Three new specimens I was hunting for

Found them online, and I'm super happy that they're now mine.

Group pic on top, and the bottom row from left to right are a really cute Mammillaria perezdelarosae, a Turbinicarpus pseudopectinatus I decided to grow in water after my previous one suddenly and unexpectedly died on me for no discernible reason, and a Pseudolithos migiurtinus that looks like it came from space and I love it :)