Snowthrower housing incorporating bypass and auger for use with same

A snowthrower housing comprising:

• an auger housing comprising a front portion and a rear portion, wherein the front portion comprises two spaced-apart sidewalls connected to one another by a rear wall to define a front- facing collection opening, wherein the rear portion protrudes from the rear wall of the front portion and defines a rear-facing opening;
• an impeller housing coupled to the auger housing at the rear-facing opening of the rear portion, wherein the impeller housing defines a discharge outlet, and wherein at least a portion of the rear portion of the auger housing and the impeller housing form a bypass passage adapted to return snow that bypasses the discharge outlet to the auger housing, wherein a top surface of the impeller housing and a top surface of the rear portion of the auger housing form a top surface of the bypass passage, wherein the top surface of the bypass passage intersects the rear wall of the front portion of the auger housing;
• an auger positioned within the auger housing between the collection opening and the rear wall, the auger adapted to rotate in a first direction, relative to the auger housing, about an auger axis, wherein the auger is adapted to collect snow;
• and
• an impeller positioned within the impeller housing and adapted to receive snow transported by the auger and to eject the snow outwardly through the discharge outlet.