mail on sunday crossword

[tilly75]

Hi can anyone help with these:
19 across, relating to summer, 7 letters, _s_i_a_
16 down, a bone of the carpus opposite the large bone of the forearm, six letters, u_n_r_?

[pbeach]

19a Estival

[mrs_overall]

19A Estival

16d Ulnare

[craft1948]

16 ulnare

[pbeach]

ulnare?

[craft1948]

Ul`na�re
n. 1. (Anat.) One of the bones or cartilages of the carpus, which articulates with the ulna and corresponds to the cuneiform in man.

[misssippy]

Estival
http://www.whatsthisword.com/whatis/-s-i-a-.as px

Ulnare
http://www.whatsthisword.com/whatis/u-n-r-.asp x