On the large semicircular walls beneath the northern and southern dome-arches are a number of figures in mosaic. The seven arched recesses were filled with representations of martyrs and bishops; above, between the windows, were six smaller figures of prophets, and a larger figure at each end. At the height of the upper row of windows were probably the archangels, but of these only the feet remain. The figures that now exist are the following. In the recesses on the south side, the second from the east is Anthimos, Bishop of Nicomedia, martyred in 311: in the third is Basil, Bishop of Caesarea, martyred in 379.[384] The fourth recess from the east has Gregory Theologos, Patriarch of Constantinople from 378 to 383. The next figure is Dionysius the Areopagite; who was converted by St. Paul, and became, tradition says, Bishop of Athens. In the sixth recess is Nicholas, Bishop of Myra, who died in 330. This figure is partly destroyed. The seventh, is Gregory, Bishop of Armenia, who died in 325.[385] The figure of Isaiah, which is to the east of the row of windows, had been covered up (when Salzenberg made his drawings), but it was described by Fossati as having an undergarment of green with silver lights, and over it a cloak of a white woollen stuff. The right hand pointed towards the bema, and in the left was an open scroll with the inscription, “Behold, a Virgin shall conceive and bear a son.” Under the figure was a monogram.[386] Higher up again on the same wall was the inscription:-- ΑΙΓ....ΤΗϹΑΘΑΝΑΤΟΥ ϹΟΦΙΑϹ ΗΡΑ....ΤΟΥΚΕΑΚΗΡΑΤΩΝ.... The recesses of the north wall have no mosaics [see below, p. 287.] At the height of the windows, the first figure beginning from the east is Jeremiah.[387] The undergarment has stripes of blue and red, and the upper represents a russet-coloured woollen stuff. The right hand blesses, the left has an open roll [with the inscription shown in the plate, “This is our God; no other shall be compared to Him.”].[388] The figure between the first and second window is probably Jonas, as ΑϹ still remains on the right side of the head, and there is only room for three letters on the other side. The undergarment is a greenish blue with silver lights, and has broad red stripes. The nimbus is blue. Over the head of this figure is found the remnant of an inscription ΝΤΙΔΟϹ. This may have belonged to one of the figures above, of which a sandaled foot and edge of a garment alone remain. The foot does not stand upon green earth, like the prophets below, and therefore probably belonged to an angel. Only a part remains of the third prophet from the east, which was inscribed Habakkuk.[389]