Ancilla matthewsi
"Shell fusiform, greatest width at middle of body whorl; spire high, smooth, pointed; callus expanding on body whorl, but not covering the preceding suture; 3 or 4 plaits on base of columella; columella excavately arched then slightly twisted; minute vertical striations on body whorl; two spiral basal grooves, the lower groove starting at the notch and ending at columella with a small plait on interior, the upper groove pitted with rib-like nodes; outer lip with minute tooth before turn at base; shell orange, but some paratypes apricot or white. Dimensions of the holotype are, length 18.8 mm., length of aperture 12.4 mm., width 9.1 mm. The dimensions of the paratypes vary from length 20.1 mm., length of aperture 11.9 mm., width 8.7 mm. to length 11.9 mm., length of aperture 5.0 mm., width 5.0 mm.". Recent. Fortaleza, Céara, Brazil.