(Old drawing) Those are all Leech species I kept in my life.
Hirudo Verbana - A medical leech I bought from a leech farm. I had ca. 100 - 200 of them. I don't keep them anymore.
Hirudinaria Manillensis - a big exotic asia leech, the second biggest leech of the world, grows to 35cm. I still have 6 or 7 of them. The big "mother" and her smaller childs.
Haemopis sanguisuga - got them from a leech breeder friend. small (ca 5cm) flesh and invertebrate eating leech, not a bloodsucker. I fed them with cow meat and earthworms, was really interesting to watch. But I don't have them anymore.
(I don't know the name of the species, It's a new leech) - I have only one of them.
Glossiphoniidae sp. - The white one. I collected some of them years ago. I don't have them anymore. They are cute, but really tiny, they carry their babies under their body.

(the size scale isn't correct)