==Missing wing types?== 
 I'd add the Rogallo wing, that is some kind of a delta wing, but soft; as example of Circular wing, the American Nemuth Parasol, as a semicircular wing, the Arup flying wings; as an unclassifiable or inverted Delta, the straight part as leading edge (I'd like having specific professional comments about the advantages and disadvantages and performance of the inverted delta), the 1934 design of Raoul J. Hoffman (Popular Aviation, March 1935, pp 163 and 196), and also one of the Fauvel flying wings, the AV-10; in YouTube, connected to the Arup airplanes films, some other low aspect ratio inverted-delta like wings appear. There was another example of circular wing, similar to the Coleoptere but of an ordinary width proposed in a hobbyists' magazine to be built as toy, but I'm not currently able to retrieve the image and plans. The Burnelli lifting fuselages can be considered another type of wing?