""Characters Of Undescribed Diptera In The Collection Of W. W. Saunders"" is a book written by Francis Walker and published in 1857. The book is a collection of descriptions of various species of Diptera (two-winged flies) that were previously unknown to science and were found in the collection of W. W. Saunders. The book contains detailed descriptions of the physical characteristics, habits, and habitats of each species, as well as illustrations to aid in identification. The book is a valuable resource for entomologists, biologists, and anyone interested in the study of insects. Francis Walker was a renowned British entomologist who made significant contributions to the study of insects, particularly in the field of Diptera.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.