In the summer of 1923, I collected about forty apterous specimens of this little species from Bryant’s Bog, Cheyboygan County, Michigan and in 1924 described it as new. In 1928 at the British Museum, I found in the type series of Mesovelia amoena Uhler some apteous female specimens that I thought must be the same as my M. douglasensis. Uhler described only the winged form from the Island of Grenada and did not mention the apterous specimens that were collected with it. The color of the two forms is decidedly different. In 1930, Jaczewski also noticed the similarity of the wingless M. amoena Uhler and M. douglasensis Hungerford but could not decide the matter because he had no males of M. amoena Uhler for dissection. Every summer since 1923 I have sought winged specimens of M. douglasensis Hungerford from Bryant’s Bog and not until 1951 were any such specimens taken. In 1951, Dr. Wayne Porter caught two winged females in Nichol’s Bog but both specimens had broken off the hemelytral membranes. On July 12, 1952, Irwin Siesnick, one of my students, brought me a winged male from Bryant’s Bog and this renewed an intensive search at that place for more winged specimens with the result that on July 23 two winged females were captured and none thereafter. During the summer, Irwin Slesnick, Paul Spangler and I collected more than one hundred wingless specimens of this species in Bryant’s Bog and could have taken many more. I now have compared the winged M. douglasensis from the type locality with winged specimens from Florida and am convinced they are the same species. Moreover, all those shown in the chart opposite, where males are available, have the claspers like the type series from Michigan. Since both the winged and apterous females resemble M. amonea Uhler, it is desirable to secure and examine males from Grenada or nearby islands to settle the question. . There is a South American species that superfically looks somewhat like M. douglasensis but is structurally different. Unfortunately, all I can say at present, is that the distribution of M. douglasensis extends from Michigan to Florida and that winged forms are more common in the South.