Surcula 
Surculoma 
surculopsis 
sylvaerupis 
tabulata 
tantula 
Taranini 
Taranis 
tenella 
tenuirostris 
terebralis 
terebriformis 
Teres 
texacola 
texacona 
texagyra 
texalta 
texana 
texanopsis 
tigrina 
tizis 
Tomopleura 
Tomella 
tornata 
transversaria 
Tropisurcula 
tryoni 
Trypanotoma 
tuberculata 
tuomeyi 
tupis 
furricula 
Typhlomangilia 
umbilicata 
unedo 
Varicobela 
vyaughani 
vetustus 
vicksburgensis 
violacea 
virgo 
whitfieldi 
zZelia 
Je 
‘ 
Page 
129,138,139,148,151,152 
153,154 
157,158 
