Leporicypraea mappa is, together with tigris, the most famous cowrie of all. Its many forms, varieties and proveniences are still occupying the work of classification of the most referenced malacologists in the world. I can remember, already many years ago, some erudite, friendly and continued disputes on magazines and books, between Raybaudi and Lorenz to have the last word in this field. Raybaudi bought thousands of specimens from any available dealer to complete his studies on this species, but Lorenz preceded him by publishing a systematic revision. To remain in the classic, I display here 3 large specimens of mappa mappa from Philippines (the largest is over 101 mm, from Quiquandon), 4 selected specimens of mappa panerytra (the form I like most) and omit the big number of further forms and varieties I have in collection.
Trona stercoraria is one of the most variably patterned cowrie. Coming from West Africa - from Senegal to Namibia - it has a range of sizes, colours and shapes that rarely one can see in another cowrie species. Size varies from 30 to 100 mm. Colours vary from white to grey, rusty, brown, violet, orange, green and black, often with leopard spots, or patches, or algae stains, or with half body differently coloured by the other half, or else with contrasting mantle line on dark dorsum. Shapes vary from elongate to very wide, dorsum from flat to very humped, weight from light to very heavy and calloused. Here, I amused myself to display some different specimens, setting the focus on this variability. The largest specimen is 97 mm from Mbour - Senegal, got from Quiquandon a long time ago.