We've had a number of posts about the pronunciation of Latin, including the Classical vs. Late (Church) Latin pronunciations.

But there is a third pronunciation used in English-speaking countries, which is to pronounce Latin using the same rules as you would use for English. This is nearly always used for the Latin names of flora and fauna. Hence ficus becomes 'fie-cuss' and regis becomes 'ree-jus'. In like manner, Ursa Major is pronounced 'er-sa may-jer', not 'oorsa my-yore'; Vivat Regina! is 'vie-vat re-jie-na', etc.

I have heard that this was the way Latin was pronounced at Oxford and Cambridge for a couple centuries, but don't know if that is true or if it's still the mode. Sure hope not.