At risk of going off-topic (I don't know how it's looked upon here but some forums are very strict...):

1. 'Amblylypygid' is certainly a typo; the word is amblypygid
2. Amblypygids are not spiders, but belong to a different order -
3. - Amblypygi, which isn't a genus. The genus of the animal shown is Damon. There are around a couple of dozen genera in all.

Some south american spcies can reach in excess of two feet across the 'whips'.

The article is interesting, incidentally. It's a strange thing to lose in Brighton (not many people keep them, and they're generally both quite expensive and not easy to get hold of).