I guess most collectors have juvenile Modulus modulus identified as M. carchedonius.

Marcus Coltro
WWW.FEMORALE.COM


From: Conchologists List [mailto:[log in to unmask]] On Behalf Of Thomas Eichhorst
Sent: Wednesday, August 11, 2010 1:22 PM
To: [log in to unmask]
Subject: Re: [CONCH-L] Modulus modulus x carchedonius (once more...)

Marcus,

Great image, thanks!!

Tom Eichhorst

From: Marcus Coltro <mailto:[log in to unmask]>
Sent: Wednesday, August 11, 2010 6:45 AM
To: [log in to unmask]
Subject: [CONCH-L] Modulus modulus x carchedonius (once more...)

One thing about acquiring an old collection is that it forces us to do some revisions....
I found an old Conch-L post from Marlo about Modulus modulus x carchedonius, reproduced on "Let's Talk Seashells"
http://z14.invisionfree.com/Conchologist_Forum/index.php?showtopic=251
Then checked several lots from Bunnie Cook's collection and my own database - she identified specimens from St. Croix as M.
carchedonius (a good thing about her shells is that all info is 100% reliable!).
http://www.wonderphotos.com/shellphotos/modulus.jpg
From Johnsonia's pictures and description I am not sure if I agree with her identification - plus, the specimen pictured as
carchedonius looks more like catenulatus (West America) than anything else!
I wonder if anyone has ever found any specimen exactly as the description shows. Modulus modulus is very variable and young
specimens tend to have angulated shoulders and may have columellar tooth white.
Any thoughts?
Marcus
Marcus Coltro
www.femorale.com

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