GEOGRAPHICAL DISTRIBUTION. 
109 
TABLE OF DISTRIBUTION OF SPECIES IN THE SEVERAL 
GEOGRAPHICAL REGIONS. 
Species noticed in 
the Pacific Region ^ 
only. 
Species noticed in 
the Central Region * 
only. 
Species noticed in 
the Atlantic Region 
only. 
Species noticed in 
both Central and At- < 
lantic Regions. 
Succinea nuttalliana, rustic ana. 
Helix californiensis, columbiana, labiosa, loricata, 
nickliniana, nuttalliana, sportella, strigesa, towns 
endiaua, tudieulata, vancouverensis. 
Succinea luteola. 
Helix albocincta, berlandcriana, buflbniana, clausa 
cumberlandiana, demissa, elevata, exoleta, gula- 
ris, interna, lasmodon, leporina, limatula, maxil- 
Iata, multilineata, pennsylvanica, rotula,saxicola, 
solitaria, spinosa, sub-plana, texasiana. 
Bulimus dealbatus, superastrus. 
Glandina vanuxemensis. 
Vertigo decora. 
Helicina occulta, chrysocheila. 
Vaginulus floridanus. 
Arion hortensis, 
Limax agrcslis, variegatus. 
Succinea campestris. 
Helix aspcrsa, cellaria, hortensis, jejuna, hicida, 
multideututa, uttouis, rhodocheiia, selenina. 
Bulimus dccollatuSj undatus, lasciatus, subula, vir- 
gulatus. 
Cyclostoma dentatum. 
Pupa incana, modica, pontifica. 
Cylindrella campanulata, jejuna, lactaria. 
Achatina gracillinia, pellucida. 
Tebennophorus carolim'ensis. 
Lunax campestris. 
Vitriua pellucida. 
Succinea avara, a urea, ovalis, obliqua, putris. 
Helix albolabris, alternata, appressa, arborea, auri- 
culata, chersina, concava, dentifera, electrina, 
fatigiata, fuliginosa, liirsuta, hillecta, indentata, 
inornata, intertexta, labyrintbica, ligera, lineata, 
lucubrata, major, minuscula, mobiUana, mono- 
don, palliata, perspectiva, profunda, pulchella^ 
pustula, sayi, septemvolva, striatella, suppressa, 
thyxoidus, tridentata. 
Bulimus lubricusj exiguus, fallax, harpa. 
Glandina truncata. 
Pupa armifera, badia, contracta, corticaria, rupicola . 
Vertigo gouldii, milium, ovata, pentodon. 
Helicina orbiculata. 
29 
