Rather than a strict line-count, the limit here is that no poem can be more than 50 words -- including the title! (This actually caused me to make one final little revision, as my poem was found to weigh in at 51 words.)
With 316 pages of poetry by 192 poets, this collection of small poems is a big book!
It's funny, the title kept making little ripples of sonic memory in my ear, but it wasn't until I googled it for more info that I was reminded where it comes from: "Prufrock," of course!
Here's a nice excerpt from the back cover: "These poems embody characters from popular culture, history, the Bible, literature, mythology, and their diversity is reflective of the wide range of authors working in this genre. The anthology also contains brief explanatory notes written by the poets to help historicize and contextualize their characters and personae."