Wt 
IN THE REGENCY OF TUNIS. 19 
I made my exeursion amongst the Beni-Zid on the 27th and 28th 
of April. On the 1st of May I again visited the mountain, but was 
obliged to return sooner than I intended, having missed the donkey 
which carried my paper and provisions. Nevertheless I hit upon a 
most curious locality, in which to my great surprise I found numerous 
species of the lower mountains of the Mediterranean basin: Sideritis 
Romana, Campanula Erinus, Anthyllis tetraphylla, Psoralea bituminosa, 
etc. etc. These plants do not reach the plain of Gabés; they are 
found in a large Wadi, which I explored more in detail on the 4th and 
the 18th of May. This Wadi presented a most singular mixture of 
Provengal and African species. On the 4th I followed up the Wadi to 
the highest point of the Djebel Keroua, which is called Zembla la Duaria. 
This point gave a Helichrysum quite unknown to me, very different 
from any of the Mediterranean species, a Periploca, a Sonchus, and the 
Lacellia Libyca, Viv. Viviani compares the habitus of this species to 
Centaurea Cyanus, whereas it resembles much more Amberboa Lippii. 
On the 14th of May I found the Zace/Iia in the plain which extends from 
the Djebel Aziza in the north to the mountains of Matmata in the south. 
The plant of the mountain, though identical with that of the plain, is 
smaller. I next found a Scabiosa which Balansa has already collected, 
Origanum Creticum ?, two new localities for Gymnarrhena, a Brassica 
siliquis pendulinis, an Erythrea on the very summit of the mountain 
amongst blocks of stone, two Hippocrepides which I have never found 
in the plain, one of them probably merely H. multisiliquosa, two An- 
tirrhinums, a single little specimen of a Specularia, and a single speci- 
men of Callipeltis cucullaria, of which I likewise found only a single 
specimen in the Wadi at the foot of the Djebel Aziza; an Hrodium, like 
glaucophyllum, but perfectly distinct in its calyx and fruit; an immense 
quantity of a little slender Linaria with a tortuous stem ; an Umbilicus, 5 
etc. etc. This excursion gave me, too, the only Capsella Bursa-pastoris 
I have yet seen. : 
On the 12th I made another excursion, accompanied this time by - 
Mr. Mattei, amongst some other douars of the Beni-Zid; encamped 
about twelve leagues to the south-west of Gabès, in a vast plain six or - 
seven leagues square, bounded on the north by the Djebel Aziza, on — 
the west by the Djebel Meláb, which is not marked on Mr. Pelissier’s : 
map, and on the south by the mountains of Matmata. I passed here 
the 13th and 14th of May. My visit to the Djebel Aziza, which took - 
