noun which may take the genitive case particle 'no'
this kind of; this sort of; this type of
Used as a prenominal modifier with の to describe a category or type. Often interchangeable with こういう or こんな, but slightly more formal.
この種の問題は初めてです。
This kind of problem is a first for me.
この種の本が好きですか。
Do you like this sort of book?