09 Testudinalia testudinalis. Shell length 13.9mm. Littoral. Moray Coast, Banffshire, Scotland. May 2017. Leg. S. Taylor.

09 Testudinalia testudinalis. Shell length 13.9mm. Littoral. Moray Coast, Banffshire, Scotland. May 2017. Leg. S. Taylor.

Brown and blackish brown marks radiate from the apex, bifurcating and reuniting to form a reticulated pattern that may be a wide open net with the white ground colour dominant, as on this specimen.

APPENDIX re range advance/retreat: flic.kr/p/2jW74ig

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