Names where authority is Mendelson, Mulcahy, Williams, and Sites
- Class: Amphibia
- Order: Anura
- Family: Bufonidae
- Genus: Incilius
- Species: Incilius chompipe (Vaughan and Mendelson, 2007)
- Synonym: Incilius chompipe — Mendelson, Mulcahy, Williams, and Sites, 2011
- Species: Incilius epioticus (Cope, 1875)
- Synonym: Incilius epioticus — Mendelson, Mulcahy, Williams, and Sites, 2011
- Species: Incilius guanacaste (Vaughan and Mendelson, 2007)
- Synonym: Incilius guanacaste — Mendelson, Mulcahy, Williams, and Sites, 2011
