#dosinia

[drhoz]

#2636 - Dosinia anus - Coarse Dosinia

AKA  Cytherea (Artemis) anus, and Dosinia horridus, tuangi-haruru, ringed dosinia, coarse dosinia, or coarse biscuit shell. A common surf clam around the islands of Aotearoa, buried in clean sand down to about 15m depth. The largest and heaviest species in the genus, occasionally exceeding 80 mm in diameter.

Timaru, Aotearoa New Zealand

[morphons]

Beach finds from Par Sands and Polkerris Beach, Cornwall. 29 November 2019.

12 surf clam (Spisula solida) halves.

1 hard clam (Mercenaria mercenaria) half – not confident with this id.

2 rayed artemis (Dosinia exoleta) halves.

5 banded venus (Clausinella fasciata) halves.

1 thin tellin (Tellina tenuis) pair.

1 blue rayed limpet (Patella pellucida).

1 striped venus (Chamelea gallina) pair, + 5 halves.

1 rayed trough shell (Mactra stultorum) half.

1 painted top shell (Calliostoma zizyphinum).

1 flat periwinkle (Littorina obtusata).

2 netted dog whelks (Tritia reticulata).

and probably the last weathered shell fragment I’ll collect. I’d already stopped picking these up, however perfect, and only took this one to make a point about omitting this object type from beach hauls from now on.

23 glass fragments, 22 of which are the usual lovely rounded ones, and 1 is an unusual piece of black (very dark green) glass. The frosting on the raised concentric circles (which, if this is the base of a bottle, would have been on the inside) is perfect, and a pleasant contrast with the jagged (but worn enough to not be sharp) edges.