Eubranchus exiguus is a species

Species

In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...

 of small sea slug

Sea slug

Sea slug is a common name used for several different groups of saltwater snails that either lack a shell or have only an internal shell, in other words this name is used for various lineages of marine gastropod mollusks that are either not conchiferous or appear not to be.The phrase "sea slug" is...

, an aolid nudibranch

Nudibranch

A nudibranch is a member of what is now a taxonomic clade, and what was previously a suborder, of soft-bodied, marine gastropod mollusks which shed their shell after their larval stage. They are noted for their often extraordinary colors and striking forms...

, a marine

Marine (ocean)

Marine is an umbrella term. As an adjective it is usually applicable to things relating to the sea or ocean, such as marine biology, marine ecology and marine geology...

 gastropod mollusc in the family

Family (biology)

In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

 Eubranchidae

Eubranchidae

Eubranchidae is a taxonomic family of sea slugs, marine gastropod mollusks in the superfamily Aeolidioidea, the aeolid nudibranchs.-Genera and species:Genera and species within the family Eubranchidae include:* Baeolidia...

.

Distribution

The type locality is the harbour at Fowey

Fowey

Fowey is a small town, civil parish and cargo port at the mouth of the River Fowey in south Cornwall, United Kingdom. According to the 2001 census it had a population of 2,273.-Early history:...

, in England

England

England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

.

Description

Eubranchus exiguus was originally discovered and described (under the name Eolis exigua) in 1848, by the British malacologists Joshua Alder

Joshua Alder

Joshua Alder , was a British zoologist and a malacologist. He specialized in the Tunicata, and in gastropods.- Bibliography :* Alder J. . "Supplement to a catalogue of the land and fresh-water testaceous Mollusca, found in the vicinity of Newcastle". Transactions of the Natural History Society of...

 and Albany Hancock

Albany Hancock

Albany Hancock , naturalist, biologist and supporter of Charles Darwin, was born on Christmas Eve in Newcastle upon Tyne. He is best-known for his works on marine animals and coal-measure fossils....

.

The original text (the type description) reads as follows:
The maximum recorded length is 8 mm.

External links

• http://www.seaslugforum.net/eubrexig.htm