SPIRE 250 μm image of the five giant molecular clouds identified through NANTEN CO contours at the edge of the long Galactic bar in the fourth quadrant (top) and their heliocentric distance as a function of the Galactic longitude (bottom). The black lines show the CO contours at 3σ, 4σ and 5σ, with σ = 3.2 K. Prestellar clumps belonging to the cloud are plotted in red triangles, while the protostellar objects are shown in blue circles. In the top right hand side the SPIRE beam (white circle) and the NANTEN beam (orange circle) are also shown.