Taxa described in 1884

Ctenochaetus, or bristletooth tangs, is a genus of marine ray-finned fish belonging to the family Acanthuridae, which includes the surgeonfishes, unicornfishes and tangs. These fishes are found in the Indo-Pacific region. They have many, small flexible teeth and some species have the common name bristletooth.

Ctenanthe is a genus of flowering plants of the family Marantaceae described as a genus in 1884. They are evergreen perennials, native to Central and South America (primarily Brazil). They are grown for their attractive, often variegated foliage. They are frost tender, requiring a minimum temperature of .

Thomasomys is a genus of rodents in the family Cricetidae, named after British zoologist Oldfield Thomas. Nuclear DNA sequence analysis has indicated that it is a sister taxon to Rhagomys. It contains the following species:

Septoria is a genus of fungal plant pathogens in the phylum Ascomycota. They cause necrotic leaf spots on the leaves of their hosts, producing filiform or cylindrical conidia inside pycnidia embedded in the leaves. Economically important species cause diseases on field crops, forages, and vegetables. The genus is widespread, and estimated to contain 1072 species.

Lobocla is a genus of skippers in the family Hesperiidae subfamily Eudaminae, within which they are placed in subtribe Loboclina. Unlike the rest of the Eudaminae, which have a New World distribution, the genus is endemic to Asia.

Pseudoceros is a genus of the flatworms Platyhelminthes.

Bisporella is a genus of fungi in the family Helotiaceae.

Lachnellula is a genus of fungi in the family Lachnaceae. The genus contains 40 species. Lachnellula was circumscribed in 1884 by Petter Karsten, with Lachnellula chrysophthalma assigned as the type species.

Sandalolitha is a genus of cnidarians belonging to the family Fungiidae.

thumb|A slide section of Oscarella Oscarella is a genus of marine sponges. The genus can be found off the coast of every continent, in every ocean except the Arctic.

Cupitha is a genus of butterflies in the family Hesperiidae. It is monotypic, being represented by the single species Cupitha purreea, commonly known as the wax dart.

Saranthe is a genus of plants native to Brazil and Paraguay, described as a genus in 1861.

Monascus is a genus of mold. Among the known species of this genus, the red-pigmented Monascus purpureus is among the most important because of its use in the production of certain fermented foods in East Asia, particularly China and Japan. It has also been found associated with the nests of some bee species, particularly bumblebees and sweat bees though its function in these environments is unclear.

Saprolegniaceae is a family of freshwater mould. James Ellis Humphrey (1861-1897), an American mycologist did significant work on this family.

Ploetzia is a genus of butterflies in the family Hesperiidae. It consists of only one species, Ploetzia amygdalis, which is found in northern and north-eastern Madagascar. The habitat consists of forests and anthropogenic environments.

genus of worms

Acellalis is a genus of moths of the family Crambidae. It contains only one species, Acellalis iridialis, which is found in Indonesia (Ambon Island).

Eumycetozoa (), or true slime molds, is a diverse group of protists that behave as slime molds and develop fruiting bodies, either as sorocarps or as sporocarps. It is a monophyletic group or clade within the phylum Amoebozoa that contains the myxogastrids, dictyostelids and protosporangiids.

Physogyra is a genus of cnidarians belonging to the family Plerogyridae.

Cryptomitrium is a genus of complex thalloid liverworts in the family Aytoniaceae. The genus name means “hidden turban” in reference to the inconspicuous sheath around the immature sporangium.

Cycloporus is a genus of flatworms in the family Euryleptidae.

Gymnascella is a genus of fungi in the family Gymnoascaceae. It was described by American mycologist Charles Horton Peck in 1884 with Gymnascella aurantiaca as the type species.