Photos for Identification
     

March 15, 2012

Copyright 2012 Jo O'Keefe All Rights Reserved

Lyonsia hyalina hyalina (Conrad, 1831) Glassy Lyonsia -- new specimen
Lyonsia hyalina hyalina (Conrad, 1831) Glassy Lyonsia -- original specimen from website

Mercenaria mercenaria (Linnaeus, 1758) Northern Quahog
Mercenaria mercenaria currently on website
   
Epitonium angulatum (Say, 1831) Angulate Wentletrap -- juvenile
Epitonium multistriatum (Say, 1826) Many-ribbed Wentletrap -- slender form
   
Donax variabilis Say, 1822 Variable Coquina -- juvenile
   
Harry, I think that the four specimens below are Ilyanassa obsoleta. They are adults, too large to fit within the camera frame when I use the microscope. On the website I only have juveniles of two species. The average beach walker is unlikely to find juveniles but will see these. They are usually dark brown. The photos from the website are beneath them.
1. Ilyanassa obsoleta (Say, 1822) Eastern Mudsnail
2. Ilyanassa obsoleta (Say, 1822) Eastern Mudsnail
   
3. Ilyanassa obsoleta (Say, 1822) Eastern Mudsnail
4. Ilyanassa obsoleta (Say, 1822) Eastern Mudsnail
FROM WEBSITE:
Ilyanassa obsoleta (Say, 1822) Eastern Mudsnail -- juvenile
FROM WEBSITE:
Ilyanassa trivittata (Say, 1822) Three-line Mudsnail -- juveniles
Harry, these are Atrina, photographed in the hope of finding a third species. I had them packed to ship to you. After reading that you only were interested in small shells, I unpacked them and photographed them. They are all juveniles, less than five inches tall. I did not figure out how to photograph them at good angles. I could reshoot, should you identify a new species. Also, because the flash went off, I rephotographed some specimens. Hours later I could not tell the first shots from the later shots.
Atrina 1
Atrina 2. This looks like Atrina 1 but was more than 1,000 pixels wider.
Atrina 3. Atrina serrata (G. B. Sowerby I, 1825) Sawtooth Penshell
Atrina 4. Atrina serrata (G. B. Sowerby I, 1825) Sawtooth Penshell
Atrina 5. Atrina serrata (G. B. Sowerby I, 1825) Sawtooth Penshell
Atrina 6. This could be Atrina 1 or Atrina 2. I am sorry for not knowing. It appears to be the same species. That is all that matters. I can rephotograph later.
Atrina 7. I do not know if this is above. Because it isAtrina serrata (G. B. Sowerby I, 1825) Sawtooth Penshell, that should not matter.