FIG. 1 is a front view of the first image in the sequence for a transitional image for a portion of a display screen showing our new design;

FIG. 2 is a front view of the second image thereof;

FIG. 3 is a front view of the third image thereof;

FIG. 4 is a front view of the fourth image thereof;

FIG. 5 is a front view of the fifth image thereof;

FIG. 6 is a front view of the sixth image thereof;

FIG. 7 is a front view of the seventh image thereof;

FIG. 8 is a front view of the eighth image thereof;

FIG. 9 is a front view of the ninth image thereof;

FIG. 10 is a front view of the tenth image thereof;

FIG. 11 is a front view of the eleventh image thereof;

FIG. 12 is a front view of the twelfth image thereof;

FIG. 13 is a front view of the first image thereof, on an enlarged scale, the image is shown separately for clarity of illustration;

FIG. 14 is a front view of the second image thereof, on an enlarged scale, the image is shown separately for clarity of illustration;

FIG. 15 is a front view of the third image thereof, on an enlarged scale, the image is shown separately for clarity of illustration;

FIG. 16 is a front view of the fourth image thereof, on an enlarged scale, the image is shown separately for clarity of illustration;

FIG. 17 is a front view of the fifth image thereof, on an enlarged scale, the image is shown separately for clarity of illustration;

FIG. 18 is a front view of the sixth image thereof, on an enlarged scale, the image is shown separately for clarity of illustration;

FIG. 19 is a front view of the seventh image thereof, on an enlarged scale, the image is shown separately for clarity of illustration;

FIG. 20 is a front view of the eighth image thereof, on an enlarged scale, the image is shown separately for clarity of illustration;

FIG. 21 is a front view of the ninth image thereof, on an enlarged scale, the image is shown separately for clarity of illustration;

FIG. 22 is a front view of the tenth image thereof, on an enlarged scale, the image is shown separately for clarity of illustration;

FIG. 23 is a front view of the eleventh image thereof, on an enlarged scale, the image is shown separately for clarity of illustration; and,

FIG. 24 is a front view of the twelfth image thereof, on an enlarged scale, the image is shown separately for clarity of illustration.

The appearance of the transitional image sequentially transitions between the images shown in FIGS. 1-12. The process or period in which one image transitions to another forms no part of the claimed design. The broken line showing of a display screen in FIGS. 1-12 is for illustrative purposes only and forms no part of the claimed design.