LES PHYLLOPODES CONCHOSTRACÉS 
351 
Length of carapace, about 5 Unes ; breadth at umbo, 
3 lines. 
Hab. —Brackish lake, Green Point, Cape of Good Hope 
(I. Macgillivray) (Mus. Brit.). 
Leptestheria Rubidgei Baird. 
(Fig. 104, a-c.) 
Esiheria Rubidgei Baird W., 12, p. 148, 392. Taf. 15^ fig. 3, 
a-h. 
Carapace-valves ovate. Dorsal margin long, straigth. 
Umbones small, placed near the anterior extremity. Ventral 
margin sligtly rounded. 
Anterior extremity 
rounded. Posterior ex¬ 
tremity emarginate at 
upper part, giving it so- 
mewhat the appearance 
Fig. 104. 
Leptestheria Rubidgei (Baird). 
a, conchæ a latere. 
of the Shell of an Avicu- b, c, partes valvùlæ concharum. Sec. D. TF. Baird. 
la. Anterior extremity 
rather the larger. Ribs of carapace not numerous, and wide 
apart, the surface in the interspaces marked with coarse 
and flexuously disposed raised lines. 
This species partakes of the characters of straight-dorsal- 
margined species, E. dahalacensis and E. M.acgillwrayi. 
From the last species it differs in size, from of posterior 
extremity, and markings of interspaces betwen the ribs, as 
well as their comparative size and number, those of the 
présent species being fewer and wider apart. 
Length of carapace about 3 1/4 lines; breadth at umbo, 
2 lines. 
Hab. —A dried-up “vley'' near Port Elizabeth, CapeColony. 
Collected by Dr. Rubidge^ and communicated to Henry Wood- 
ward Esq. by W. S. M. D'Urban, Esq. (Mus. Brit.). 
M. G. O. Sars rapportait déjà ces deux espèces au genre 
