If you have to deal with large numbers of latin names (i.e. more than just what you have in your own collection) then I find it pays to learn some of the root words. Often you will find that if you know what the individual components mean then it is just like reading.
C.nigrimanus = black hands
C.gracilis = slender
C.bicolor = you take a guess at this one.
Anything with maculata/maculosus/macul...whatever is going to have spots. Anyhow, you get the idea.