"A New Bat (Genus Myotis) From Mexico" by Walter W. Dalquest and E. Raymond Hall is a scientific publication written in the mid-20th century. This document focuses on the details surrounding the discovery and classification of a new bat species, "Myotis argentatus", found in Mexico. The book outlines the circumstances of the discovery, which took place near the Rio Coatzacoalcos when Dalquest managed to collect two bat specimens from a decayed tree trunk. It details the distinctive physical characteristics of the newly identified species compared to other bats within the genus "Myotis", particularly noting variations in skull structure, body size, and fur coloration. The text provides a thorough comparison with another known species, "Myotis albescens", discussing specific measurements and morphology that set them apart. Overall, this work contributes to the understanding of bat diversity in Mexico and offers foundational taxonomic information for future research in chiropterology. (This is an automatically generated summary.)