Shell medium size for genus, fusiform, length of adult speci¬mens from 48.9 mm to 55.0 mm. Siphonal canal short, straight, angled from apertural plane, umbilicus open in larger specimens but as slit on smaller specimens. Smooth whitish protoconch of approximately 1 whorl, eroded on most specimens; teleoconch of 8-9 whorls with 8 heavy rounded axial ribs per whorl. Ribs on teleoconch solidly colored yellow-orange to orange-brown, interstices between with longitudinal bands of predominate shell color interspersed with white bands, 6-7 such bands on body whorl with narrow white band by suture, siphonal canal mostly white. Weak spiral cords most visible crossing axial ribs, with weaker axial lines. Suture impressed with white imbricate dentation from abapically contiguous whorl. Aperture ovate, lip weakly dentate, thin at edge and thick¬ened within, aperture lirate within after 4 mm smooth inner lip. Columella smooth with one plica with traces of a second plica in some specimens.

Latirus sarinae is morphologically closest to L. kandai Kuroda, 1950 . This latter species was described from material collected off Cape Shirazaki, Kii Peninsula, Wakayama Prefecture, Japan, but is also collected in tangle nets in the Philippine Islands. Latirus kandai is smaller than L. sarinae and has more prominent spiral cords that are white against a uniformly orange-brown background color versus cords that are the same color as the axial ribs. The lip of L. kandai is weakly dentate and the aperture is lirate right up to the lip, whereas in L. sarinae these lirae are interrupted by a smooth labral margin. The protoconchs of both species are similar in form, indicating that L. sarinae may be a reasonably widespread species

Latirus sarinae has been collected in tangle nets at various locations in the central Philippine Islands.