Go to http://www.eroscomix.com (or phone 1-800-657-1100 weekdays from 9am to 8pm Pacific time) and ask them to send you their MangErotica catalog.

All of the comics are in English, there are nearly 400 of them, there's a capsule description of each, a photo of the cover (in black&white), and a story code for each. For example, Princess of Darkness #3 says "First, Maki encounters a demented man and his dog, then gets held hostage by a horny terrorist gang!" BARELYLEGAL, B/D, BESTIALITY, GANGBANG. There are also two pages of sample interior artwork from each series (not each book).