Phymorhynchus buccinoides is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.
The Japanese name of this species is Tsubunari-shajiku.[1]
The type locality is off Hatsushima, Sagami Bay, 35°00.2' N, 139°13.5' E, Japan in depth 1160 m.[1]
There is no known other locality up to 2005.[1]
It lives in seeps.[1]