, var. majuscula ..,. 319 
—— -—,, var. majuscula .... 318, 
315, 666 
hapaloides.............. 321 
hapaloides...... 313, 315, 666 
—— hyalina ................ 317 
—— hyalina ............ 313, 314 
imperforata ............ 320 
amperforata ........ 313, 315 
interstriata .........0.- 318 
interstriata ....64.. 318, 314 
——martensi .............. 316 
—— martenst ...... 313, 314, 640 
— , var, inflata........ 316 
— , var. mflata ...... 318, 
314, 318 
—— mexicana ..........008 316 
MEXICANG ...... 313, 314, 320 
, var. abbreviata .... 316 
, var. abbreviata . 318, 314 
—— , var. turrita........ 316 
— , var. turrita ., 313, 314 
paludinoides ....ceceeees 313 
pittieri ..........0, 317, 639 
prttiert ....aee 313, 314, 666 
— , var. obliquata...... 317 
—— ——, var. obliquata...... 3138, 
314, 666 
SAULCUNG . ove sr evcecenee 320 
SIMPSONL ......0 eee eee 320 
SUNPSONE .seeereee 318, 315 
—— Sinistra .........ee eee 319 
—— simistra........ 313, 314, 666 
BOlid@. 2. eee ccc eee 321 
SOMA .iverees 318, 315, 666 
——- stolli .. esse cece eee ees 316 
stolli...... 312, 318, 314, 666 
Deptinotarsd vevssccccccevees 639 
689 
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Leptomerus .... 138, 237, 238, 239 
alternans ........ sheers 230 
berends vives va cecn exons 249 
——— COTLACEUS oa eeccscceees 248 
COTREUS oo cecssenusenane 246 
CUCULIUS Loe ee cee neeeees 214 
AOMIANICUS Vee eee ceeeees 237 
———— ETYBONT vere sccccnees 250 
hondurasanus ......e00. 232 
MEPIS oo eee ecccccnnees 250 
USCAPENSIS 6... eee eeeee 248 
MACULALUS . eeepc eee enes . 220 
—— nubeculatus ........000. 247 
PANAMENSIS .. cece ceeee 237 
PelENENSIS Lo cc eecseveees 248 
SATCOdES 6.6 eee e eee eee 248 
translucens ....ceeceaes 250 
—— umbraticus oo... cee eee. 251 
UNWCOlOT 6. cece ccc nenes 248 
Leptonaias .. 66. cece eee cee 481 
Leptonyx sumichrasti ........ 344 
Leptostphon .isceecccccccees 540 
Les Hyalines ... 0... ccc cca 118 
Les Trachéloides .........05. 286 
Leucochila wc. cee cee 327, 329 
Chordata... ier eecaeees 330 
UT 327 
fallax... ...6 5. + die saline 329 
——— MAYGINALA Lecce enn. 829 
—— pellucida ....eceeeeeeee 328 
50) 328 
Leucochilus. ccc cece ccees 327 
THONG 0 oe cis i ean eg 12 
LIMACIDD .. ee eee cece eae 346 
| 5. 0. 347 
Dimaxn weveececcaee 342, 345, 849 
AGTOSLUS . 6. cece en eenee 347 
Argentinus.......... 348, 349 
—— berendti .............. 349 
brasiliensis ......4. 348, 349 
Drunneus ..ecececesaees 347 
CAMPESEIIS. . cca eens 347, 349 
cobanensis..........204. 349 
—— guatemalensis ...... 348, 349 
—— hyperborets ........ 248, 349 
jalapensis ...........,.. 349 
—— levis ..........000, cone O47 
—— @VIS oo ecccsersceccees 349 
——— MONLANUS oc ercecescees 348 
parvulus ....eseeee vee. 348 
semitectUS .... 66.005 348, 349 
1 348, 349 
VATUCGALUS . 6. - ec eeecnee 349 
LIMNZA... cece eee eee 375, 643 
Limnea,.., 340, 341, 354, 376, 379 
—— attenuata .............. 375 
attenuata ,, 376, 377, 381, 427 
