The brown four-eyed opossum is a pouchless marsupial of the family Didelphidae. It is found in different forested habitats of Central and South America, from Nicaragua to Brazil and northern Argentina, including southeastern Colombia, Paraguay and eastern Peru and Bolivia, at elevations from sea level to 1500 m. It is the only recognized species in the genus Metachirus, but molecular phylogenetics studies suggest that it should probably be split into several species. Population densities are usually low, and it is uncommon in parts of Central America. A density of 25.6/km2 was reported near Manaus, Brazil. Its karyotype has 2n = 14 and FN = 24.
Arianta arbustorum is a medium-sized species of land snail, sometimes known as the "copse snail", a terrestrial pulmonate gastropod mollusk in the family Helicidae.
Pristimantis ortizi is a species of frogs in the family Craugastoridae. As currently known, it is endemic to northern Ecuador where it occurs on the Cordillera Oriental in the Carchi, Imbabura, and Napo Provinces, but it is likely to also occur in adjacent Colombia. The specific name ortizi honors Fernando Ortiz-Crespo, a prominent Ecuadorian ornithologist. Common names Ortiz robber frog and Ortiz's robber frog have been proposed for this species.
The grey-winged Inca finch is a species of bird traditionally placed in the family Emberizidae, but it may be more closely related to the Thraupidae.
Allognathus graellsianus is a species of land snail in the family Helicidae, the true snails. It is endemic to Mallorca, one of Spain's Balearic Islands. This taxa is the type species of the genus Allognathus.
Oestophora is a genus of air-breathing land snail, a terrestrial gastropod mollusk in the family Trissexodontidae.
Theba arinagae is a species of land snail in the family Helicidae, the typical snails. It is endemic to the Canary Islands, where it is known only from the top of a volcano. Its entire range is about 4 square kilometers and it is considered a critically endangered species.
Trochulus caelatus is a species of small, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Hygromiidae, the hairy snails and their allies.
Partula is a genus of air-breathing tropical land snails, terrestrial pulmonate gastropod mollusks in the family Partulidae. Many species of Partula are known under the general common names "Polynesian tree snail" and "Moorean viviparous tree snail". Partulids are distributed across 5,000 sq mi (13,000 km2) of Pacific Ocean islands, from the Society Islands to New Guinea.
Haplocochlias ortizi is a species of sea snail, a marine gastropod mollusk in the family Skeneidae.
Xerocrassa cisternasi is a species of air-breathing land snail, a pulmonate gastropod mollusk in the family Geomitridae, the hairy snails and their allies. This species is endemic to Spain, where it is restricted to the north-eastern part of the island of Ibiza and the surrounding islets. The species joined at least 10 subspecies
Zarateana arganica is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Geomitridae.
Allognathus hispanicus is a species of land snail in the family Helicidae, the true snails. This species is endemic to Mallorca, one of Spain's Balearic Islands. The common name is "caragol de Serp", due to the pattern of it shell.
Xerogyra spadae is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Geomitridae.
