If you look at the documentation page for open_cursor, the tables listing the cursor URI types all appear twice. It looks like it has to do with the recent Java changes. ddanderson can you take a look? You can see it here:
http://source.wiredtiger.com/2.4.0/struct_w_t___s_e_s_s_i_o_n.html#afb5b4a69c2c5cafe411b2b04fdc1c75d