A New Subspecies of Black Myotis (Bat) from the Eastern Region of Mexico is a research book written by two distinguished authors: Igden Raymond Hall and Ticul Alvarez. In this book, researchers present the discovery of a new subspecies of Myotis, which lives in the eastern part of Mexico. Details of the research, classification of the new subspecies, its features and habitat are described in detail in the book. Thanks to the work of Hall and Alvarez, readers will have the opportunity to learn more about this interesting discovery in the world of natural science.