In the Internet HSN I have published a number of articles on Triphoridae
of Taiwan by Chen-Kwoh Chang originally from Taiwan, now in San Jose,
California. In the future 3 months there will be a series on other
micro shells as Turrids and Rissoids. There are definitely collectors
there.
CONCH-Ler Chan Sow-Yan from Singapore can give more information on the
subject. Try [log in to unmask]
Aloha,
Wes