Family Tellinidae

Shell size to 50 mm; shell moderately inflated, posterior end bent to right, not elongate as in Macoploma tenta. Sculpture of fine, irregular, concentric growth lines. Periostracum thin, brown. Color white.

Shell size to 17 mm; shell elongate-trigonal, posterior end pointed and turned to the right. Valves convex for a tellinid, thicker than most species in the family. Pallial sinus closely approaching the anterior adductor muscle scar. Adductor muscle scars well impressed. Color generally white, sometimes with yellowish tinges.

Shell size to 10 mm; shell thin, elongate, translucent. Sculpture of very fine growth lines. Internally with characteristic oblique lines and two radial thickenings at posterior end. Color translucent-white, sometimes suffused with pink or orangish-red, juveniles almost transparent. A few shells in the Shell Museum collection such as the one in the photos are juveniles. Thanks to Markus Huber for the identification of this unusual species.

Shell size to 12 mm; shell elongate-oval, beak close to middle of shell. Shell with sculpture of commarginal lines and oblique striations. Shell color variable, usually with reddish or pink rays inside and outside. Paired valves collected by Dr. Jim Scatterday on the East End of Sanibel in early 2015.