The Bonomi BS.19 Alca (English: Auk) was a single seat, tractor configuration motor glider, designed and built in Italy shortly before World War II.
[1] The BS.19 Alca of 1936 was closer to a high aspect ratio light aircraft, with no provision of a foldaway propeller.
The Alca had a conventional glider type, rubber sprung landing skid plus tail bumper but it also had an unusual wheeled undercarriage for take-off.
This featured a wheel on each side mounted on a half axle attached to the lower fuselage longeron and a vertical shock absorbing leg to the wing.
[2] Data on the Alca's performance under power have survived, but not on its gliding characteristics beyond a comment that they were excellent, as was the handling.