There is one definition in
http://hbs.bishopmuseum.org/publications/pdf/bm-tp41.pdf, "A Compendium of
Zoological Type Nomenclature: a Reference Source", a very complete list
prepared by Neal Evenhuys of the Bishop Museum. 

His definition is:

Hypotype: A specimen, other than the type, upon which a subsequent or
supplementary description
or figure is based (syn: apotype, heautotype, plesiotype).

I am sure there are variants out there. 
________________________________________________________
José H. Leal, Ph.D., Director and Curator          
The Bailey-Matthews Shell Museum
Editor, The Nautilus            
www.shellmuseum.org                             
                                                
3075 Sanibel-Captiva Road
Sanibel, FL 33957 USA
(239)395-2233
fax (239)395-6706
P Please consider the environment before printing this e-mail
 
 
 

-----Original Message-----
From: Conchologists List [mailto:[log in to unmask]] On Behalf Of Enzo
Campani
Sent: Friday, April 09, 2010 12:27 PM
To: [log in to unmask]
Subject: [CONCH-L] Info

Hi all,
having met the term "hypotype", I looked for it in my ICZN copy
without finding it and I had a similar result searching ICZN on line.
Now I wander if this "hypotype" has an official relevance in the
nomenclature or not.
Thank you all
Enzo


Enzo Campani
C.so G. Mazzini 299
57126 Livorno
Italy
Cel 3475362343

----------------------------------------------------------------------
[log in to unmask] - a forum for informal discussions on molluscs
To leave this list, click on the following web link:
http://listserv.uga.edu/cgi-bin/wa?SUBED1=conch-l&A=1
Type your email address and name in the appropriate box and
click leave the list.
----------------------------------------------------------------------

----------------------------------------------------------------------
[log in to unmask] - a forum for informal discussions on molluscs
To leave this list, click on the following web link:
http://listserv.uga.edu/cgi-bin/wa?SUBED1=conch-l&A=1
Type your email address and name in the appropriate box and
click leave the list.
----------------------------------------------------------------------