Rhiostoma

• Rhiostoma abletti

  The shell surface has fine growth lines. It has been recorded in northern Vietnam.

• Rhiostoma americanum
• Rhiostoma anceyi

  This land snail is known from Vientiane and Phongsaly provinces, Laos.

• Rhiostoma asiphon

  The shell is thick and depressed. The detached final whorl is shorter than the aperture width or nearly absent. The notch-shaped breathing device has a protruding outer lip with a shallow notch. It is known from the limestone islands of Ang Thong. It is known from the Ang Thong Islands, Surat Thani, Thailand.

• Rhiostoma breviocollar

  This land snail is known from Lopburi and Uthai Thani provinces in central Thailand.

• Rhiostoma cambodjense

  The shell surface has fine growth lines. It has been recorded in Cambodia.

• Rhiostoma cheliopegma

  This land snail is known from Chonburi and Rayong provinces in eastern Thailand.

• Rhiostoma dalyi

  The shell is whitish with brownish zigzag markings. It has been recorded in northern Thailand.

• Rhiostoma ebenozostera

  This land snail is known from Loei and other provinces in Thailand.

• Rhiostoma furfurosum

  This land snail is known from limestone hills in Phitsanulok and other Thai provinces.

• Rhiostoma gnomus

  This land snail is known from Nan Province, Thailand.

• Smith's Snorkel Cyclophorus Rhiostoma hainesi

  The shell surface has fine growth lines. It has been recorded in Thailand.