I see you've written "JAPONENSIS 19-21". This could refer to several things:

1. It might be a scientific name for a plant or animal species. Many plants and animals have binomial names consisting of a genus and species, sometimes followed by a subspecies. "Japonensis" often indicates something from Japan.

2. It could be referring to a specific range of pages (19-21) in a document or book about Japonensis.

3. It might be part of a larger catalog number or code.

Without more context, it's difficult to determine exactly what this refers to. Could you provide any additional information about where you saw this or what field it might relate to? That would help me give you a more precise answer.