Was I dreaming, or did someone start scoping these at some point in the past?
The names don't sound familiar, do you have links to pictures of them?
I thought I had seen a WIP once of one of these. I'm including links so that maybe if I'm not dreaming, someone might recognize them. The Concordance pages will require that you look a little.
http://extraterrestrialsexuality.files.wordpress.com/2010/06/pupeteer.jpg
http://news.larryniven.net/concordance/main.asp?alpha=K
http://www.startrek.com/database_article/kzin
http://news.larryniven.net/concordance/main.asp?alpha=N#Nessus (look for Nessus' entry)
None of these look familiar, I don't recall seeing any meshes/skopes/skins for these characters.