†Agladrillia (Agladrillia) leptalea, W. P. Woodring 1928 Agladrillia leptalea is an extinct species of sea snail, a marine gastropod mollusk in the family Drilliidae.

(Original description) The shell is small and slender, with a protoconch consisting of about two and a half whorls.

The sculpture features narrow axial ribs that are weakly overridden by very fine, widely spaced spiral threads.

The anal fasciole is flat, adorned with curved, attenuated prolongations of the ribs and finer, more closely spaced spiral threads than those found on the rest of the whorl.

[1] This extinct marine species was found in Pliocene strata on Jamaica.