ornately marked and extremely colorful snails of brackish seas
- A genus including many species of shells resembling Nerita in form. They mostly inhabit brackish liquid, and tend to be usually delicately tinted.
(letter.) A genus including many types of shells resembling Nerita in type. They mostly inhabit brackish water, and tend to be usually delicately tinted.
As examples of the former may be named- Archaeobdella, Clessinia variabilis, Neritina liturata, Gmelina, Gammarus moeoticus, Pseudocuma pectinate, Paramysis Baeri, Mesomysis Kowalevskyi and M.