The Cryptotype is distinguished from the prototype in an attempt to show that while a speaker of a language is consciously aware of his use of some categories, other categories are so deeply ingrained in his consciousness that they are difficult, but not impossible, to become aware of.
A Cryptotype is separate from "covert category”, which refers to "a special, highly concealed subdivision of covertness, amounting sometimes to a second degree of covertness.
The Cryptotype is , for example, represented by the pronouns "he", "she" or "it” which a speaker must know, just not overtly so.
A Cryptotype is a semantic or syntactic feature that does not have a morphological implementation, but which are crucial for the construction and understanding of a phrase.