Farcimen ¿auriculatum or hendersoni or other?

[trivio]

I have this specimen <b><i>Farcimen </i></b>(Megalomastomidae) that has been sent to me like <b><i>Farcimen auriculatum </i></b>(Torre & Bartsch, 1842) from Cuba. But I have seen pics from the internet and compendium of landshells and I think is more similar as <b><i>Farcimen hendersoni </i></b>Torre & Bartsch, 1942. What do you think?

This is my specimen:
<img src="http://www.filosofia.tk/animalia/Porclasificar/farcimen.jpg" alt="http://www.filosofia.tk/animalia/Porclasificar/farcimen.jpg" style="border:0" />