Japanese friend of mine gave me this link and translated.... Raven Raven!
http://ff11wiki.rdy.jp/index.php?cmd=re ... n#wd246283
It's a Qutrub type, spawns near the Reef entrance from the Dvucca Isle staging point map.
Also says due to 5min pop its rather dangerous from aggro/links. But, if this is where it is you could just zone all adds and they would depop leaving the NM.
Only thing is i have seen people killing those mobs but heard nothing of Raven Raven or the Cape on my server. Anyway, i can't rally help at this hour to go check it out unfortunately, good luck to anyone else that decides to try, post results!
Silf