Olivella perplexa Olsson, 1956, Compared with O. acteocina
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Let's Talk Seashells!->Mollusks and Shell Collecting->Discussions/presentation at the species level - Univalves  |
Olivella perplexa Olsson, 1956, Compared with O. acteocina| Marlo |
Posted: Oct 11 2006, 11:39 AM
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 LTS Administrator  Group: Admin Posts: 1,987 Member No.: 2 Joined: 12-November 05  |
Olivella perplexa Olsson, 1956
This exchange moved here from another topic discussion in order to highlight O. perplexa. Tom, Thanks for such a prompt list (shells from Cape Romano). Please take another look at the Olivellas. I'm certain there are O. pusilla, O. perplexa and O. inusta. Here's an image of the O. perplexa from the lot.  Take care, marlo Tom responded: Yes, this the species I called Olivella acteocina. But it matches Redfield's photo. What are the differences between acteocina and perplexa? GTW Marlo replied: Tom, I do not have any O. acteocina to analyze for comparison. I am relying upon the following: Abbott does not place O. acteocina in Florida, rather the Bahamas to Panama. Mollusks, 2nd ed. does not include O. acteocina as occurring in the USA. Considering the various specimens I've collected around Florida and reviewing Redfern's notes, I'd say the adult O. perplexa is consistently smaller (protoconch plus three whorls as compared to O. acteocina's five whorls). Unfortunately, this is not one Colin photographed live. However, Harry confirms the animal is the same as his records of live O. perplexa. marlo |
     
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