1) Animal class 2) Class 3) Class nuda 4) Ctenophores lacking tentacles 
Nuda is a class of ctenophores or comb jellies. The class contains a single family, Beroidae, with two genera, Beroe and Neis, and the group is more commonly referred to as the `beroids`. They are distinguished from other comb jellies by the complete absence of tentacles, in both juvenile and adult stages. Beroe is found in all the world`s ocea......
[n] - ctenophores lacking tentacles
class Nuda noun ctenophores lacking tentacles; comprises one genus: beroe