well its been awhile since I posted this question and got some replies.
Here are a few pics of them grown up, The white spot at the base of the supra shield has faded away on 3 out of 6 of them but still is visible on the other 3.
I have recieved 2 batches of eggs from this group so far. Each batch was between 5 and 7 eggs The eggs are about 1/2 the size of Aeneus and really hard, most of the eggs ended up dropping into the substrate after 24 hours. None of the eggs where placed on the glass all where in the bottom side of the Java Fern.
I have moved them to a seperate tank by themselves with a very thin layer of sand. They have calmed down, way down and I know can get some pictures.
Hope these pics help some.
LOL! I am one of the folks who also just got some of these corys, mine were labeled at the store as" Corydoras sp. San Juan". Here is a photo of some of mine, they are so fast and busy all the time they are hard to photograph. These all have a triangular white patch at the base of the head by the dorsal fin. I also have C. napoensis babies of about the same size, they lack the white patch.