Dear Patrick, Below are George Radwin's descriptions of Anachis avara and A. lafresnayi, from The Veliger, Vol. 20, No. 2: Costoanachis avara (Say, 1822) Shell moderate in size (10 - 20mm in length); spire slightly greater than 1/2 shell length, whorls convex, suture shallow; body whorl cylindrical, moderately broad, aperture moderately wide, apertural lip slightly thickened, weakly denticulate interiorly, columella straight, nondenticulate; siphonal canal short and straight; sculpture of widely spaced ribs on body whorl only, all other whorls smooth. Color pattern of irregular brown blotches on a white background. Costoanachis lafresnayi (Fischer & Bernardi, 1856) Moderately large (10 - 16mm in length); spire high (more than 1/2 total shell length), whorls flat-sided, suture moderately impressed; body whorl fusoid; aperture moderately broad, apertural lip thickened; denticulate interiorly, columella straight and strongly denticulate, siphonal canal short to moderately long, slightly bent; sculpture of numerous prominent axial ribs crossed by weaker spiral grooves; color from straw yellow to chestnut brown with a spiral subsutural row of white spots. Hope this helps. - James