Sorry, I've had the caecilians for years, there's no way the supplier would still have them, otherwise I would have bought them up by now.
I've never attempted to breed the Dermophis mexicanus as when I first received them, they were of disparate sizes, and later, I realized some had certain conditions while others didn't. I didn't want to mix them on the chance of introducing diseases to otherwise healthy individuals.
As for the Ichthyophis sp., I simply don't have the appropriate set up to attempt to breed them. From what I've read, you need to set up a riparian habitat with the appropriate sediments, and you have to play with precipitation.