True Stylocheilus longicauda from Caribbean

Dear Betsey,
I'm afraid your first nudibranch wasn't a nudibranch at all!. It is a Sea Hare. Both Sea Hares and nudibranchs are Sea Slugs (Opisthobranchs). If you look at the General Topics List the many entries on Sea Hares should give you some background information on the group.

Your animal is very interesting. It has, since 1828, been known as Stylocheilus citrina, but I am afraid that that is incorrect. Earlier this year Clay Carlson and I, among other things, were discussing the real identity of the common lined Stylocheilus which has usually been called Stylocheilus longicauda. We both agreed that this was incorrect but with many other things to do decided to put the problem in the 'not very urgent' pile.

However your photograph meant I have been forced to do something. While I could privately ignore the problem, once your photo arrived I was not happy with having to continue the charade that this yellow animal was Stylocheilus citrina, when I knew it really was the true Stylocheilus longicauda. So thank you for providing the catalyst for me to address the problem. Have a look at the Top of this Page and at my separate message on the Stylocheilus problem.

I must say all your photos are proving very interesting subjects.

Best wishes,
Bill Rudman.