An impeller shroud support (40, 110) for disposition around an impeller, the impeller shroud support comprising: a shroud body (42, 42"); a support arm (44, 44"), joined to and extending around the shroud body; and a plurality of Mid-Impeller Bleed flow passages (54, 54') each comprising: an inlet (96, 96') formed in the shroud body and configured to receive bleed air extracted from the impeller; an outlet (100, 100') fluidly coupled to the inlet and through which the bleed air is discharged; wherein the support arm (44, 44') comprises a generally cylindrical arm section (86,86') joined to the shroud body (42, 42') at an arm-body interface (91, 91'); wherein the outlets (100, 100') of the plurality of MIB flow passages (54, 54') are formed in the generally cylindrical arm section (86, 86') at a location axially adjacent the arm-body interface (91, 91'); wherein the generally cylindrical arm section (86, 86') extends from the arm-body interface (91, 91') in an essentially forward direction, wherein the support arm (44, 44') further comprises a conical arm section (88, 88') joined to the generally cylindrical arm section opposite the shroud body (42, 42'), and characterized in that the conical arm section extends from the generally cylindrical arm section in radially outward and aftward directions; wherein the cylindrical arm section (86, 86") and the conical arm section (88, 88') cooperate to form an angle θ SA at a juncture wherein angle θ SA is acute. a shroud body (42, 42"); a support arm (44, 44"), joined to and extending around the shroud body; and a plurality of Mid-Impeller Bleed flow passages (54, 54') each comprising: an inlet (96, 96') formed in the shroud body and configured to receive bleed air extracted from the impeller; an outlet (100, 100') fluidly coupled to the inlet and through which the bleed air is discharged; wherein the support arm (44, 44') comprises a generally cylindrical arm section (86,86') joined to the shroud body (42, 42') at an arm-body interface (91, 91'); wherein the outlets (100, 100') of the plurality of MIB flow passages (54, 54') are formed in the generally cylindrical arm section (86, 86') at a location axially adjacent the arm-body interface (91, 91'); wherein the generally cylindrical arm section (86, 86') extends from the arm-body interface (91, 91') in an essentially forward direction, wherein the support arm (44, 44') further comprises a conical arm section (88, 88') joined to the generally cylindrical arm section opposite the shroud body (42, 42'), and characterized in that the conical arm section extends from the generally cylindrical arm section in radially outward and aftward directions; wherein the cylindrical arm section (86, 86") and the conical arm section (88, 88') cooperate to form an angle θ SA at a juncture wherein angle θ SA is acute. an inlet (96, 96') formed in the shroud body and configured to receive bleed air extracted from the impeller; an outlet (100, 100') fluidly coupled to the inlet and through which the bleed air is discharged; wherein the support arm (44, 44') comprises a generally cylindrical arm section (86,86') joined to the shroud body (42, 42') at an arm-body interface (91, 91'); wherein the outlets (100, 100') of the plurality of MIB flow passages (54, 54') are formed in the generally cylindrical arm section (86, 86') at a location axially adjacent the arm-body interface (91, 91'); wherein the generally cylindrical arm section (86, 86') extends from the arm-body interface (91, 91') in an essentially forward direction, wherein the support arm (44, 44') further comprises a conical arm section (88, 88') joined to the generally cylindrical arm section opposite the shroud body (42, 42'), and characterized in that the conical arm section extends from the generally cylindrical arm section in radially outward and aftward directions; wherein the cylindrical arm section (86, 86") and the conical arm section (88, 88') cooperate to form an angle θ SA at a juncture wherein angle θ SA is acute.