Roadside edge of pasture, caliche, in leaf litter of Sumac stand.
This and all other snail shells found at this site were found in a mound of flood debris. Thanks to @benhutchins for helping me with all the IDs! For the Pupillids, we used the keys found in Nekola and Coles, 2010, Pupillid land snails of eastern North America. I would not be at all surprised if we have made a few mistakes.
Found in leaf litter under palms, and on underside of palm fronds.
Tiny, sub 5mm snail shell that blew off the rock before I could get more pics. This is like the second time that's happened to me, need to make sure I find a stable spot to take pics.
Found in a litter sample from under a low oak thicket. Only Glyphyalinia sp and cf Helicodiscus nummus were found in the same sample.
From range information, size, and morphology, this does not appear to be Thysanophora hornii, or T. plagioptycha from Fullington and Pratt (1974) Aquatic and Land Mollusca of Texas.
Perhaps it is a species previously recorded from New Mexico, but I don't have immediate access to literature for that region.
From litter sample. Only one shell found.
Found in spruce/pine/hardwood litter on NW limestone slope. Collected with permission and permit.
Helicidae: Eobania vermiculata - Chocolate Banded Snail
Flood debris along Sessom Creek. This is one that I see infrequently, and have not yet been able to ID. 4th picture shows it next to Hawaiia miniscula, for contrast.
Based on Pilsbry, the larger and longer form of Rabdotus in the Guads seems to be R. dealbatus neomexicanus, but Rabdotus in west TX also seems quite confusing to me. There were consistently two sizes of shells at multiple locations in the Guads, and both (when fresh or wetted) have the 'whitewash' stripes typical of R. dealbatus.
In debris from Harvey along the Brazos. 7 specimens.
Scattered along bank of bayou. Three specimens.
Helicidae: Eobania vermiculata - Chocolate Banded Snail
Many dead shell pairs along beaches.
First time I've seen this snail. I think my ID is correct, but I'm open to other suggestions!