These pictures were made to illustrate the variability of comma (in the good old lumper days, a subspecies of cribraria). Now, the whole genus has been split up on account of deeper insights on their biology, zoogeography and genetics. We are now distinguishing comma and esontropia francescoi, the latter having coarser, less numerous teeth, a reduced to absent pattern along the labrum, and more or less distinct labral spots. Finally, there usually is a marked darker middorsal band in e. francescoi, not very well visible in the shells depicted here. Personally, I agree with everyone complaining that things used to be easier in Burgess' days.

1 - 4: comma, Zanzibar Island. Typical specimens
5 - 9: esontropia francescoi, Southern Madagascar. Variation with marginal spots.
10: comma, Tanzania. Specimen resembling the holotype (with comma- shaped markings)
11: comma, Natal, South Africa
12: esontropia francescoi, Variation from deep water (150m), Punta Zavora, Mozambique
13: comma, Unusual specimen from Zanzibar Island
14: comma, Tulear, Madagascar
15 - 16: comma, Colour variations, Tanzania