A rather small solid Emarginula, the shells known measure 4.6 and 4.8 mm, respectively. When seen from above, the shape is elongate oval, but truncate on the side of the slit. Seen from aside, the shells are relatively high shaped, the apex bent backwards, but not so far as the end of the backside. This backside is steep and sloping, very concave in shape below the apex, but later straight and as one moves to the base. The side of the slit, the frontside, is big, convex in shape, rounded. In the holotype the base of the shell is slightly concave, but it is straight in the paratype. The shells are covered with a pronounced strong sculpture of radiating ribs, crossed by slightly weaker concentric ribs. Where both cross small knobs are formed, between the ribs deep square shaped pits are formed. The paratype has 24 big radiating ribs, and 7 very visible concentric ribs. The concentric ribs disappear on the lower part of this
specimen. The holotype has 21 dominant radiating ribs, a few extra ribs in between, and the dominant concentric ribs number only 4. The square formation is less visible in the holotype. When seen from aside, one can see a crenulate structure on top of the shell. The slit is very long in the paratype, not long in the holotype. On both sides of the slit a raised rib and above the slit the selenizone, covered with strong pearly knobs. The crenulate structure on top of the shells is in fact the side view of these knobs. A highly remarkable structure. The shells are colored: in the paratype, the upper half of the shell is cream white, followed by a dark green zone, descending to the base, but interrupted by some cream lines. The color of the holotype: the apex and the top of the shell are white, the rest of the shell is dark green. The interior of the paratype is covered with a thin cream colored callus. In the holotype, only the deepest part of the interior is covered with white callus, the rest is dark green. Apparently, the holotype is from a younger shell than the paratype. We refer again to the photos for a general understanding of shapes, sculptures and coloration.

We here compare the species with other Indo-Paciflc Emarginula that also have a color pattern:
* Emarginula compta Habe, 1953
Easy to distinguish because the sculpture is less heavy, and the square construction not visible. E. compta is pure white with in general 4 black blotches, equally set on each side of the shell.
* Emarginula yangeorum n. sp.
Has a white or slightly cream colored shell with multiple small dots dispersed all over. The shell is usually higher in shape compared to E. boucheti n. sp. Most shells are also larger when adult. The apex is more directed backwards in E. yangeorum n. sp.

TYPE LOCALITY: Philippines. Mactan Island. Intertidal.
Only known from the Philippines: one specimen from Siquijor, Tubod, 80 m deep, and the holotype from Mactan Island, found in the intertidal.